No plant functional diversity effects on foliar fungal pathogens in experimental tree communities

作     者：Lydia Hantsch Uwe Braun Josephine Haase Oliver Purschke Michael Scherer-Lorenzen Helge Bruelheide 

作者机构：Institute of BiologyGeobotany and Botanical GardenMartin Luther University Halle WittenbergAm Kirchtor 106108 Halle(Saale)Germany Department of Environmental Systems ScienceETH ZurichEcosystem ManagementInstitute of Terrestrial EcosystemsUniversitaetsstr.168092 ZurichSwitzerland German Centre for Integrative Biodiversity Research(iDiv)Halle-Jena-LeipzigDeutscher Platz 5e04103 LeipzigGermany Faculty of BiologyGeobotanyAlberts-Ludwigs University of FreiburgSchaenzlestr.179104 FreiburgGermany 

出 版 物：《Fungal Diversity》 (真菌多样性（英文）)

年 卷 期：2014年第66卷第3期

页      面：139-151页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：The research leading to these results also attracted funding from the European Union’s Seventh Framework Programme(FP7/2007-2013)under grant agreement no 265171,project FunDivEUROPE as well as of the BACCARA project,which received funding from the European Commission’s Seventh Framework Programme(FP7/2007-2013),under grant agreement no 226299.O.P.and H.B.also acknowledge the support of the German Centre for Integrative Biodiversity Research(iDiv)HalleJena-Leipzig,funded by the German Science Foundation(FZT 118) 

主　　题：Biodiversity-ecosystem functioning BIOTREE experiment Host defence traits Phylogenetic pattern Polyphenolics Tree species identity effects 

摘      要：Foliar fungal pathogens affect forest ecosystem processes by exerting highly species-specific impacts on growth and survival of *** many ecosystem processes in forests depend on functional diversity of specific tree species,a close relationship is expected between this and foliar fungal pathogen *** for such a relationship in the German tree diversity experiment BIOTREE(Bechstedt),we hypothesized that pathogen richness and pathogen load decline with increasing functional diversity of tree *** macro-and microscopic analyses,we assessed pathogen richness and load on 16 tree species in plots that,although differing in functional diversity,had the same tree species *** found no effects of functional diversity on pathogen richness or ***,we encountered strong species identity effects in plot species composition,as susceptible tree species contributed positively to each community’s pathogen richness and ***,testing for effects of particular leaf traits and geographical range size of host species revealed a significant effect of total leaf phenolics,which was unexpected as pathogen richness increased with increasing content in *** study showed that at the community level,host species’identity was more important for foliar fungal pathogen richness and load than the functional diversity of host *** positive relationship between pathogen richness and phenolics in leaves,along with the finding that pathogen richness is very much conserved in tree species,point to an evolutionary arms race between hosts and fungi resulting from fungi increasing their capacity to infect tree leaves and trees boosting their defences.