globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13820
Scopus记录号: 2-s2.0-85028625898
论文题名:
Microbial functional diversity covaries with permafrost thaw-induced environmental heterogeneity in tundra soil
作者: Yuan M.M.; Zhang J.; Xue K.; Wu L.; Deng Y.; Deng J.; Hale L.; Zhou X.; He Z.; Yang Y.; Van Nostrand J.D.; Schuur E.A.G.; Konstantinidis K.T.; Penton C.R.; Cole J.R.; Tiedje J.M.; Luo Y.; Zhou J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期:1
起始页码: 297
结束页码: 307
语种: 英语
英文关键词: functional gene array ; geochip ; permafrost thaw ; soil microbial functional diversity ; tussock tundra
Scopus关键词: biogeochemical cycle ; functional group ; microbial community ; permafrost ; soil biota ; species diversity ; terrestrial environment ; thawing ; tundra soil ; tussock grassland ; Alaska ; United States ; Prokaryota ; Tracheophyta ; carbon ; Alaska ; chemistry ; climate change ; fungus ; metabolism ; microbiology ; permafrost ; temperature ; tundra ; Alaska ; Carbon ; Climate Change ; Fungi ; Permafrost ; Soil Microbiology ; Temperature ; Tundra
英文摘要: Permafrost soil in high latitude tundra is one of the largest terrestrial carbon (C) stocks and is highly sensitive to climate warming. Understanding microbial responses to warming-induced environmental changes is critical to evaluating their influences on soil biogeochemical cycles. In this study, a functional gene array (i.e., geochip 4.2) was used to analyze the functional capacities of soil microbial communities collected from a naturally degrading permafrost region in Central Alaska. Varied thaw history was reported to be the main driver of soil and plant differences across a gradient of minimally, moderately, and extensively thawed sites. Compared with the minimally thawed site, the number of detected functional gene probes across the 15–65 cm depth profile at the moderately and extensively thawed sites decreased by 25% and 5%, while the community functional gene β-diversity increased by 34% and 45%, respectively, revealing decreased functional gene richness but increased community heterogeneity along the thaw progression. Particularly, the moderately thawed site contained microbial communities with the highest abundances of many genes involved in prokaryotic C degradation, ammonification, and nitrification processes, but lower abundances of fungal C decomposition and anaerobic-related genes. Significant correlations were observed between functional gene abundance and vascular plant primary productivity, suggesting that plant growth and species composition could be co-evolving traits together with microbial community composition. Altogether, this study reveals the complex responses of microbial functional potentials to thaw-related soil and plant changes and provides information on potential microbially mediated biogeochemical cycles in tundra ecosystems. © 2017 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110608
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Institute for Environmental Genomics, University of Oklahoma, Norman, OK, United States; Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, United States; University of Chinese Academy of Sciences, Beijing, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China; School of Minerals Processing and Bioengineering, Central South University, Changsha, China; School of Environment, Tsinghua University, Beijing, China; Center for Ecosystem Sciences and Society, Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, United States; School of Civil and Environmental Engineering, School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, United States; College of Integrative Sciences and Arts, Arizona State University, Mesa, AZ, United States; Center for Microbial Ecology, Michigan State University, East Lansing, MI, United States; School of Civil Engineering and Environmental Sciences, University of Oklahoma, Norman, OK, United States; Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, United States

Recommended Citation:
Yuan M.M.,Zhang J.,Xue K.,et al. Microbial functional diversity covaries with permafrost thaw-induced environmental heterogeneity in tundra soil[J]. Global Change Biology,2018-01-01,24(1)
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