Endophytic bacteria in the periglacial plant Potentilla fruticosa *** are influenced by habitat type

作     者：Wangchen Sonam Yongqin Liu Liangdong Guo Wangchen Sonam;Yongqin Liu;Liangdong Guo

作者机构：State Key Laboratory of Tibetan Plateau Earth SystemEnvironment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Center for the Pan-Third Pole EnvironmentLanzhou UniversityLanzhou 730000China State Key Laboratory of MycologyInstitute of MicrobiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Ecological Processes》 (生态过程（英文）)

年 卷 期：2023年第12卷第1期

页      面：791-805页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：funded by the National Natural Science Foundation of China(Grant Nos.91851207,42171138) the Second Tibetan Plateau Scientific Expedition and Research(STEP)Program(Grant No.2019QZKK0503) 

主　　题：Bacterial community Endophytic bacteria Periglacial plant Potentilla fruticosa var.albicans 

摘      要：Background Microbial communities in different plant compartments are relatively independent ***,the influence of environmental factors on the microbial community in different compartments of periglacial plants remains *** this study,we quantified the bacterial communities in the rhizosphere soil,as well as root and leaf endosphere compartments of a periglacial plant,Potentilla fruticosa ***,using high-throughput DNA ***,we evaluated the impacts of habitat types(glacier terminus zone,moraine ridge,and alpine meadow)on the bacterial community in different plant compartments of Potentilla fruticosa *** Our results showed that habitat type had a significant effect on the alpha diversity(Chao1 richness)of endophytic bacteria,but not on the rhizospheric *** community composition of rhizospheric and endophytic bacteria was significantly different across the three habitats,and habitat type had a greater effect on the endophytic bacteria than on rhizospheric *** contribution of rhizosphere soil to the root and leaf endophytes decreased with the transformation of habitats from glacier terminus zone to alpine *** contrast,host selection pressure sequentially increased from the glacier terminus zone to the moraine ridge to the alpine ***,we found that the bacterial co-occurrence network in the alpine meadow was more modular but had lower complexity and connectedness than that in the glacier terminus *** bacterial community was governed primarily by stochastic processes regardless of habitat *** This study reveals that the diversity and composition of endophytic bacteria associated with Potentilla fruticosa *** are more affected by habitat types than that of rhizospheric *** study also demonstrates that the assembly patterns and co-occurrence patterns of bacterial communities associated with Potentilla fruticosa *** vary by habitat type