The Role of Endomycorrhizae in Revegetation Practices in the Semi-Arid West. II. A Bioassay to Determine the Effect of Land Disturbance on Endomycorrhizal Populations

Moorman, Thomas B.; Reeves, F. Brent

doi:10.2307/2442619

Cited by 120 publications

(57 citation statements)

References 4 publications

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“…This method proposed by Moorman and Reeves (Moorman and Reeves 1979) was performed using corn plants. The bioassay consisted of a serial dilution of each of the soil samples in sterile sand using a 1:10 dilution factor.…”

Section: Mycorrhizal Infective Potential (Mip)mentioning

confidence: 99%

Disturbance and land use effect on functional diversity of the arbuscular mycorrhizal fungi

2015

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The arbuscular mycorrhizal fungal diversity in Mexico has not been intensively studied. Although some studies have reported the presence of 29 % of the reported species in the world, the knowledge regarding their functional diversity is poor. The aim of this study was to evaluate the impact of the disturbance on arbuscular mycorrhizal fungi (AMF) functional diversity. Three sites at the Biosphere Reserve Los Tuxtlas in the state of Veracruz were selected for this study, according to the disturbance gradient and the land use: López Mateos (LM), San Fernando (SF), and Venustiano Carranza (VC) (with low, medium and high disturbance, respectively). The land use in each site includes milpa and pasture. High percentages of root colonization, spore abundance and spore viability were found on LM soils. Additionally, 100 % of the pasture soils have a high mycorrhizal infective potential (MIP). In addition, the fungi consortiums coming from that site promote the highest mycorrhizal growth response (MGR), with increases ranging from 74.1 to 194.6 % over the control treatment. SF soils had high percentages of root colonization and spore viability, whereas only 20 % of these soils had a high MIP, and their MGR promoted increases ranged from 14.6 to 120.4 % over the control. Soils from VC had the lowest percentages of root colonization and spore viability. Only 10 % of the soils had high MIP, and their MGR was not better than the control. These results indicate that the soil disturbance or use changes negatively affect the functionality of AMF.

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Section: Mycorrhizal Infective Potential (Mip)mentioning

confidence: 99%

Disturbance and land use effect on functional diversity of the arbuscular mycorrhizal fungi

2015

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“…Mycorrhizal inoculum potential (MIP) was measured as percent infection of a bioassay plant (Moorman and Reeves, 1979). A single seedling of E. canadensis, grown for 10 days in vermiculite, was transplanted into 250 mL of plot material into a container (Stuewe and Sons, Inc., Corvallis, OR) and grown in a greenhouse at 27°C with 14 hr of daylight under high intensity discharge lamps for 90 days.…”

Section: Infectivity Bioassaymentioning

confidence: 99%

Field responses to added organic matter, arbuscular mycorrhizal fungi, and fertilizer in reclamation of taconite iron ore tailing

1996

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A three season study was conducted to determine the effect of added composted yard waste, arbuscular mycorrhizal (AM) fungi, and fertilizer on plant cover, standing crop biomass, species composition, AM fungal infectivity and spore density in coarse taconite iron ore tailing plots seeded with a mixture of native prairie grasses. Plant cover and biomass, percent seeded species, mycorrhizal infectivity and spore density were greatly increased by additions of composted yard waste. After three seasons, total plant cover was also greater in plots with added fertilizer. Third season plant cover was also greater in plots amended with the higher rate (44.8 Mg ha -l) of compost than the moderate rate (22.4 Mg ha-l). Field inoculation with AM fungi also increased plant cover during the second season and infectivity during the first two seasons. Seeded native species, consisting mostly of the cover species Elymus canadensis, dominated plot vegetation during the second and third seasons. Dispersal of AM fungal propagules into nonmycorrhizal plots occurred rapidly and increased infectivity in compost-amended plots during the third season. In plots with less than 10% plant cover, AM fungal infectivity of inoculated plots was greatly reduced after the second season. The high level of plant cover and the trend of increasing proportion of mycorrhizal-dependent warm-season grasses, along with increases in infectivity, forecast the establishment of a sustainable native grass community that will meet reclamation goals.

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“…For adequate comparison, we standardized the inocula to produce the same percentage of primary mycorrhizal colonization using a plant bioassay (Moorman and Reeves, 1979). Dilutions (undiluted, 1:3 and 1:15 v inoculum:v sterilized soil) were made using steam-sterilized field soil as a diluent for the soilroots inoculum material of each type of inoculum, prepared as explained above.…”

Section: Soilmentioning

confidence: 99%

Response of ?criollo? maize to single and mixed species inocula of arbuscular mycorrhizal fungi

Gavito

Varela

1995

Plant Soil

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We tested the effect of two single species inocula and a mixed inoculum of the native population of arbuscular mycorrhizal (AM) fungi on the growth response of "criollo" maize (Zea mays L.). To determine the inocula that produced the highest response on maize growth, we conducted a greenhouse experiment at 3 levels of P fertilization (0, 40 and 80 kg ha-l). Inoculation with Glomus mosseae (Nicolson and Gerdemann) Gerd. and Trappe (LMSS) produced the greatest shoot growth rates at the two lowest P fertilization levels. Inoculation with Acaulospora bireticulata Rothwell and Trappe (ABRT) and the native population (NP) resulted in similar shoot growth rates at all P levels. These rates were higher than the non-mycorrhizal control rate at the lowest P level but lower than the control at the highest P level. Also, ABRT and NP had significantly lower shoot growth rates than the inoculation treatment with G. mosseae at all P levels. The non-mycorrhizal control had the lowest growth rate at the lowest P level but its growth rate increased linearly with increased P fertilization. Inoculation with G. mosseae and A. bireticulata produced similar colonization rates which were lower than the native population colonization rate. There was no correlation between colonization and shoot growth rates.

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The Role of Endomycorrhizae in Revegetation Practices in the Semi-Arid West. II. A Bioassay to Determine the Effect of Land Disturbance on Endomycorrhizal Populations

Cited by 120 publications

References 4 publications

Disturbance and land use effect on functional diversity of the arbuscular mycorrhizal fungi

Disturbance and land use effect on functional diversity of the arbuscular mycorrhizal fungi

Field responses to added organic matter, arbuscular mycorrhizal fungi, and fertilizer in reclamation of taconite iron ore tailing

Response of ?criollo? maize to single and mixed species inocula of arbuscular mycorrhizal fungi

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