Vesicular-Arbuscular Mycorrhiza Fragments as a Means of Endophyte Identification at Hydrophytic Sites

Liberta, Anthony E.; Anderson, Roger C.; Dickman, Laura A.

doi:10.2307/3792934

Cited by 12 publications

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“…9 Percentage mycorrhizal root length of 15-year-old Eucalyptus camaldulensis trees at site 3 (Á // July sampling, 1 November sampling). For each year, columns labelled with different letters differ significantly (Newman Keuls test, P < 0.05) soil moisture levels influence AM colonization and that most intense development of AM is registered under dry conditions (Rabatin 1979;Liberta et al 1983). Likewise, endomycorrhiza have been reported to form in arid soils (Khan 1974).…”

Section: Resultsmentioning

confidence: 99%

Occurrence of arbuscular mycorrhiza on aged Eucalyptus

Adjoud-Sadadou

Halli-Hargas

2000

Mycorrhiza

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Arbuscular mycorrhiza have never been described within roots of aged Eucalyptus despite the fact that Eucalyptus seedlings do form both endomycorrhiza and ectomycorrhiza early during their developement. In the present study, all the structures of arbuscular mycorrhiza were observed within roots of four Eucalyptus species of 15, 17 and more than 50 years old at three different sites in northern Algeria. Arbuscular mycorrhiza frequency was assessed in roots of 15-years old Eucalyptus camaldulensis species, during two periods in 2 consecutive years (July and November of 1996 and 1997). Intensity of root colonization was dependent on the time of sampling and attained 42% in July 1997.

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Section: Resultsmentioning

confidence: 99%

Occurrence of arbuscular mycorrhiza on aged Eucalyptus

Adjoud-Sadadou

Halli-Hargas

2000

Mycorrhiza

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“…Identification of AM fungi-To determine the species of AM fungi colonizing the two plant species (Balduina and Pityopsis) exhibiting the highest levels of colonization, roots of these species were used as the sole source of inoculum to infect ISU greenhouse-grown sorghum plants (Liberta, Anderson, and Dickman, 1983). Soil collected from the study site was autoclaved twice for 90 min and 500 g of autoclaved soil was placed in a 15-cm plastic pot.…”

Section: Species-mentioning

confidence: 99%

Effects of fire on sandhill herbs: nutrients, mycorrhizae, and biomass allocation

Anderson

Menges

1997

American J of Botany

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Differences in growth responses, tissue and soil inorganic nutrients, and mycorrhizal relationships of four herbaceous species were studied on burned and unburned sandhill sites in south-central Florida, USA. Three species, (Aristida stricta, Liatris tenuifolia var. laevigata, and Pityopsis graminifolia) responded positively to conditions following the burn by increased vegetative growth and flowering. The fourth species, Balduina angustifolia, is a fire-sensitive biennial and its first-year rosettes were, with an occasional exception, unable to survive or resprout following fire. Availability of all soil inorganic nutrients examined (Ca, K, Mg, and P) was low, as were total nitrogen, soil organic matter, and pH. There was a slight nutrient pulse of phosphorus into the soil following burning. For two species (Aristida and Liatris), shoot tissue concentrations of several inorganic nutrients (especially N and P) were higher on the burned site than the unburned site following burning. These differences generally dissipated over time since burning. The high concentration of tissue nutrients postburn followed by a decline on the burned site may result from rapid nutrient uptake after fire and dilution of this concentration following restoration of plant mass. Despite low levels of soil inorganic nutrients, including phosphorus, mycotrophy was absent or weakly developed among the herbaceous species examined, except for the tap-rooted Balduina angustifolia. Colonization of host plants by vesicular mycorrhizal fungi was unaffected by burning. Mycorrhizal inoculum potentials of sandhill soil were extremely low, varying seasonally from (mean +/- 1 SE) 0.3 +/- 0.2 to 3.8 +/- 0.7%.

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Aspects of the Mycorrhizal Ecology of Prairie Dropseed, Sporobolus Heterolepis (Poaceae)

Ebbers

Anderson

Liberta

1987

American J of Botany

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Vesicular‐arbuscular mycorrhizal (VAM) fungal colonization of prairie dropseed and rhizosphere spore abundance were sampled seasonally at two sites in Illinois. At Goose Lake Prairie (GLP), Gaussian ordination of 49 vegetation stands, using plant cover data for 40 species, assigned stands x‐vector values and ordered them along a soil moisture‐nutrient gradient. Prairie dropseed cover data plotted over ordered stands yielded a significant Gaussian curve across a relatively narrow gradient segment. In contrast, colonization and spore abundance had significant negative linear correlations with stand x‐vector values that decreased from the drier, low‐nutrient portion of the gradient to the wetter, high‐nutrient sector. Variation in spore abundance suggested that no VAM fungal species responded to environmental gradient conditions in a manner similar to that of prairie dropseed. The differential responses of host and VAM mycobionts across the gradient suggest that their respective success may be partially independently determined or limited by different parameters. Also, the generally ubiquitous VAM fungal distributions suggest that the host may be more sensitive to gradient conditions than its mycobiont associates. Colonization and spore abundance at GLP were significantly negatively correlated with available Ca and Mg, and pH. Spore abundance was significantly positively correlated with available K. Neither colonization nor spore abundance were significantly correlated with available P, total N, or organic matter. Seasonally, patterns of VAM colonization and rhizosphere spore abundance varied, having significant positive correlations at GLP and Weston Cemetery Prairie (WCP) in some seasons but not others. In general, colonization levels were highest in fall 1983 for GLP and fall 1984 for WCP. For 1984, increasing colonization was observed from spring (WCP) or summer (GLP) to fall.

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Vesicular-Arbuscular Mycorrhiza Fragments as a Means of Endophyte Identification at Hydrophytic Sites

Cited by 12 publications

References 0 publications

Occurrence of arbuscular mycorrhiza on aged Eucalyptus

Occurrence of arbuscular mycorrhiza on aged Eucalyptus

Effects of fire on sandhill herbs: nutrients, mycorrhizae, and biomass allocation

Aspects of the Mycorrhizal Ecology of Prairie Dropseed, Sporobolus Heterolepis (Poaceae)

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