Elevational dynamics in soil microbial co-occurrence:Disentangling biotic and abiotic influences on bacterial and fungal networks on Mt.Seorak  

作　　者：Zhi Yu Changbae Lee Dorsaf Kerfahi Nan Li Naomichi Yamamoto Teng Yang Haein Lee Guangyin Zhen Yenan Song Lingling Shi Ke Dong 

机构地区：[1]Department of Environmental Health Sciences,Graduate School of Public Health,Seoul National University,Seoul 08826,Republic of Korea [2]Department of Forestry,Environment and Systems,Kookmin University,Seoul 02707,Republic of Korea [3]School of Natural Sciences,Department of Biological Sciences,Keimyung University,Daegu 42601,Republic of Korea [4]Key Laboratory of Climate,Resources and Environment in Continental Shelf Sea and Deep Sea of Department of Education of Guangdong Province,Department of Oceanography,Key Laboratory for Coastal Ocean Variation and Disaster Prediction,College of Ocean and Meteorology,Guangdong Ocean University,Zhanjiang 524088,China [5]Institute of Health and Environment,Seoul National University,Seoul 08826,Republic of Korea [6]State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China [7]Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration,School of Ecological and Environmental Sciences,East China Normal University,Shanghai 200241,China [8]Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,School of Physics and Electronic Science and Joint Institute of Advanced Science and Technology,East China Normal University,Shanghai 200241,China [9]Geo-Biosphere Interactions,Department of Geosciences,Faculty of Sciences,University of Tuebingen,Tuebingen,Germany [10]Life Science Major,Kyonggi University,Suwon 16227,Republic of Korea

出　　处：《Soil Ecology Letters》2024年第4期85-98,共14页土壤生态学快报(英文)

基　　金：supported by the National Research Foundation of Korea(NRF)grant funded by the Korea Government(MSIP)(Grant Nos.NRF-2018R1C1B6007755 and NRF-2022R1F1A1066643);supported by a grant(No.20SCIP-C158976-01)from Construction Technology Research Program funded by Ministry of Land,Infrastructure and Transport of Korean Government;the Guangxi Natural Science Foundation(Grant No.2018GXNSFDA281006);the National Natural Science Foundation of China(Grant No.41966005);the‘One Hundred Talents’Project of Guangxi(Grant No.6020303891251).

摘　　要：Fungi outperformed bacterial in maintaining the microbial co-occurrence networks.Fungi showed different elevational network co-occurrence pattern from bacteria.Distinct biotic/abiotic factors influenced bacterial and fungal network dynamics.The interplay between soil micro-organisms in mountain ecosystems critically influences soil biogeochemical cycles and ecosystem processes.However,factors affecting the co-occurrence patterns of soil microbial communities remain unclear.In an attempt to understand how these patterns shift with elevation and identify the key explanatory factors underpinning these changes,we studied soil bacterial and fungal co-occurrence networks on Mt.Seorak,Republic of Korea.Amplicon sequencing was used to target the 16S rRNA gene and ITS2 region for bacteria and fungi,respectively.In contrast to bacteria,we found that fungi were predominantly situated in the core positions of the network,with significantly weakened co-occurrence with increasing elevation.The different co-occurrence patterns of fungal and bacterial communities could be resulted from their distinct responses to various environments.Both abiotic and biotic factors contributed significantly to shaping co-occurrence networks of bacterial and fungal communities.Fungal richness,bacterial community composition(indicated by PCoA1),and soil pH were the predominant factors influencing the variation in the entire microbial co-occurrence network.Biotic factors,such as the composition and diversity of bacterial communities,significantly influenced bacterial co-occurrence networks.External biotic and abiotic factors,including climatic and vegetative conditions,had a significant influence on fungal co-occurrence networks.These findings enhance our understanding of soil microbiota co-occurrences and deepen our knowledge of soil microbiota responses to climatic changes across elevational gradients in mountain ecosystems.

关 键 词：co-occurrence network soil microbial community elevational gradient soil pH plant vegetation climate 

分 类 号：S154.3[农业科学—土壤学]