Soil Microbial Community Assembly and Interactions Are Constrained by Nitrogen and Phosphorus in Broadleaf Forests of Southern China

文献类型： 外文期刊

第一作者： Zhao, Mengxin

作者： Zhao, Mengxin;Zhao, Mengxin;Sheng, Yuyu;Lu, Hui;Li, Diqiang;Zhang, Yuguang;Zhao, Mengxin;Sheng, Yuyu;Lu, Hui;Li, Diqiang;Zhang, Yuguang;Zhao, Mengxin;Cheng, Jingmin;Qi, Qi;Zhou, Jizhong;Cong, Jing;Ning, Daliang;Zhou, Jizhong;Ning, Daliang;Zhou, Jizhong;Wyckoff, Kristen N.;Deng, Ye;Zhou, Jizhong

作者机构：

关键词： soil microbial community; microbial assembly process; functional gene; subtropical forest; tropical forest

期刊名称：FORESTS （ 影响因子：2.633； 五年影响因子：2.804 ）

ISSN：

年卷期： 2020 年 11 卷 3 期

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收录情况： SCI

摘要： Subtropical and tropical broadleaf forests play important roles in conserving biodiversity and regulating global carbon cycle. Nonetheless, knowledge about soil microbial diversity, community composition, turnover and microbial functional structure in sub- and tropical broadleaf forests is scarce. In this study, high-throughput sequencing was used to profile soil microbial community composition, and a micro-array GeoChip 5.0 was used to profile microbial functional gene distribution in four sub- and tropical broadleaf forests (HS, MES, HP and JFL) in southern China. The results showed that soil microbial community compositions differed dramatically among all of four forests. Soil microbial diversities in JFL were the lowest (5.81-5.99) and significantly different from those in the other three forests (6.22-6.39). Furthermore, microbial functional gene interactions were the most complex and closest, likely in reflection to stress associated with the lowest nitrogen and phosphorus contents in JFL. In support of the importance of environmental selection, we found selection (78-96%) dominated microbial community assembly, which was verified by partial Mantel tests showing significant correlations between soil phosphorus and nitrogen content and microbial community composition. Taken together, these results indicate that nitrogen and phosphorus are pivotal in shaping soil microbial communities in sub- and tropical broadleaf forests in southern China. Changes in soil nitrogen and phosphorus, in response to plant growth and decomposition, will therefore have significant changes in both microbial community assembly and interaction.

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