The role of mycorrhizal fungi in growth enhancement of dune plants following burial in sand
|
|
- Marcia Kennedy
- 5 years ago
- Views:
Transcription
1 Functional Ecology 1999 ORIGINAL ARTICLE OA 000 EN The role of mycorrhizal fungi in growth enhancement of dune plants following burial in sand J. V. PERUMAL* and M. A. MAUN Department of Plant Sciences, University of Western Ontario, London, Ontario, Canada N6A 5B7 Summary 1. Burial in sand of Agropyron psammophilum and Panicum virgatum plants had a stimulating effect on carbon dioxide exchange rate, leaf area and biomass, irrespective of whether sand used for burial did or did not contain mycorrhizal fungi. 2. Plants of both A. psammophilum and P. virgatum species grown in mycorrhiza-containing sand and then buried with mycorrhiza-containing sand had the highest CO 2 exchange rate, leaf area and biomass. 3. The growth stimulation following a burial episode is probably a composite response of several factors. The major contribution of mycorrhizal fungi will possibly be the exploitation of resources in the burial deposit. Key-words: Agropyron psammophilum, arbuscular mycorrhizal fungi, burial in sand, foredunes, net CO 2 uptake, Panicum virgatum, sand dunes Functional Ecology (1999) Ecological Society Introduction Read (1989) showed that plant communities in successional sand-dune chronosequences are governed by an interaction between biotic and physico chemical components of the sandy matrix. Not only does the composition of plant species change with the seasons (Nicolson 1960) and the age of the dune systems (Koske & Gemma 1997) but also the soil microorganismal association changes with succession probably because of an increase in organic matter content, improved substrate stability and nutrient enrichment (Read 1989). In the foredune plant communities, the driftline vegetation consists of annuals that may not have a mycorrhizal association and depend primarily on detritis cast on the shoreline for their nutritional needs. However, the pioneer dune-forming species, such as Ammophila breviligulata Fern., benefit from colonization by arbuscular mycorrhizal (AM) fungi (Koske & Polson 1984). In this habitat, the major recurrent event affecting plant and microbial communities is sand deposition that may bury plants to variable depths (Maun 1996). Plant species growing in the foredunes are well adapted to stress imposed by burial. In fact, there is clear evidence that all foredune species exhibit enhanced growth following episodes of burial (Maun 1998). According to Eldred & Maun (1982), some plants have become so specialized that they require regular burial to maintain high vigour. Several explanations have emerged over the years to explain this *Present address: Southern Adventist University, PO Box 370, Collegedale, TN 37315, USA. phenomenon but little experimental evidence is available for any of the theories (Maun 1998). Possibly, the growth enhancement may be caused by their association with AM fungi. In this study, we tested the hypothesis that the enhanced performance of dune plants following burial in sand is owing to the beneficial effects of mycorrhizal fungi. We examined the effects of AM fungi inoculation on the growth and vigour of two dune grasses, Agropyron psammophilum Gillett & Senn and Panicum virgatum L., under burial and control conditions in a greenhouse. Materials and methods BURIAL EXPERIMENTS A greenhouse experiment was conducted in winter 1993 to determine the effects of mycorrhizal fungi and burial in sand on the net CO 2 uptake, leaf area and biomass of two common sand dune grasses, A. psammophilum and P. virgatum. The same experiment was repeated in summer 1996 with some modifications of methods as outlined below. The mycorrhiza inoculum was produced by using sweet-corn (Zea mays L.). In 1993 and 1996 surface-sterilized seeds were germinated in an incubator (30 C, 14 h light and 10 h dark) and the seedlings were planted in sand collected directly from the rhizosphere of P. virgatum and A. psammophilum plants growing naturally on the sand dunes of Port Burwell Provincial Park. In the 1993 experiment when corn plants were 3 weeks old a sample of roots was harvested and assessed for AM-fungi colonization. This procedure confirmed the presence 560
2 561 Growth stimulation by burial: role of mycorrhiza of AM fungi in the roots of corn plants. In the 1996 burial experiment, corn plants were 8 weeks old when they were harvested, confirmed for the presence of AM fungi and then used to inoculate the two test species. All corn plants in both experiments were then harvested, their roots were washed and then cut into ca. 1 cm fragments. These fragments were used for the inoculation of plants. The procedures for planting, inoculation and burial of plants for both experiments were as follows. Surface-sterilized seeds of A. psammophilum and P. virgatum, were germinated in an incubator and seedlings planted in 8 cm long and 5 cm diameter PVC tubes (Fig. 1a) filled with sand which had been sterilized at 1 mega rad of gamma radiation (Thompson 1990) prior to placing in the tubes. The tubes were fitted with a cm coupling on one side (Fig. 1d) and a Teflon net at the base for drainage (Fig. 1). For the 1993 and 1996 experiments, the seedlings of A. psammophilum and P. virgatum were planted in PVC tubes and inoculated with AM fungi in late September 1993 and May 1996, respectively. Before planting the seedlings in the PVC tubes, 5 g of corn root fragments were placed 1 cm below the roots of seedlings to serve as inoculum. During both years the roots of corn plants grown in sand collected from the rhizosphere of A. psammophilum were placed below A. psammophilum seedlings while corn roots grown in sand from the rhizosphere of P. virgatum were placed below the seedlings of P. virgatum. The tubes containing these inocula are referred to as mycorrhiza-containing sand (+) and those with mycorrhiza-free sand were called ( ). The seedlings were then placed on benches in a greenhouse. In the 1993 experiment, the greenhouse was maintained at 24 C day (14 h, with a light intensity of ca. 350 µe) and 20 C night (10 h). In the summer 1996 experiment the temperatures during the day ranged from 25 to 30 C (14 16 h with a light intensity of µe) and 20 C at night (10 8 h). Four weeks after planting in PVC tubes, the seedlings in both experiments, were given the following six burial treatments. Seedlings were grown in: (1) control, AM-containing sand (+), no burial; (2) control, AM-free sand ( ), no burial; (3) AM-containing sand and then buried with AM-containing sand (+ +); (4) AM-containing sand, buried with AM-free sand (+ ); (5) AM-free sand, buried with AM-free sand ( ); (6) AM-free sand, buried with AM-containing sand ( +). The first two treatments served as controls. To prevent the movement of AM fungi between the mycorrhiza-containing (+) and the mycorrhiza-free ( ) sand layers in treatments (4) (+ ) and (6) ( +), a 0 45 µm pore size millipore filter of 4 7 cm diameter with a hole in the centre for the stem was placed at the rim of the coupling (Fig. 1b) and sealed. The 0 45 µm pores prevented the penetration of AM fungal hyphae (Li, George & Marschner 1991). After the fitting of filters the plants were buried to 50% of their height by fitting a 3 8 cm diameter PVC tube (Fig. 1e) on the coupling. A completely assembled unit with a buried plant is shown in Fig. 1c. Eight replicates were used in the 1993 and four in the 1996 experiment. CARBON DIOXIDE EXCHANGE RATE In 1993, carbon dioxide exchange rates (CER) were measured using a LI-COR Portable Photosynthesis Gas Analyzer LI-6200 (Li-Cor Inc., Lincoln, NE, USA). The CER measurements were taken three times; 14, 20 and 26 days after the imposition of burial treatments. In all instances the second fully expanded leaf was used for this measurement and three readings were taken on each leaf. To minimize the variations in light intensity, measurements were taken between and h on sunny days. The same procedure was used in 1996 and one CER measurement was recorded 6 weeks after the imposition of burial treatments. LEAF AREA AND TOTAL PLANT BIOMASS Fig. 1. Assembly of PVC tubes and coupling used to determine the effect of mycorrhizal fungi on buried plants. (a) an unburied plant of Agropyron psammophilum growing in a PVC tube with coupling (d); (b) PVC tube, coupling (d) with 0 45 µmillipore filter and extension PVC tube (e); (c) a completely assembled unit with a buried plant. The experiments were terminated 5 and 11 weeks after the imposition of burial treatments in 1993 and 1996, respectively. At harvest, the leaves of each plant were carefully removed from the plants, their leaf areas were recorded using the LI-3000 portable leaf area meter (Li-Cor Inc., Lincoln, NE, USA), and then placed in a labelled paper bag. The stems above sand, buried portions of stems and roots of four replicates of each species were carefully excavated from the PVC tubes, washed with water to remove any sand adhering to their roots and then placed in paper bags containing the leaves of the same plants. The same procedure was used to harvest the remaining four replicates; however, the buried portions and roots of plants were used to assess AM colonization. In 1996, the root samples from each replicate were examined for AM colonization. All
3 562 J. V. Perumal & M. A. Maun harvested plant materials were then dried in an oven at 70 C for 48 h and weighed. ASSESSMENT OF AM COLONIZATION OF ROOTS In both experiments, the roots of plants were examined for mycorrhizal root colonization. In the buried treatments (+ ) and ( +) where both the mycorrhizafree and mycorrhiza-containing sand was used for burial, care was taken to keep plant parts above and below the burial surface separated to avoid contamination. The assessment for mycorrhizal colonization of roots was carried out by thoroughly washing them with deionized water and then soaking them for h in FAA (formyl acetic alcohol containing 1050 ml water, 1500 ml 95% ethanol, 150 ml glacial acetic acid and 300 ml 37 40% formalin). The roots were taken out of FAA, cut into 1 cm long pieces and then dispersed in a 2 litre beaker full of water. The water was stirred vigorously and a subsample of 100 ml was collected using a beaker (Brundrett, Piche & Peterson 1984). These subsamples were then cleared by immersing them in 10% potassium hydroxide and placing them in an autoclave at 121 C for 7 12 min (depending on the texture of roots). The roots were then rinsed in deionized water and submerged in Chlorazol Black-E stain and heated in an oven set at C for 45 min to 3 h (Brundrett et al. 1984). The stained roots were then rinsed thoroughly in deionized water, mounted on slides and examined under a compound microscope for the assessment of root colonization using the magnified intersections method (McGonigle et al. 1990). STATISTICAL ANALYSIS A one-way analysis of variance (ANOVA) was performed on the data for carbon dioxide exchange rate (CER), leaf area and biomass to determine differences between the six treatments in both experiments. If the ANOVA produced significant F-values, Tukey s multiple comparison test was applied to find differences between treatment means. Results CARBON DIOXIDE EXCHANGE RATE Fig. 2. Mean (± 1 SE) carbon dioxide exchange rate (CER) of A. psammophilium and Panicum virgatum plants buried or unburied with sterilized sand without AM fungi or sterilized sand containing AM fungi. For this experiment sterilized sand was used for all treatments. Plants were grown in: ; control, AM-containing sand, no burial later (+); ; control, AM-free sand, no burial later ( ); ; AM-containing sand, buried later with AM-containing sand (+ +); ; AMcontaining sand buried later with AM-free sand (+ ); ; AM-free sand, buried later with AM-free sand ( ); ; AMfree sand, buried later with AM-containing sand ( +). In 1993, there were no significant differences in CERs between control plants of both species growing in sterile mycorrhiza-containing sand (+) and those growing in sterile sand with no mycorrhizal ( ) fungi (Fig. 2). Burial in sand had a stimulating effect on CER irrespective of whether sand used for burial did or did not contain mycorrhizal fungi and became evident after 14 days of burial. In general, burial of plants with sand containing mycorrhizal fungi was beneficial but the results were not always clear cut. The (+ +) treatment in both species had the highest CER reading. There was a significant (P < 0 001) increase in the final (26 days after burial) CER readings between both unburied controls, (+) and ( ), and the buried plants of both species except that the ( +) treatment in A. psammophilum was not significantly different from control (+). After 26 days of burial, the (+ +) treatment of A. psammophilum plants had significantly higher CER than the (+ ) treatment. The other burial treatments did not differ. In P. virgatum there were no significant differences in CER readings among all four burial treatments after 26 days of burial in sand (Fig. 2). In 1996, the control plants of both species grown in mycorrhiza-containing sand (+) showed significantly higher CER (Table 1) than control plants grown in
4 563 Growth stimulation by burial: role of mycorrhiza Table 1. Mean (± 1 SE) for carbon dioxide exchange rate (µ mol m 2 s 1 ) of Agropyron psammophilum and Panicum virgatum recorded 6 weeks after burial in August For this experiment sterilized sand was used for all treatments. Control (MCS), AM-containing sand (+), no burial; control (MFS), AM-free sand ( ), no burial; MCS/MCS, AM-containing sand, buried with AM-containing sand (+ +); MCS/MFS, AM-containing sand, buried with AM-free sand (+ ); MFS/MFS, AM-free sand, buried with AM-free sand ( ); MFS/MCS, AM-free sand, buried with AM-containing sand ( +). Means in the same column followed by the same letters are not significantly different at P < 0 05 according to Tukey s test In the 1993 experiment, for both species there was no significant difference in biomass per plant between control plants grown in AM-free sand ( ) and control plants grown in AM-containing sand (+) (Fig. 3). The A. psammophilum plants grown in mycorrhizae-containing sand and then buried with AM-containing (+ +) or AM-free sand (+ ) produced significantly higher biomass than both controls, ( ) and (+) (Fig. 3). In P. virgatum there was a significant difference between the unburied controls, (+) and ( ), and the burial treatments, (+ +), (+ ) and ( ), but there was no significant difference between AM-fungi containing control (+) and ( +) burial treatment (Fig. 3). In the 1996 experiment, control plants of A. psammophilum grown in AM-containing sand (+) produced significantly greater biomass than control plants grown in AM-free sand ( ) but not in P. virgatum (Fig. 3). The A. psammophilum plants grown in AMcontaining sand and then buried in AM-containing (+ +) or AM-free sand (+ ) produced significantly higher biomass than all other treatments. There was also a significant increase in biomass of plants grown in AM-free sand and then buried in AM-free ( ) or AM-containing sand ( +) as compared to control ( ), however, their total biomass was not significantly higher than mycorrhiza-containing (+) control (Fig. 3). In P. virgatum, there was a significant increase in total biomass in all burial treatments as compared to both controls, (+) and ( ). Agropyron psammophilum Panicum virgatum LEAF AREA MCS (+) ± 2 54 a ± 1 14 a MFS ( ) ± 1 00 b ± 0 77 b MCS/MCS (+ +) ± 4 04 c ± 1 47 c MCS/MFS (+ ) ± 3 09 c ± 1 11 c MFS/MFS ( ) ± 1 03 d ± 1 45 b MFS/MCS ( +) ± 1 58 d ± 2 00 b sterile sand without AM fungi ( ). Burial of A. psammophilum plants in sand, irrespective of whether sand used for burial did or did not contain AM fungi, significantly increased CER values (Table 1) over controls grown in mycorrhiza-free sand ( ) but not in mycorrhiza-containing sand (+). However, plants grown in AM-containing sand and then buried with AM-containing (+ +) or AM-free sand (+ ), had significantly higher CER values than those grown in AM-free sand and then buried in AM-free ( ) or AM-containing sand ( +). Results for P. virgatum were identical except that plants grown in AM-free sand and then buried with AM-free sand ( ) or AM-containing sand ( +) were significantly lower (Table 1) than AM-containing control (+) but not different from AMfree control ( ). In 1993 there was no significant difference between the leaf area of the mycorrhizal (+) and non-mycorrhizal ( ) controls of A. psammophilum. However, there was a significant difference between P. virgatum plants growing in AM-free ( ) or AM-containing (+) sand (Table 2). Burial in sand stimulated the growth of leaves of both plant species as shown by a significant increase in leaf area (Table 2). In A. psammophilum a significant difference was also seen between plants grown in AM-containing sand and then buried with AM-containing (+ +) or AM-free TOTAL BIOMASS Fig. 3. Mean (± 1 SE) for total dry biomass (g) per plant of A. psammophilum and P. virgatum recorded 5 weeks after burial in 1993 and 11 weeks after burial in For this experiment sterilized sand was used for all treatments. Plants were grown in: (+) control, AM-containing sand, no burial later; ( ) control, AM-free sand, no burial later; (+ +) AM-containing sand, buried later with AM-containing sand; (+ ) AM-containing sand buried later with AM-free sand; ( ) AM-free sand, buried later with AM-free sand; ( +) AM-free sand, buried later with AM-containing sand. Bars within each species and each year with different superscript letters are significantly (P < 0 05) different according to Tukey s test.
5 564 J. V. Perumal & M. A. Maun Table 2. Mean (± 1 SE) for leaf area (cm 2 ) of A. psammophilum and P. virgatum recorded 11 weeks after burial. For this experiment sterilized sand was used for all treatments. Control (MCS), AM-containing sand, no burial (+); control (MFS), AM-free sand, no burial ( ); MCS/MCS, AM-containing sand, buried with AM-containing sand (+ +); MCS/MFS, AM-containing sand, buried with AM-free sand (+ ); MFS/MFS, AM-free sand, buried with AM-free sand ( ); MFS/MCS, AM-free sand, buried with AM-containing sand ( +). Means in each column followed by the same letters are not significantly different at P < 0 05 according to Tukey s test Treatments A. psammophilum P. virgatum A. psammophilum P. virgatum MCS (+) 7 69 ± 0 48 a 5 77 ± 0 14 b 7 90 ± 1 55 a 7 66 ± 1 15 a MFS ( ) 6 53 ± 0 53 a 3 75 ± 0 17 a 7 45 ± 1 73 a 6 76 ± 0 77 a MCS/MCS (+ +) ± 0 75 c 7 56 ± 0 21 c ± 4 50 c ± 2 30 c MCS/MFS (+ ) ± 0 64 c 7 14 ± 0 55 c ± 1 96 c ± 3 25 c MFS/MFS ( ) ± 0 70 b 3 88 ± 0 16 a ± 3 45 b 7 94 ± 1 19 a MFS/MCS ( +) ± 0 88 b 4 11 ± 0 25 a ± 2 13 b ± 1 89 b sand (+ ) and those grown in AM-free sand and then buried with AM-free ( ) and AM-containing sand ( +) (Table 2). In P. virgatum all plants grown in AM-containing sand produced significantly greater leaf area than all those grown in AM-free sand (Table 2). Sand used for burial (AM-free or AM-containing) did not make any difference. In 1996, the mycorrhizal control (+) of both species did not significantly differ in its leaf area from nonmycorrhizal ( ) control (Table 2). Plants of both species grown in AM-containing sand or AM-free sand and then buried in mycorrhizal (+ +) or nonmycorrhizal (+ ) sand produced significantly higher leaf area than both controls (Table 2). The presence of mycorrhiza in sand used for planting, (+ +) or (+ ), significantly increased the leaf area as compared to ( ) and ( +) treatments in both species. The ( ) treatment in P. virgatum produced leaf area similar to that of controls (Table 2). ROOT COLONIZATION BY AM FUNGI In both the 1993 and 1996 experiments, no AM fungal colonization was observed in the ( ) and ( ) treatments confirming that sterilization of soil had killed AM fungi. Use of a millipore filter was effective because it did not allow hyphae to move from the lower to the upper horizon in (+ ) treatments (Table 3). In 1996, the plants had produced roots even in the burial deposits and they had been colonized by AM fungi only in treatments (+ +) and ( +) in which the plants were buried in soil containing AM fungi. Table 3. Mean (%) (± 1 SE) for arbuscular (AC), vesicular (VC) and hyphal colonization (HC) of A. psammophilum and P. virgatum after 11 weeks of burial in For this experiment sterilized sand was used for all treatments. Plants were grown in: control (MCS), AM-containing sand, no burial later (+); control (MFS), AM-free sand, no burial later ( ); MCS/MCS, AMcontaining sand, buried later with AM-containing sand (+ +); MCS/MFS, AM-containing sand buried later with AM-free sand (+ ); MFS/MFS, AM-free sand, buried later with AM-free sand ( ); MFS/MCS, AM-free sand, buried later with AMcontaining sand ( +) % Colonization of roots AC VC HC Original Burial Original Burial Original Burial Treatments soil deposit soil deposit soil deposit Agropyron psammophilum MCS (+) 23 5 ± ± ± 3 7 MFS ( ) MCS/MCS (+ +) 25 0 ± ± ± ± ± ± 3 1 MCS/MFS (+ ) 24 0 ± ± ± MFS/MFS ( ) MFS/MCS ( +) ± ± ± 3 0 Panicum virgatum MCS (+) 34 0 ± ± ± 4 3 MFS ( ) MCS/MCS (+ +) 32 5 ± ± ± ± ± ± 1 9 MCS/MFS (+ ) 31 3 ± ± ± MFS/MFS ( ) MFS/MCS ( +) ± ± ± 4 9
6 565 Growth stimulation by burial: role of mycorrhiza However, the percentage hyphal colonization in ( +) plants was not as high as the (+ +) treatment. Discussion The data from both experiments clearly showed that burial of plants in sand, irrespective of whether sand used for burial contained or did not contain AM fungi, increased all growth parameters of both A. psammophilum and P. virgatum species. For example, there was an increase (not always significant) in net CO 2 uptake, biomass and leaf area per plant in all buried treatments as compared to control. Why does plant growth increase following a burial episode? The growth stimulation may be owing to a number of factors (Maun 1998). For example, sand burial may (1) protect the root system of plants from drying out (Zhang & Maun 1991), (2) provide increased nutrient input and more soil surface area for the expansion of roots (Maun 1998), (3) exhibit reactive growth response to burial (Danin 1996) and (4) decrease interspecific competition through the elimination of species intolerant of sand accretion (Huiskes 1979). It is now possible to address the question posed in this study: can the growth enhancement following a burial episode be attributed to mycorrhizal fungi? This study provided a partial answer. First, in both years, the treatments in which the plants were grown in soil containing AM fungi and then buried with AMcontaining (+ +) or AM-free sand (+ ) always produced significantly higher biomass, leaf area and CER than control for both species. This increase may be the result of three factors: burial, AM fungi, or most probably a combination of both. Little & Maun (1996) showed that an increase in root biomass and root:shoot ratio of A. breviligulata was caused by an interaction between burial and AM fungi. As explained earlier and consistent with several other studies (Eldred & Maun 1982; Maun & Lapierre 1984; van der Putten 1989; Yuan, Maun & Hopkins 1993), burial by itself definitely increases all growth parameters. However, when plants were grown in sand containing AM fungi and then buried in sand with (+ +) or without AM fungi (+ ), a combination effect was produced in which the plants always produced the highest biomass. Second, if we compare plants grown in mycorrhizacontaining sand, (+ +) and (+ ), with those without AM fungi, ( ) and ( +), the former produced a significantly greater leaf area in both species, however, the increased leaf area did not always translate into increased biomass per plant. For example, in both A. psammophilum and P. virgatum, the (+ +) and (+ ) treatments did not show a significant increase in biomass during 1993 and 1996, respectively. One may ask though, why did ( +) plants not show an enhancement in vigour as compared to ( ) plants when they were buried in sand containing AM fungi. The most probable reason was the absence of AM fungi in the original planting and the availability of all other benefits of burial even to ( ) plants. Apparently, following a burial episode, the plants show reactive growth and exhibit enhanced vigour under buried conditions (Danin 1996). Another factor may be the length of time required by a plant to develop new roots on the stem within the sand deposit. Maun (1985) showed that depending on the species, it may take a long time for the plants to develop new roots. Even though AM fungi were present in the deposited substrate, they could not colonize these roots. In the 1996 experiment, the plants had produced new roots in the burial deposit after 11 weeks of burial in sand and these roots had been colonized by AM fungi but the expected increase in vigour did not materialize. ECOLOGICAL IMPLICATIONS We have shown that mycorrhizal fungi alone were not responsible for the enhanced growth shown by plants in the burial treatments. The growth stimulation following a burial episode is a composite response of numerous factors. The major contribution of mycorrhizal fungi to the plant would be the exploitation of the newly created soil volume. Because the levels of root colonization differed among species (Perumal 1994), the benefits of mycorrhizal fungi would be variable for different species (Anderson & Liberta 1987). Thus as suggested by Read (1993) and Francis & Read (1994), the overall development of plant communities in a chronosequence may be closely related to this fungal mutualism. Colonization by AM fungi increases CO 2 uptake as compared to non-mycorrhizal plants (Allen et al. 1981). The foredunes along the Great Lakes mark the first stage in plant succession where several perennial dune species, such as A. breviligulata, A. psammophilum and P. virgatum, had rather high levels of AM-fungal colonization (Perumal 1994). This mutualism would not only protect the roots from soil pathogens (Newsham et al. 1995; Little & Maun 1996), enhance nutrient uptake, improve translocation of water, and increase rootlet size and longevity (Allen 1991, 1996), but also in conjunction with burial episodes would allow the growth and buildup of dune systems. However, as soon as sand accretion ceases, the plants start to deteriorate in vigour (Eldred & Maun 1982), soil organic matter and nitrogen begin to build up (Baldwin & Maun 1983), soil flora and fauna are altered (Killam 1995) and a transition occurs from a herbaceous type to woody vegetation. Acknowledgements We thank Irene Krajnyk for drawing Figs 2 and 3, and Richard Little and three anonymous referees for constructive suggestions on earlier drafts of the manuscript. This study was supported by a grant from
7 566 J. V. Perumal & M. A. Maun the Natural Sciences and Engineering Research Council of Canada to M.A.M. References Allen, M.F. (1991) The Ecology of Mycorrhizae. Cambridge University Press, New York. Allen, M.F. (1996) The ecology of arbuscular mycorrhizas: a look back into the 20th century and a peak into the 21st a centenary review. Mycological Research 100, Allen, M.F., Smith, W.K., Moore, T.S., Jr & Christensen, M. (1981) Comparative water relations and photosynthesis of mycorrhizal and non-mycorrhizal Bouteloua gracilis H.B.K. Lag Ex Steud. New Phytologist 88, Anderson, R.C. & Liberta, A.E. (1987) Variation in vesicular arbuscular mycorrhizal relationships of two sand prairie species. American Midland Naturalist 118, Baldwin, K.A. & Maun, M.A. (1983) Microenvironment of Lake Huron sand dunes. Canadian Journal of Botany 61, Brundrett, M.C., Piche, Y. & Peterson, R.L. (1984) A new method for observing the morphology of vesicular arbuscular mycorrhizae. Canadian Journal of Botany 62, Danin, A. (1996) Plants of Desert Dunes. Springer-Verlag, New York. Eldred, R.A. & Maun, M.A. (1982) A multivariate approach to the problem of decline in vigour of Ammophila. Canadian Journal of Botany 60, Francis, R. & Read, D.J. (1994) The contribution of mycorrhizal fungi to determination of plant community structure. Plant and Soil 159, Huiskes, A.H.L. (1979) Biological flora of the British Isles. Ammophila arenaria (L.) Link. Journal of Ecology 67, Killam, K. (1995) Soil Ecology, 2nd edn. Cambridge University Press, New York. Koske, R.E. & Gemma, J.N. (1997) Mycorrhizae and succession in plantings of beachgrass in sand dunes. American Journal of Botany 84, Koske, R.E. & Polson, W.R. (1984) Are VA mycorrhizae required for sand dune stabilization? Bioscience 34, Li, X., George, E. & Marschner, H. (1991) Phosphorus depletion and ph decrease at the root soil and hyphae soil interfaces of VA mycorrhizal white clover fertilized with ammonium. New Phytologist 119, Little, L.R. & Maun, M.A. (1996) The Ammophila problem revisited: a role for mycorrhizal fungi. Journal of Ecology 84, 1 7. Maun, M.A. (1985) Population biology of Ammophila breviligulata and Calamovilfa longifolia on Lake Huron sand dunes. I. Habitat, growth form, reproduction and establishment. Canadian Journal of Botany 63, Maun, M.A. (1996) The effects of burial by sand on survival and growth of Calamovilfa longifolia. Ecoscience 3, Maun, M.A. (1998) Adaptations of plants to burial in coastal sand dunes. Canadian Journal of Botany 76, Maun, M.A. & Lapierre, J. (1984) The effects of burial by sand on Ammophila breviligulata. Journal of Ecology 72, McGonigle, T.P., Miller, M.H., Evans, D.G., Fairchild, G.L. & Swan, J.A. (1990) A new method which gives an objective measure of colonization of roots by vesicular arbuscular mycorrhizal fungi. New Phytologist 115, Newsham, K.K., Watkinson, A.R., West, H.M. & Fitter, A.H. (1995) Symbiotic fungi determine plant community structure: changes in lichen-rich community induced by fungicide application. Functional Ecology 9, Nicolson, T.H. (1960) Mycorrhiza in the Gramineae. II. Development in different habitats, particularly sand dunes. Transactions of the British Mycological Society 43, Perumal, J. (1994) Effects of burial in sand on dune plant communities and ecophysiology of component species. PhD thesis, University of Western Ontario, London, Ont., Canada. van der Putten, W.H. (1989) Establishment, growth and degeneration of Ammophila arenaria in coastal sand dunes. PhD thesis, Agricultural University, Wageningen, the Netherlands. Read, D.J. (1989) Mycorrhizas and nutrient cycling in sand dune ecosystems. Coastal Sand Dunes (eds C. H. Gimmingham, W. Ritchie, B. B. Willetts & A. J. Willis), vol. 96, pp Proceedings of Symposium. The Royal Society of Edinburgh, Edinburgh. Read, D.J. (1993) Mycorrhiza in plant communities. Advances in Plant Pathology 9, Thompson, J.P. (1990) Soil sterilization methods to show VA-mycorrhizae aid P and Zn nutrition of wheat in vertisols. Soil Biology and Biochemistry 22, Yuan, T., Maun, M.A. & Hopkins, W.G. (1993) Effects of sand accretion on photosynthesis, leaf water potential and morphology of two dune grasses. Functional Ecology 7, Zhang, J. & Maun, M.A. (1991) Establishment and growth of Panicum virgatum L., seedlings on a Lake Erie sand dune. Bulletin of the Torrey Botanical Club 188, Received 8 June 1998; revised 26 January 1999; accepted 26 January 1999
Mycorrhizae in relation to crop rotation and tillage Terence McGonigle
Mycorrhizae in relation to crop rotation and tillage Terence McGonigle, Dept. of Biology, Brandon University, Brandon, MB R7A 6A9 E- mail: mcgoniglet@brandonu.ca Abstract: Many crops form mycorrhizae,
More informationLab 6A: Microscopic Assessment of Mycorrhiza - Part 1
Lab 6A: Microscopic Assessment of Mycorrhiza - Part 1 What can I expect to learn in lab today? You will gain experience in assessing the degree of mycorrhizal infection of Western Wheatgrass (Agropyron
More informationEffect of host plant, cultivation media and inoculants sources on propagation of mycorrhizal fungus Glomus Mossae
EUROPEAN ACADEMIC RESEARCH Vol. V, Issue 12/ March 2018 ISSN 2286-4822 www.euacademic.org Impact Factor: 3.4546 (UIF) DRJI Value: 5.9 (B+) Effect of host plant, cultivation and inoculants sources on propagation
More informationMycorrhizal dependence and growth habit of warm-season and cool-season tallgrass prairie plants
Mycorrhizal dependence and growth habit of warm-season and cool-season tallgrass prairie plants B. A. Daniels Hetrick, D. Gerschefske Kitt, G. Thompson Wilson Canadian Journal of Botany, 1988, 66(7): 1376-1380,
More informationNature and Science, 2009;7(6), ISSN ,
Effect of phosphorus nutrition on growth and mycorrhizal dependency of Coriaria nepalensis seedlings Kiran Bargali and S.S. Bargali* Department of Botany, DSB Campus, Kumaun University, Nainital-263002,
More informationEFFECTS OF NUTRIENT LEVELS ON THE COLONIZATION OF POA SECUNDA BY ARBUSCULAR MYCORRHIZAL FUNGI AND DARK SEPTATE ENDOPHYTES
EFFECTS OF NUTRIENT LEVELS ON THE COLONIZATION OF POA SECUNDA BY ARBUSCULAR MYCORRHIZAL FUNGI AND DARK SEPTATE ENDOPHYTES Preya Sanjay Sheth Abstract Arbuscular mycorrhizal fungi (AMF) and dark septate
More informationQuantum Dots: A New Technique to Assess Mycorrhizal Contributions to Plant Nitrogen Across a Fire-Altered Landscape
2006-2011 Mission Kearney Foundation of Soil Science: Understanding and Managing Soil-Ecosystem Functions Across Spatial and Temporal Scales Progress Report: 2006007, 1/1/2007-12/31/2007 Quantum Dots:
More informationQUANTIFYING VESICULAR-ARBUSCULAR MYCORRHIZAE: A PROPOSED METHOD TOWARDS STANDARDIZATION*
W. (1981)87, 6-67 6 QUANTIFYING VESICULAR-ARBUSCULAR MYCORRHIZAE: A PROPOSED METHOD TOWARDS STANDARDIZATION* BY BRENDA BIERMANN Department of Botany and Plant Pathology, Oregon State University, Corvallis,
More informationSuccession: A Closer Look
Succession: A Closer Look By: Sarah M. Emery (Department of Biology, University of Louisville) 2010 Nature Education Citation: Emery, S. (2010) Succession: A Closer Look. Nature Education Knowledge 3(10):45
More informationCOMPONENTS OF VA MYCORRHIZAL INOCULUM AND THEIR EFFECTS ON GROWTH OF ONION
New Phytol. (1981) 87, 3 5 5.161 355 OMPONENTS OF VA MYORRHIZAL INOULUM AND THEIR EFFETS ON GROWTH OF ONION BY A. MANJUNATH AND D. J. BAGYARAJ Depart?nent of Agricultural Microbiology, University of Agricultural
More informationEFFECTS OF DROUGHT STRESS ON GROWTH RESPONSE IN CORN, SUDAN GRASS, AND BIG BLUESTEM TO GLOMUS ETUNICA TUM*
New Phytol. (\9S7), 15, A2^\ 4O3 EFFECTS OF DROUGHT STRESS ON GROWTH RESPONSE IN CORN, SUDAN GRASS, AND BIG BLUESTEM TO GLOMUS ETUNICA TUM* BY B. A. DANIELS HETRICK, D. GERSCHEFSKE KITT AND G. THOMPSON
More informationSymbiotic Fungal Endophytes that Confer Tolerance for Plant Growth in Saline and Dry Soils Zakia Boubakir, Elizabeth Cronin, Susan Kaminskyj
Symbiotic Fungal Endophytes that Confer Tolerance for Plant Growth in Saline and Dry Soils Zakia Boubakir, Elizabeth Cronin, Susan Kaminskyj Department of Biology University of Saskatchewan 1 Outline Background
More informationWorking with Mycorrhizas in Forestry and Agriculture
Working with Mycorrhizas in Forestry and Agriculture SUB Gdttingen 206 384661 Mark Brundrett, Neale Bougher, Bernie Dell, Tim Grove and Nick Malajczuk CONTENTS Chapter I. INTRODUCTION 1.1. MYCORRHIZAL
More informationDiscovery and Percent Colonization of Vesicular- Arbuscular Mycorrhizae in Pueraria lobata
Southern Adventist Univeristy KnowledgeExchange@Southern Senior Research Projects Southern Scholars 1996 Discovery and Percent Colonization of Vesicular- Arbuscular Mycorrhizae in Pueraria lobata Christine
More informationTreat the Cause not the symptom
Treat the Cause not the symptom A few facts about Novozymes Biologicals Bu sin ess d ivisio n o f No vo zym es w it h it s o w n R& D, Manufacturing, Sales & Marketing, Administration Headquartered in
More informationWhen do arbuscular mycorrhizal fungi protect plant roots from pathogens?
1 1 When do arbuscular mycorrhizal fungi protect plant roots from pathogens? 2 3 4 Benjamin A. Sikes Department of Integrative Biology, University of Guelph, Guelph, ON, Canada N1G2W1 5 6 7 8 9 10 11 Addendum
More informationElucidating the Mystery of the Tripartite Symbiosis Plant Mycorrhizal fungi Dark Septate Endophytes
Elucidating the Mystery of the Tripartite Symbiosis Plant Mycorrhizal fungi Dark Septate Endophytes Navarro-Borrell, Adriana 1,2, Hamel, C. 1,2, Germida, J 1 Gan, Y 2. 1 Dept. of Soil Science, University
More informationAssisted colonization of native forbs the use of climate-adjusted provenances. Sue McIntyre
Assisted colonization of native forbs the use of climate-adjusted provenances Sue McIntyre Why move grassland forbs? Grassland forbs need help populations are depleted and fragmented. Climate change likely
More informationfor GREENHOUSES GREENHOUSE Why are Mycorrhizae Important? Benefit to Plants
GREENHOUSE for GREENHOUSES Why are Mycorrhizae Important? Mycorrhizal fungi are essential to living soils, and allowed plants to colonize the surface of our planet around 450 million years ago. More than
More informationAGR1006. Assessment of Arbuscular Mycorrhizal Fungal Inoculants for Pulse Crop Production Systems
AGR1006 Assessment of AMF Inoculants for pulse crop production systems 1 AGR1006 Assessment of Arbuscular Mycorrhizal Fungal Inoculants for Pulse Crop Production Systems INVESTIGATORS Principal Investigator:
More informationDo soil communities differ between native and invasive dune grasses on Great Lakes sand dunes?
Do soil communities differ between native and invasive dune grasses on Great Lakes sand dunes? Matthew L. Reid & Sarah M. Emery MIPN Invasive Plant Symposium December 10, 2015 Exotic Plants www.inps.gov
More informationspatial dispersion, interspecific competition and mycorrhizal colonization
Research Plant nitrogen capture from organic matter as affected by Blackwell Publishing, Ltd spatial dispersion, interspecific competition and mycorrhizal colonization Angela Hodge Department of Biology,
More informationUsing Soil Microbes to Enhance Restoration of Native FL Scrub. Ben Sikes University of Texas at Austin
Using Soil Microbes to Enhance Restoration of Native FL Scrub Ben Sikes University of Texas at Austin Talk Outline The role of soil biota in ecosystem processes and plant Current uses of soil microbes
More informationEctomycorrhizae. Endomycorrhizae. Arbuscular mycorrhizae. Ericoid mycorrhizae. Orchid mycorrhizae. Ectendomycorrhizae
Arbuscular mycorrhizae Endomycorrhizae Ericoid mycorrhizae Orchid mycorrhizae http://www.microbiologyprocedure.com/mycorrhizae/ectomycorrhizae.html Ectendomycorrhizae (ECM) Ecto- means outside and in the
More information1 Soil Factors Affecting Nutrient Bioavailability... 1 N.B. Comerford
Contents 1 Soil Factors Affecting Nutrient Bioavailability........ 1 N.B. Comerford 1.1 Introduction........................... 1 1.2 Release of Nutrients from the Soil Solid Phase........ 2 1.3 Nutrient
More informationAbsorption of Mineral Salts by Higher Plant
Article Shared by Absorption of Mineral Salts by Higher Plant Let us make an in-depth study of the Mycorrhizae. After reading this article you will learn about their role in absorption of mineral salts
More informationAs negative mycorrhizal growth responses (MGR) have received more experimental attention
Supplemental Material: Annu. Rev. Plant Biol. 2011. 62:227-250 Supplementary A Negative mycorrhizal responses As negative mycorrhizal growth responses (MGR) have received more experimental attention it
More informationRoot-Knot Nematode on Tomato Plants: Effects of Nemacur, Phosphorus and. Infection Time
Ayman Elbuhuth Scientific Journal., Vol 5, pp. 88-107, 1996 Interaction of VA Mycorrhizal Fungi and Root-Knot Nematode on Tomato Plants: Effects of Nemacur, Phosphorus and Infection Time M. O. MIRGHANI
More informationLecture 24 Plant Ecology
Lecture 24 Plant Ecology Understanding the spatial pattern of plant diversity Ecology: interaction of organisms with their physical environment and with one another 1 Such interactions occur on multiple
More informationMYCORRHIZAL COLONIZATION AS IMPACTED BY CORN HYBRID
Proceedings of the South Dakota Academy of Science, Vol. 81 (2002) 27 MYCORRHIZAL COLONIZATION AS IMPACTED BY CORN HYBRID Marie-Laure A. Sauer, Diane H. Rickerl and Patricia K. Wieland South Dakota State
More informationEffect of arbuscular mycorrhiza and phosphorus levels on growth and water use efficiency in Sunflower at different soil moisture status
Effect of arbuscular mycorrhiza and phosphorus levels on growth and water use efficiency in Sunflower at different soil moisture status T.K. Nagarathna 1, T.G. Prasad 1, D.J. Bagyaraj *2 and Y.G. Shadakshari
More informationImpact of cropping system on mycorrhiza
Impact of cropping system on mycorrhiza H. Kahiluoto 1 and M. Vestberg 2 Agricultural Research Centre of Finland 1 Ecological Production, Partala, FIN-51900 Juva, Finland 2 Laukaa Research and Elite Plant
More informationSoil ecology. KEN KILLHAM Department of Plant and Soil Science, University of Aberdeen CAMBRIDGE UNIVERSITY PRESS. with electron micrographs by
ot Soil ecology KEN KILLHAM Department of Plant and Soil Science, University of Aberdeen with electron micrographs by R A L P H FOSTER, CSIRO Division of Soils, South Australia CAMBRIDGE UNIVERSITY PRESS
More informationGeorgia Performance Standards for Urban Watch Restoration Field Trips
Georgia Performance Standards for Field Trips 6 th grade S6E3. Students will recognize the significant role of water in earth processes. a. Explain that a large portion of the Earth s surface is water,
More informationInfluence of Mycorrhizal Source and Seeding Methods on Native Grass Species Grown in Soils from a Disturbed Site
Influence of Mycorrhizal Source and Seeding Methods on Native Grass Species Grown in Soils from a Disturbed Site Todd R. Caplan Heather A. Pratt Samuel R. Loftin Abstract Mycorrhizal fungi are crucial
More information1 Towards Ecological Relevance Progress and Pitfalls in the Path Towards an Understanding of Mycorrhizal Functions in Nature... 3 D.J.
Contents Section A: Introduction 1 Towards Ecological Relevance Progress and Pitfalls in the Path Towards an Understanding of Mycorrhizal Functions in Nature... 3 D.J. Read 1.1 Summary.............................
More informationBIOCONTROL OF ROOT ROT OF AVOCADO SEEDLINGS
South African Avocado Growers Association Yearbook 1993. 16:70-72 BIOCONTROL OF ROOT ROT OF AVOCADO SEEDLINGS J.A. DUVENHAGE 1 AND J.M. KOTZÉ 2 Merensky Technological Services, P.O. Box 14, Duiwelskloof
More informationSTUDY ON THE USE OF ARBUSCULAR MYCORRHIZA FUNGI FOR IMPROVING CROP PRODUCTIVITY IN AGROFORESTRY SYSTEM IN GUNUNG WALAT EDUCATIONAL FOREST
9 STUDY ON THE USE OF ARBUSCULAR MYCORRHIZA FUNGI FOR IMPROVING CROP PRODUCTIVITY IN AGROFORESTRY SYSTEM IN GUNUNG WALAT EDUCATIONAL FOREST By Sri Wilarso Budi R 1 Laboratory Silviculture, Department Silviculture,
More informationEFFECT OF ENDOGONE MYCORRHIZA ON PLANT GROWTH
New Phytol. (1969) 68, 953-963. EFFECT OF ENDOGONE MYCORRHIZA ON PLANT GROWTH III. INFLUENCE OE INOCULUM CONCENTRATION ON GROWTH AND INFECTION IN TOMATO BY M. J. DAFT AND T. H. NICOLSON Department of Biological
More informationReview: Science Practice 1
Review: Science Practice 1 The student can use representations and models to communicate scientific phenomena and solve scientific problems. Visual representations and models are indispensable tools for
More informationABSTRACT I. INTRODUCTION
2017 IJSRST Volume 3 Issue 7 Print ISSN: 2395-6011 Online ISSN: 2395-602X Themed Section: Science and Technology Effect of Arbuscular Mycorrhizal Fungi on Chemical Properties of Experimental Barren Soil
More informationINTERACTION BETWEEN A VESICULAR-ARBUSCULAR MYCORRHIZAL FUNGUS AND STREPTOMYCES CINNAMOMEOUS AND THEIR EFFECTS ON FINGER MILLET
New Phytol. (1982) 92, 41-45 INTERACTION BETWEEN A VESICULAR-ARBUSCULAR MYCORRHIZAL FUNGUS AND STREPTOMYCES CINNAMOMEOUS AND THEIR EFFECTS ON FINGER MILLET BY K. R. KRISHNA*, A. N. BALAKRISHNA AND D. J.
More informationCharacterization of two arbuscular mycorrhizal fungi in symbiosis with Allium porrum: colonization, plant growth and phosphate uptake
New Phytol. (1999, 144, 163 172 Characterization of two arbuscular mycorrhizal fungi in symbiosis with Allium porrum: colonization, plant growth and phosphate uptake S. DICKSON,*, S. E. SMITH, AND F. A.
More informationMycorrhizal Fungi. Symbiotic relationship with plants -- form sheath around fine roots and extend hyphae into soil and sometimes into root cells
Mycorrhizal Fungi Symbiotic relationship with plants -- form sheath around fine roots and extend hyphae into soil and sometimes into root cells Mycorrhizae transfer nutrients to roots (important in infertile
More informationSUCCESSION Community & Ecosystem Change over time
Schueller NRE 509: Lecture 23 SUCCESSION Community & Ecosystem Change over time 1. Forest study revisited 2. Patterns in community change over time: 3 cases 3. What is changing? 4. What determines the
More informationPlant Growth-promoting Rhizobacteria and Soybean [Glycine max (L.) Merr.] Growth and Physiology at Suboptimal Root Zone Temperatures
Annals of Botany 79: 3 9, 1997 Plant Growth-promoting Rhizobacteria and Soybean [Glycine max (L.) Merr.] Growth and Physiology at Suboptimal Root Zone Temperatures FENG ZHANG*, NARJES DASHTI*, R. K. HYNES
More informationMYCORRHIZAL FUNGI AS BIOFERTILIZER FOR FRUIT TREE PRODUCTION IN THAILAND. Supaporn Thamsurakul 1 and Sompetch Charoensook 2
MYCORRHIZAL FUNGI AS BIOFERTILIZER FOR FRUIT TREE PRODUCTION IN THAILAND Supaporn Thamsurakul 1 and Sompetch Charoensook 2 1 Soil Microbiology Research Group, Soil Science Division, Department of Agriculture,
More informationPhysiological (Ecology of North American Plant Communities
Physiological (Ecology of North American Plant Communities EDITED BY BRIAN F. CHABOT Section of Ecology and Systematics Cornell University AND HAROLD A. MOONEY Department of Biological Sciences Stanford
More informationMYCORRHIZAL OCCURRENCE IN WILLOWS IN A NORTHERN FRESHWATER WETLAND
Ms. 4492 MYCORRHIZAL OCCURRENCE IN WILLOWS IN A NORTHERN FRESHWATER WETLAND by PAUL E. MARSHALL and NANCY PATTULLO School of Natural Resources, University of Michigan, Ann Arbor, MI 48109 KEY WORDS Ectomycorrhiza
More informationPlants can be either herbaceous or woody.
Plant Structure Plants can be either herbaceous or woody. Herbaceous plants are plants with growth which dies back to the ground each year, in contrast with woody plants Most herbaceous plants have stems
More informationEFFECTS OF SEED SIZE AND EMERGENCE TIME ON SUBSEQUENT GROWTH OF PERENNIAL RYEGRASS
Phytol (980) 84, 33-38 EFFECTS OF SEED SIZE AND EMERGENCE TIME ON SUBSEQUENT GROWTH OF PERENNIAL RYEGRASS BY ROBERT E. L. NAYLOR School of Agriculture, The University, Aberdeen {Accepted 2 January 979)
More informationHow Mycorrhizae Can Improve Plant Quality
How Mycorrhizae Can Improve Plant Quality 33 How Mycorrhizae Can Improve Plant Quality Michael P. Amaranthus, Larry Simpson, and Thomas D. Landis Mycorrhizal Applications Inc., 810 NW E Street, Grants
More informationChapter 7. General discussion
In this thesis, results of studies on the dynamics of biomass and functions of saprotrophic fungi during conversion from arable land into semi-natural heathland are described. The main objective of this
More informationEelgrass biomass and production
Eelgrass biomass and production Objectives To introduce methods for assessing basic parameters fundamental to many seagrass studies such as shoot size and stand structure expressed as biomass and shoot
More informationGrowth of Garlic Mustard (Alliaria petiolata) in Native Soils of Different Acidity
Transactions of the Illinois State Academy of Science (1995), Volume 88, 3 and 4, pp. 91-96 Growth of Garlic Mustard (Alliaria petiolata) in Native Soils of Different Acidity Roger C. Anderson and Timothy
More informationGnzman-Plazola. R.A.. R. Ferrera-Cerrato and JJX Etchevers. Centro de Edafologia, Colegio de Postgraduados, Montecillo, Mexico.
Gnzman-Plazola. R.A.. R. Ferrera-Cerrato and JJX Etchevers. Centro de Edafologia, Colegio de Postgraduados, Montecillo, Mexico. LEUCAENA LEUCOCEPHALA, A PLANT OF HIGH MYCORRHIZAL DEPENDENCE IN ACID SOILS
More informationWantira Ranabuht Department of Botany, Faculty of Science Chulalongkorn University
EFFECTS OF ARBUSCULAR MYCORRHIZAL FUNGI ON GROWTH AND PRODUCTIVITY OF LETTUCE Wantira Ranabuht Department of Botany, Faculty of Science Chulalongkorn University Lettuce Lettuce : Lactuca sativa L. Family
More informationGREEN LIFE. Plants and Photosynthesis W 398
W 398 GREEN LIFE Plants and Photosynthesis Savannah Webb, Former 4-H Extension Agent, Maury County Jennifer Richards, Assistant Professor, 4-H Youth Development MANAGEMENT OF APHIDS AND BYD IN TENNESSEE
More informationDepartment of Agriculture, Zahedan Branch, Islamic Azad University, Zahedan, Iran. Corresponding author: Hamidreza Mobasser
Journal of Novel Applied Sciences Available online at www.jnasci.org 2013 JNAS Journal-2013-2-10/456-460 ISSN 2322-5149 2013 JNAS Study of vesicular arbuscular mycorrhizal (VAM) fungi symbiosis with maize
More informationModel Analysis for Growth Response of Soybean
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS Vol. 34, Nos. 17 & 18, pp. 2619 2632, 2003 Model Analysis for Growth Response of Soybean A. R. Overman * and R. V. Scholtz III Agricultural and Biological
More informationInfluence of Aphelenchus avenae on Vesicular-arbuscular Endomycorrhizal Growth Response in Cotton
Influence of Aphelenchus avenae on Vesicular-arbuscular Endomycorrhizal Growth Response in Cotton R. S. Hussey and R. W. Roncadori ~ Abstract: The influence of,4phelenchus avenae on the relationship between
More informationSecondary Succession and its Effects on Soil Nutrients and Fungal Communities. Amanda Cayo
Cayo 1 Secondary Succession and its Effects on Soil Nutrients and Fungal Communities Amanda Cayo Abstract Fungi serve many purposes in ecosystems from fixing nitrogen for plants to decomposing detritus.
More informationLinks between Plant and Fungal Diversity in Habitat Fragments of Coastal Sage Scrub
26-211 Mission Kearney Foundation of Soil Science: Understanding and Managing Soil-Ecosystem Functions Across Spatial and Temporal Scales Final Report: 271, 1/1/29-12/31/29 Links between Plant and Fungal
More informationInoculation and Colonization of Four Saltmarsh Species with Vesicular-Arbuscular Mycorrhizal Fungi (Mississippi)
Inoculation and Colonization of Four Saltmarsh Species with Vesicular-Arbuscular Mycorrhizal Fungi (Mississippi) Melissa Pratt-Zossoungbo (NOAA National Ocean Service, Policy, Planning and Analysis Division,
More informationA Level. A Level Biology. AQA, OCR, Edexcel. Photosynthesis, Respiration Succession and Nutrient Cycle Questions. Name: Total Marks: Page 1
AQA, OCR, Edexcel A Level A Level Biology Photosynthesis, Respiration Succession and Nutrient Cycle Questions Name: Total Marks: Page 1 Q1. The diagram shows the energy flow through a freshwater ecosystem.
More informationSoil Biology. Chapter 10
Soil Biology Chapter 10 The Sounds of Soil Soil as a Transition Between Aquatic and Aerial System Bacteria in a Drying Environment Wet (open structure) Dry (dense) Holden P.A., J.R. Hunt, and M. K. Firestone,
More informationRELATIONSHIPS BETWEEN HOST AND ENDOPHYTE DEVELOPMENT IN MYCORRHIZAL SOYBEANS
Phytol. (1982) 90, 537-543 537 RELATIONSHIPS BETWEEN HOST AND ENDOPHYTE DEVELOPMENT IN MYCORRHIZAL SOYBEANS BY G. J. BETHLENFALVAY, M. S. BROWN, AND R. S. PACOVSKY Western Regional Research Center, U.S.
More informationHome-field advantage? evidence of local adaptation among plants, soil, and arbuscular mycorrhizal fungi through meta-analysis
Rúa et al. BMC Evolutionary Biology (2016) 16:122 DOI 10.1186/s12862-016-0698-9 RESEARCH ARTICLE Home-field advantage? evidence of local adaptation among plants, soil, and arbuscular mycorrhizal fungi
More informationEffects of Species, Water, and Nitrogen on Competition Among Three Prairie Grasses
The Prairie Naturalist 43(1/2):45 51; 2011 Effects of Species, Water, and Nitrogen on Competition Among Three Prairie Grasses JERRY L. WEATHERFORD AND RANDALL W. MYSTER 1 Biology Department, Box 89, University
More informationDigital ESF. SUNY College of Environmental Science and Forestry. Max Hermanson. Silus Weckel. Alex Kozisky.
SUNY College of Environmental Science and Forestry Digital Commons @ ESF Cranberry Lake Biological Station Environmental and Forest Biology 2017 Session D, 2017 First Place: Under the Sphagnum: An Observational
More informationDevelopment of the VAM fungus, Glomus mosseae in groundnut in static solution culture
Proc. Indian Acad. Sci. (Plant Sci.), Vol. 93, No. 2, May 1984, pp. 105-110 9 Printed in India. Development of the VAM fungus, Glomus mosseae in groundnut in static solution culture K PARVATHI, K VENKATESWARLU
More informationVesicular-arbuscular mycorrhizal associations of sesamum
Proc. lndian Acad. Sci. (Plant Sci.), Vol. 98, No. 1, February 1988, pp. 55-59. 9 Printed in India. Vesicular-arbuscular mycorrhizal associations of sesamum M VIJAYALAKSHMI and A S RAO Department of Botany,
More informationOntario Science Curriculum Grade 9 Academic
Grade 9 Academic Use this title as a reference tool. SCIENCE Reproduction describe cell division, including mitosis, as part of the cell cycle, including the roles of the nucleus, cell membrane, and organelles
More informationBioWash as an Adjuvant, Translocation Promoter, and Cationic Exchange Stimulator Overview of Processes within the Plant
BioWash as an Adjuvant, Translocation Promoter, and Cationic Exchange Stimulator Overview of Processes within the Plant Photosynthesis is the primary driver of the plant. Through a series of complex steps,
More informationINTERACTION BETWEEN A VESICULAR-ARBUSCULAR MYCORRHIZA AND RHIZOBIUM AND THEIR EFFECTS ON SOYBEAN IN THE FIELD
New Phytol. (1979) 82. 141-145 I j_i INTERACTION BETWEEN A VESICULAR-ARBUSCULAR MYCORRHIZA AND RHIZOBIUM AND THEIR EFFECTS ON SOYBEAN IN THE FIELD BY D. J- BAGYARAJ, A. MANJUNATH AND R.B. PATIL Department
More informationPeter Gault Kennedy CURRICULUM VITAE. 321 Koshland Hall phone: University of California, Berkeley fax: Berkeley, CA 94720
Peter Gault Kennedy CURRICULUM VITAE Department of Plant and Microbial Biology pkennedy@berkeley.edu 321 Koshland Hall phone: 510-643-5483 University of California, fax: 510-642-4995, CA 94720 Professional
More informationGhazi N. AL-KARAKI. Faculty of Agriculture, Jordan University of Science and Technology, Irbid, Jordan *Corresponding author:
DOI: 10.7251/AGRENG1602154A UDC 633.21:582.28:581.557 APPLICATION OF MYCORRHIZAL FUNGI IN LANDSCAPE TURFGRASS ESTABLISHMENT UNDER ARID AND SEMIARID ENVIRONMENTS Ghazi N. AL-KARAKI Faculty of Agriculture,
More informationPhenanthrene and pyrene uptake by arbuscular Mycorrhizal Fungi ( ) Buy online at
Mycorrhizal Fungi:: Soil, Agriculture And Environmental Implications (Air, Water And Soil Pollution Science And Technology; Agriculture Issues And Policies) READ ONLINE Phenanthrene and pyrene uptake by
More informationModel Analysis for Partitioning of Dry Matter and Plant Nitrogen for Stem and Leaf in Alfalfa
Communications in Soil Science and Plant Analysis, 36: 1163 1175, 2005 Copyright # Taylor & Francis, Inc. ISSN 0010-3624 print/1532-2416 online DOI: 10.1081/CSS-200056889 Model Analysis for Partitioning
More informationSoil fungal-arthropod responses to Populus tremuloides grown under enriched atmospheric CO 2 under field conditions
Global Change Biology (1997) 3, 473 478 Soil fungal-arthropod responses to Populus tremuloides grown under enriched atmospheric CO 2 under field conditions JOHN N. KLIRONOMOS,* MATTHIAS C. RILLIG, MICHAEL
More informationPOTENTIAL FOR USING MYCORRHIZAL PLANTS TO REVE.GETATE TEXAS HIGHWAY RIGHT OF WAYS
POTENTIAL FOR USING MYCORRHIZAL PLANTS TO REVE.GETATE TEXAS HIGHWAY RIGHT OF WAYS by Fred T. Davies, Jr., Ph.D Department of Horticultural Sciences Texas A&M University and Wayne G. Mccully, Ph.D Department
More informationBi-directional transfer of phosphorus between red clover and perennial ryegrass via arbuscular mycorrhizal hyphal links
Bi-directional transfer of phosphorus between red clover and perennial ryegrass via arbuscular mycorrhizal hyphal links Yao, Q., Li, X. L., Ai, W. D., & Christie, P. (2003). Bi-directional transfer of
More informationN, P and O 3 -responses of subalpine plants and their
Federal Department of Economic Affairs FDEA Agroscope Reckenholz-Tänikon Research Station ART N, P and O 3 -responses of subalpine plants and their mycorrhiza Verena Blanke, Matthias Volk, Seraina Bassin,
More informationAMMONIUM UPTAKE FROM DILUTE SOLUTIONS BY PINUS RADIATA SEEDLINGS
10 Vol. 9 AMMONIUM UPTAKE FROM DILUTE SOLUTIONS BY PINUS RADIATA SEEDLINGS JAMES W. FLEWELLING School of Forest Resources, University of Georgia, Athens, Georgia, U.S.A. (First received for publication
More informationContact Peter Calkin Mobile:
DISCUSSION PAPER: Improved Grass Production Contact Peter Calkin Mobile: 0411 156 839 Email: peter@microsoil.com.au POTENTIAL FOR INCREASED PASTURE PRODUCTION WITH VAM INOCULATION There have been many
More informationEcological Succession
Ecological Succession Most natural ecosystems are in a state of equilibrium. This means that their biotic and abiotic features remain relatively constant over time. The major biomes, for example, usually
More informationEFFECT OF INOCULATION WITH VAM-FUNGI AND BRADYRHIZOBIUM ON GROWTH AND YIELD OF SOYBEAN IN SINDH
Pak. J. Bot., 37(1): 169-173, 2005. EFFECT OF INOCULATION WITH VAM-FUNGI AND BRADYRHIZOBIUM ON GROWTH AND YIELD OF SOYBEAN IN SINDH Department of Botany, University of Karachi, Karachi-75270, Pakistan.
More informationKR bluestem: Restoration to native grasses and forbs. David L. Davidson
KR bluestem: Restoration to native grasses and forbs David L. Davidson 1996-2016 Ecological Restoration, vol. 26, No. 4, 2008, pp. 331-339 KR Bluestem Restoration Project update -- 2009 to present In 2007,
More informationGRADE 7: Life science 4. UNIT 7L.4 7 hours. Growing plants. Resources. About this unit. Previous learning. Expectations
GRADE 7: Life science 4 Growing plants UNIT 7L.4 7 hours About this unit This unit is the fourth of six units on life science for Grade 7. This unit is designed to guide your planning and teaching of lessons
More informationThe Use of Mycorrhizae in Mined Land Reclamation
The Use of Mycorrhizae in Mined Land Reclamation Susan Sturges Mined land sites are generally known to be nutrient poor and contain soils that are in dire need of stabilization to prevent erosion. Marked
More informationNREM 301 Forest Ecology & Soils. Day 24 November 16, Succession Nutrient Cycling. Field Quiz next Tuesday see study guide
NREM 301 Forest Ecology & Soils Day 24 November 16, 2008 Succession Nutrient Cycling Field Quiz next Tuesday see study guide Quiz Review What are 2 different terms for buds that give rise to cones? Floral
More informationTRANSPIRATION. An important regulator of transpiration is the stomatal complex composed of the opening or
BIOL 1134 1 TRANSPIRATION LEARNING OBJECTIVES After completing this exercise, students should be able to: Describe the process of and principles behind transpiration. Describe how stomata, guard cells,
More informationSoil Biology. The Sounds of Soil. Soils and Water, Spring Lecture 9, Soil Biology 1. Soil as a Transition Between Aquatic and Aerial System
Soil Biology Chapter 10 The Sounds of Soil Soil as a Transition Between Aquatic and Aerial System Lecture 9, Soil Biology 1 Bacteria in a Drying Environment Wet (open structure) Dry (dense) Holden P.A.,
More informationWhy Should You Consider Using Mycorrhizae? Northeast Greenhouse Conference 2018 Mycorrhizal Applications LLC 1
Why Should You Consider Using Mycorrhizae? Mycorrhizal Applications LLC 1 A mutually beneficial relationship, which is characterized by movement of carbon flows to the fungus and inorganic nutrients move
More informationExperimental Design and Statistical Analysis: Bt Corn, Lignin, and ANOVAs
Experimental Design and Statistical Analysis: Bt Corn, Lignin, and ANOVAs Part I "Abstract" This case is based on a recent publication Saxena and Stotzky entitled "Bt Corn Has a Higher Lignin Content Than
More informationIf you are searched for a book by Gisela Cuenca;Alicia Caceres;Giovanny Oirdobro;Zamira Hasmy;Carlos Urdaneta Arbuscular mycorrhizae as an
Arbuscular Mycorrhizae As An Alternative For A Sustainable Agriculture In Tropical Areas/Las Micorrizas Arbusculares Como Alternativa Para Una... Tropicais.: An Article From: Interciencia [HTML] [Dig By
More informationChapter 4 AND 5 Practice
Name: Chapter 4 AND 5 Practice 1. Events that occur in four different ecosystems are shown in the chart below. Which ecosystem would most likely require the most time for ecological succession to restore
More informationTHE EFFECTS OF SOIL TEMPERATURE ON PLANT GROWTH, NODULATION AND NITROGEN FIXATION IN CASUARINA CUNNINGHAMIANA MIQ.
New Phytol. (1985) 11, 441^5 441 THE EFFECTS OF SOIL TEMPERATURE ON PLANT GROWTH, NODULATION AND NITROGEN FIXATION IN CASUARINA CUNNINGHAMIANA MIQ. BY PAUL REDDELLi'2, Q ^ BOWENi AND A. D. ROBSON^ 1 CSIRO,
More informationEFFECT OF GLOMUS MOSSEAE ON GROWTH AND CHEMICAL COMPOSITION OF CAJANUS CAJAN (VAR. ICPL-87)
Scholarly Research Journal for Interdisciplinary Studies, Online ISSN 2278-8808, SJIF 2016 = 6.17, www.srjis.com UGC Approved Sr. No.45269, SEPT-OCT 2017, VOL- 4/36 EFFECT OF GLOMUS MOSSEAE ON GROWTH AND
More informationEFFECT OF BIOCHAR ON PLANT GROWTH AND DEVELOPMENT IN STRAWBERRY, PEACH, APPLE AND NECTARINE
EFFECT OF BIOCHAR ON PLANT GROWTH AND DEVELOPMENT IN STRAWBERRY, PEACH, APPLE AND NECTARINE Lidia Sas Paszt, Mateusz Frąc, Edyta Derkowska, Sławomir Głuszek, Paweł Trzciński Research Institute of Horticulture
More information