Linking molecular deadwood-inhabiting fungal diversity and community dynamics to ecosystem functions and processes in Central European forests  

作　　者：Björn Hoppe Witoon Purahong Tesfaye Wubet Tiemo Kahl Jürgen Bauhus Tobias Arnstadt Martin Hofrichter François Buscot Dirk Krüger 

机构地区：[1]Department of Soil Ecology,UFZ-Helmholtz Centre for Environmental Research,Theodor-Lieser-Str.4,D-06120 Halle(Saale),Germany [2]Faculty of Environment and Natural Resources,Chair of Silviculture,University of Freiburg,Tennenbacherstr.4,D-79085 Freiburg i.Brsg.,Germany [3]Technical University of Munich,Chair for Soil Science,Ingolstädter Landstr.1,D-85758 Oberschleissheim,Germany [4]German Centre for Integrative Biodiversity Research(iDiv),Halle-Jena-Leipzig,Deutscher Platz 5e,D-04103 Leipzig,Germany [5]Department of Bio-and Environmental Sciences,Technical University of Dresden,International Institute(IHI)Zittau,Markt 23,D-02763 Zittau,Germany

出　　处：《Fungal Diversity》2016年第2期367-379,共13页真菌多样性（英文）

基　　金：the DFG Priority Program 1374 on BInfrastructure-BiodiversityExploratories(KR 3587/1-1,KR 3587/3-2,BA 2821/9-2,BU 941/17-1,HO 1961/5-1,HO 1961/5-2)。

摘　　要：Fungi play vital roles in the decomposition of deadwood due to their secretion of various enzymes that break down plant cell-wall complexes.The compositions of woodinhabiting fungal(WIF)communities change over the course of the decomposition process as the remaining mass of wood decreases and both abiotic and biotic conditions of the wood significantly change.It is currently not resolved which substrate-related factors govern these changes in WIF communities and whether such changes influence the deadwood decomposition rate.Here we report a study on fungal richness and community structure in deadwood of Norway spruce and European beech in temperate forest ecosystems using 454 pyrosequencing.Our aims were to disentangle the factors that correspond to WIF community composition and to investigate the links between fungal richness,taxonomically-resolved fungal identity,and microbial-mediated ecosystem functions and processes by analyzing physico-chemical wood properties,lignin-modifying enzyme activities and wood decomposition rates.Unlike fungal richness,we found significant differences in community structure between deadwood of different tree species.The composition of WIF communities was related to the physico-chemical properties of the deadwood substrates.Decomposition rates and the activities of ligninmodifying enzymes were controlled by the succession of the fungal communities and competition scenarios rather than fungal OTU richness.Our results provide further insights into links between fungal community structure and microbialmediated ecosystem functions and processes.

关 键 词：Ecosystem processes Enzyme activity Wood decay Physico-chemical wood properties ASCOMYCETES BASIDIOMYCETES PYROSEQUENCING 

分 类 号：S71[农业科学—林学]