Journal
MYCORRHIZA
Volume 20, Issue 4, Pages 281-287Publisher
SPRINGER
DOI: 10.1007/s00572-009-0287-5
Keywords
Mycobiont; Kobresia; Alpine meadow; Dauciform root; ITS rDNA
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Funding
- National Science Foundation for Distinguished Young Scholars of China [30525002]
- National Natural Science Foundation of China and Yunnan Provincial Government [U0836604]
- National Basic Research Program of China [2009cb522300]
- Chinese Academy of Sciences [kscx2-YW-G-025]
- National Science Foundation of the USA [DEB-0321846]
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The diversity of ectomycorrhizal fungi (EMF) on Kobresia filicina and Kobresia capillifolia in an alpine meadow in China's southwestern mountains, one of the word's hotspots of biodiversity, was estimated based on internal transcribed spacer rDNA sequence analysis of root tips. Seventy EMF operational taxonomical units (OTUs) were found in the two plant species. Dauciform roots with EMF were detected in species of Kobresia for the first time. OTU richness of EMF was high in Tomentella/Thelophora and Inocybe, followed by Cortinarius, Sebacina, the Cenococcum geophilum complex, and Russula. Tomentella/Thelophora and Inocybe were general and dominant mycobiont genera of the two sedges. Besides the C. geophilum complex, the ascomycete components Hymenoscyphus and Lachnum were also detected on the two plants. Alpine plants in different geographical regions share similar main genera and/or families of EMF while harboring predominantly different mycobiont species; most of the members detected by us have not been found elsewhere. Significant differences in the profile of EMF occurrences were not found between the two plant species and among the three sampling seasons in our sample size.
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