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Patterns and processes in endophyte ecology - studies in optimal and extreme habitats of European Beech to reveal the underlying principles

内生菌生态学的模式和过程 - 对欧洲山毛榉的最佳和极端栖息地的研究以揭示基本原理

基本信息

批准号：
245215303
负责人：
Privatdozent Dr. Derek Persoh
金额：
--
依托单位：
Arbeitsgruppe Geobotanik
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2013
资助国家：
德国
起止时间：
2012-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/245215303?language=en
关键词：
Patterns processes endophyte ecology studies

项目摘要

The European Beech (Fagus sylvatica) is one of the most important trees in Central Europe. Due to its tight interconnection with a myriad of micro- and macroscopic organisms the superorganism (holobiont) profoundly influences trophic interactions in forest ecosystems. However, still little is known about patterns and processes of these interconnections.In the present project, the principal investigators will assess diversity patterns of beech-leaf-inhabiting endophytic fungal diversity and their contribution to processes of litter decomposition. During their studies two contrasting habitats for European beech in the German Alps will be compared. In order to reduce the impact of random parameters, i.e. those not in focus of the study, two phytometer systems with young genetically similar beech trees will be installed at the upper beech tree line and at a temperate valley site. In addition, laboratory experiments will unravel the impact of altitude-dependent parameters (temperature, chemical composition of leaves and litter, diversity and composition of fungal communities) on litter decomposition processes by previously endophytic fungi. The project focuses on fundamental processes during fungal decomposition of beech leaf litter and driving forces during the development of fungal communities in litter and living leaves. Climate data as well as comprehensive data on plant fitness, leaf and litter biochemistry will be continuously assessed and provide the background for the central metagenome and (meta)transcriptome analyses. The integrative analyses of a broad spectrum of data will allow for causal connection of causes (altitude) with observed patterns (gene expression, diversity, composition and seasonal development of the fungal community) and processes (litter decomposition). Final microarray gene expression experiments will bridge the gap between taxonomic and functional diversity by analysing metabolic adaptations of decomposer fungi with an endophytic life stage on the transcriptomic level.

欧洲山毛榉（Fagus sylvatica）是中欧最重要的树木之一。由于它与无数的微观和宏观有机体紧密相连，超有机体（全生生物）深刻地影响着森林生态系统中的营养相互作用。然而，仍然知之甚少的模式和这些interconnections.In本项目中，主要研究人员将评估山毛榉叶栖息的内生真菌多样性的多样性模式和凋落物分解过程中的贡献。在他们的研究中，将比较德国阿尔卑斯山欧洲山毛榉的两个截然不同的栖息地。为了减少随机参数的影响，即那些不是研究的重点，两个植物计系统与年轻的遗传相似的山毛榉树将安装在上山毛榉树线和温带山谷网站。此外，实验室实验将揭示海拔相关参数（温度，树叶和凋落物的化学成分，真菌群落的多样性和组成）对以前的内生真菌凋落物分解过程的影响。该项目的重点是在真菌分解过程中的基本过程山毛榉叶凋落物和真菌群落的发展过程中的驱动力凋落物和活叶。气候数据以及关于植物适合度、叶片和凋落物生物化学的综合数据将得到持续评估，并为中央宏基因组和（Meta）转录组分析提供背景。对广泛的数据进行综合分析，可以将原因（海拔）与观察到的模式（真菌群落的基因表达、多样性、组成和季节性发展）和过程（凋落物分解）联系起来。最后的微阵列基因表达实验将弥合分类和功能多样性之间的差距，通过分析代谢适应的分解真菌与内生生命阶段的转录组水平。