文献类型：期刊文献

英文题名：From pattern to process: species and functional diversity in fungal endophytes of Abies beshanzuensis

作者：Yuan, Zhi-Lin[1,2] Rao, Long-Bing[1] Chen, Yi-Cun[1] Zhang, Chu-Long[2] Wu, You-Gui[3]

第一作者：袁志林;Yuan, Zhi-Lin

通信作者：Yuan, ZL[1]

机构：[1]Chinese Acad Forestry, Inst Subtrop Forestry, Fuyang, Peoples R China;[2]Zhejiang Univ, Inst Biotechnol, Minist Agr, Key Lab Mol Biol Crop Pathogens & Insects, Hangzhou, Zhejiang, Peoples R China;[3]Fengyangshan Baishanzu Natl Nat Reserve, Qingynan, Peoples R China

年份：2011

卷号：115

期号：3

起止页码：197-213

外文期刊名：FUNGAL BIOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000289023800001)】；

基金：The research has been financially supported by Non-profit Sector Special Research Fund of Chinese Academy of Forestry (grant number: RISF6902). We are very grateful to Professor Thomas Sieber (ETH Zurich, Switzerland) for his informative suggestions in experimental design and some linguistic corrections. We would like to express many thanks to two anonymous reviewers and editor for their valuable comments that enable us to improve the manuscript.

语种：英文

外文关键词：Antagonism; White rot fungi; Decomposer; Functional diversity; Helotiales; Intra-specific variation; Laccase genes

摘要：The biodiversity functional relationship in fungal ecology was recently developed and debated, but has rarely been addressed in endophytes. In this study, an integrative culture system was designed to capture a rich fungal consortium from the conifer Abies beshanzuensis. Results indicate an impressive diversity of fungal lineages (a total of 84 taxa classified in Dikarya) and a relatively high proportion of hitherto unknown species (27.4 %). The laccase gene was used as a functional marker due to its involvement in lignocellulose degradation. Remarkable diversity of laccase genes was found across a wide range of taxa, with at least 35 and 19 distinct sequences in ascomycetes and basidiomycetes respectively, were revealed. Many groups displayed variable ability to decompose needles. Furthermore, many ascomycetes, including three volatile-producing Muscodor species (Xylariaceae), showed the ability to inhibit pathogens. Notably, most laccase-producing species showed little or no antibiosis and vice versa. Clavicipitalean and ustilaginomycetous fungi, specifically toxic to insects, were inferred from taxonomic information. Intra-specific physiological variation in Pezicula sporulosa, a second dominant species, was clearly high. We conclude that a suite of defensive characteristics in endophytes contributes to improving host fitness under various stresses and that a diversity of laccase genes confers an ecological advantage in competition for nutrients. Intra-specific diversity may be of great ecological significance for ecotypic adaptation. These findings suggest a fair degree of functional complementarity rather than redundancy among endemic symbionts of natural plant populations. (C) 2010 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.