作者：Fei Ren 1 , Wei Dong 2 , Hui Sun 3 ,Dong-Hui Yan 4*
单位：1.Experimental Center of Forestry in North China, Chinese Academy of Forestry; 2.China Electric Power Research Institute; 3.Collaborative Innovation Center of Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University; 4.The Key Laboratory of Forest Protection affifiliated to State Forestry Administration of China, Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry
基金：Fundamental Research Funds for the Central Non-profifit Research Institution of Chinese Academy of Forestry (project CAFYBB2017MA019).
摘要：Endophytic fungi exist in all known plants and play an important role for plant growth and health. As an important forest tree the Jingbai pear (the best quality cultivar of Pyrus ussuriensi Maxim. ex Rupr.) has great ecological as well as economic value in north China. However, the mycobiota of the pear tree is still unknown. In this study, the fungal communities in different organs of the tree and in rhizosphere soils were investigated by Illumina Miseq sequencing of ITS rDNA. For organs, the roots had the highest fungal richness and diversity, while the flflowers had the lowest richness and diversity. The results demonstrated that each of the organs investigated harbored a distinctive fungal assemblage. Overall, Ascomycota was the most abundant phyla, followed by Basidiomycota and Zygomycota. Fungal communities from the different soils also differed from each other. The redundancy analysis (RDA) showed that fungal community structure correlated signifificantly with soil temperature, soil pH, soil nitrogen and soil carbon contents. The results indicate that plant organs, site conditions and soil properties may have important inflfluences on the endophytic fungal community structure associated with Jingbai pear trees.
关键词：endophytic fungi; community diversity and structure; Jingbai pear trees