Assembly processes of rare and abundant microbial taxa are closely related to bacterial and fungal functionality during desert vegetation reestablishment

文献类型： 外文期刊

第一作者： Yu, Zhouchang

作者： Yu, Zhouchang;Zhang, Wei;Duo, Pian;Zhang, Ying;Tian, Xingfang;Sun, Lin;Gu, Yuzheng;Zhang, Junhong;Song, Jiaxing;Sailike, Ahejiang;Liang, Yujie;Fu, Rong;Yang, Peizhi;Duo, Pian;Xie, Zhiguo

作者机构：

关键词： deterministic processes; metabolic function; microbial community assembly; rare microbial taxa; revegetation; stochastic processes

期刊名称：PEDOSPHERE （ 影响因子：7.3； 五年影响因子：6.2 ）

ISSN： 1002-0160

年卷期： 2025 年 35 卷 3 期

页码：

收录情况： SCI

摘要： Effective vegetation reconstruction plays a vital role in the restoration of desert ecosystems. However, in reconstruction of different vegetation types, the community characteristics, assembly processes, and functions of different soil microbial taxa under environmental changes are still disputed, which limits the understanding of the sustainability of desert restoration. Hence, we investigated the soil microbial community characteristics and functional attributes of conservation of soil microbial composition but highlighted decreased microbial diversity in TS. Meanwhile, the abundance of rare taxa and microbial community stability in TS improved. Heterogeneous and homogeneous selection determined the assembly of rare and abundant bacterial taxa, respectively, with both being significantly influenced by soil moisture. In contrast, fungal communities displayed stochastic processes and exhibited sensitivity to soil nutrient conditions. Furthermore, our investigation revealed a noteworthy augmentation in bacterial metabolic functionality in TS, aligning with improved vegetation restoration and the assemblage of abundant bacterial taxa. However, within nutrient-limited soils (GD, DS, and AF), the assembly dynamics of rare fungal taxa assumed a prominent role in augmenting their metabolic capacity and adaptability to desert ecosystems. These results highlighted the variations in the assembly processes and metabolic functions of soil microorganisms during vegetation reestablishment and provided corresponding theoretical support for

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