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Title: Carbon constrains fungal endophyte assemblages along the timberline

Journal Article · · Environmental Microbiology
 [1];  [2];  [3];  [4];  [1];  [4];  [4]
  1. State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences 71 East Beijing Road Nanjing 210008 China, University of Chinese Academy of Sciences Beijing 100049 China
  2. Argonne National Laboratory Institute for Genomics and Systems Biology Argonne IL 60439 USA
  3. Argonne National Laboratory Institute for Genomics and Systems Biology Argonne IL 60439 USA, Departments of Ecology and Evolution, Surgery University of Chicago Chicago IL 60637 USA, Marine Biological Laboratory 7 MBL Street Woods Hole MA 02543 USA, College of Environmental and Resource Sciences Zhejiang University Hangzhou 310058 China
  4. State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences 71 East Beijing Road Nanjing 210008 China
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Summary The alpha diversity of foliar fungal endophytes ( FEs ) in leaves of B etula ermanii in a subalpine timberline ecotone on C hangbai M ountain, C hina increased with elevation. There were also significant differences in beta diversity along the elevation gradient. Among the environmental variables analysed, leaf carbon significantly increased with elevation, and was the most significant environmental factor that constrained the alpha and beta diversity in the FE communities. Tree height and the cellulose, lignin, and carbon/nitrogen ratio of the leaves also affected the FE assemblages. When controlled for the effects of elevation, leaf carbon was still the main driver of changes in evenness, Shannon diversity and FE community composition. The results offered clues of the carbon acquisition strategy of the foliar FEs across this cold terrain. There was strong multicollinearity between both annual precipitation and temperature, with elevation (| P earson r| > 0.986), so the effects of these climatic variables were impossible to separate; however, they may play key roles, and the direct effects of both warrant further investigation. As pioneer decomposers of leaf litter, variations in diversity and community composition of FE measured here may feedback and influence carbon cycling and dynamics in these forest ecosystems.

Sponsoring Organization:
USDOE
Grant/Contract Number:
DE‐AC02‐06CH11357
OSTI ID:
1401174
Journal Information:
Environmental Microbiology, Journal Name: Environmental Microbiology Vol. 18 Journal Issue: 8; ISSN 1462-2912
Publisher:
Wiley-BlackwellCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 27 works
Citation information provided by
Web of Science

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