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Type: Journal article
Title: The relationship between the diversity of arbuscular mycorrhizal fungi and grazing in a meadow steppe
Author: Ba, L.
Ning, J.
Wang, D.
Facelli, E.
Facelli, J.
Yang, Y.
Zhang, L.
Citation: Plant and Soil: international journal on plant-soil relationships, 2012; 352(1-2):143-156
Publisher: Kluwer Academic Publ
Issue Date: 2012
ISSN: 0032-079X
Statement of
Lei Ba, Jiaxu Ning, Deli Wang, Evelina Facelli, José M. Facelli, Yaning Yang, Lichao Zhang
Abstract: Aims: To study the relationship between changes in soil properties and plant community characters produced by grazing in a meadow steppe grassland and the composition and diversity of spore-producing arbuscular mycorrhizal fungi (AMF). Methods: A field survey was carried out in a meadow steppe area with a gradient of grazing pressures (a site with four grazing intensities and a reserve closed to grazing). The AMF community composition (characterized by spore abundance) and diversity, the vegetation characters and soil properties were measured, and root colonization by AMF was assessed. Results: AMF diversity (richness and evenness) was higher under light to moderate grazing pressure and declined under intense grazing pressures. Results of multiple regressions indicated that soil electrical conductivity was highly associated with AMF diversity. The variation in AMF diversity was partially associated to the density of tillers of the dominant grass (Leymus chinensis), the above and below-ground biomass and the richness of the plant community. Conclusions: We propose that the relationship between plants and AMF is altered by environmental stress (salinity) which is in turn influenced by animal grazing. Direct and indirect interactions between vegetation, soil properties, and AMF community need to be elucidated to improve our ability to manage these communities. © 2011 Springer Science+Business Media B.V.
Keywords: Arbuscular mycorrhizal fungi
Plant community character
Soil property
Rights: © Springer Science+Business Media B.V. 2011
DOI: 10.1007/s11104-011-0985-6
Appears in Collections:Agriculture, Food and Wine publications
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