期刊
NEW PHYTOLOGIST
卷 209, 期 3, 页码 1196-1207出版社
WILEY
DOI: 10.1111/nph.13690
关键词
alpine ecosystems; bacterial and fungal soil diversity; biotrophic fungi; core community; keystone species; microbial biogeography; mountain grasslands
资金
- Agence Nationale de la Recherche (ANR) - France [ANR-13-ISV7-0004]
- Executive Agency for the Financing of High Education, Research, Development and Innovation (UEFISCDI) - Romania (Project ODYSSEE, PN-II-ID-JRP-RO-FR) [15/01.01.2014]
- Agence Nationale de la Recherche (ANR) [ANR-13-ISV7-0004] Funding Source: Agence Nationale de la Recherche (ANR)
The effect of plant species composition on soil microbial communities was studied at the multiregional level. We compared the soil microbial communities of alpine natural grasslands dominated by Carex curvula and anthropogenic subalpine pastures dominated by Nardus stricta. We conducted paired sampling across the Carpathians and the Alps and used Illumina sequencing to reveal the molecular diversity of soil microbes. We found that bacterial and fungal communities exhibited contrasting regional distributions and that the distribution in each grassland is well discriminated. Beta diversity of microbial communities was much higher in C. curvula grasslands due to a marked regional effect. The composition of grassland-type core microbiomes suggest that C. curvula, and N. stricta to a lesser extent, tend to select a cohort of microbes related to antibiosis/exclusion, pathogenesis and endophytism. We discuss these findings in light of the postglacial history of the studied grasslands, the habitat connectivity and the disturbance regimes. Human-induced disturbance in the subalpine belt of European mountains has led to homogeneous soil microbial communities at large biogeographical scales. Our results confirm the overarching role of the dominant grassland plant species in the distribution of microbial communities and highlight the relevance of biogeographical history.
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