文献类型：期刊文献

英文题名：Thinning Alters the Network Patterns and Keystone Taxa of Rhizosphere Soil Microbial Community in Chinese Fir Plantation

作者：Ye, Yuqian[1,2] Sun, Xiaodan[1,3] Zhao, Jiahao[1] Chen, Xinli[4] Wang, Meiquan[1] Li, Junjie[1] Guan, Qingwei[1]

第一作者：Ye, Yuqian

机构：[1] College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037, China; [2] Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, 100091, China; [3] Marine Ecology Research Center, First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China; [4] Department of Renewable Resources, University of Alberta, Edmonton, AB, Canada

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220470585)

语种：英文

外文关键词：Arches - Bacteria - Ecosystems - Forestry - Fungi

摘要：Microorganisms play a crucial role in controlling forest ecosystem functioning, but their composition and structure can be affected by management practices. Although the response of the microbial community to thinning has been well studied, the effect of thinning on the co-occurrence patterns of soil bacteria and fungi, especially in the rhizosphere soil, remains unclear. In this study, we investigated the bacterial and fungal communities in rhizosphere and bulk soil of Chinese fir (Cunninghamia lanceolata [Lamb.] Hook) plantations under different thinning intensities, including control (CK, 0%), light-intensity thinning (LIT, 30%), moderate-intensity thinning (MIT, 50%), and high-intensity thinning (HIT, 70%). Thinning decreased the soil microbial diversity, with the exception of rhizosphere bacteria, which increased after thinning. Thinning-sensitive operational taxonomic units (tsOTUs) were taxonomically diverse, and each thinning intensity harbored a specific tsOTU subset. The top three modules in the meta-co-occurrence network were dominated by the phyla Acidobacteria, Actinobacteria, Bacteroidetes, Chloroflexi, Ascomycota, and Basidiomycota, which showed little overlap and were affected by thinning. In addition, we identified sixteen and three thinning-sensitive keystone taxa in the rhizosphere and bulk soil, respectively. The highest abundance of these genes was detected in HIT in the rhizosphere soil. Together, we demonstrated that thinning altered the composition, co-occurrence network, and keystone taxa of soil bacteria and fungi. These findings indicated detectable rhizosphere soil community changes of largely unknown consequences induced by thinning, and hence rhizosphere soils should be considered in future study. ? 2022, The Authors. All rights reserved.