Higher stochasticity in comammox Nitrospira community assembly in upland soils than the adjacent paddy soils at a regional scale
文献类型： 外文期刊
作者： Feng, Mengmeng 1 ; Lin, Yongxin 1 ; He, Zi-Yang 2 ; Hu, Hang-Wei 2 ; Jin, Shengsheng 1 ; Liu, Jia 3 ; Wan, Song 1 ; Cheng, Yuheng 1 ; He, Ji-Zheng 1 ;
作者机构： 1.Fujian Normal Univ, Fujian Prov Key Lab Subtrop Resources & Environm, Fuzhou 350117, Peoples R China
2.Univ Melbourne, Fac Sci, Sch Agr Food & Ecosyst Sci, Melbourne, Vic 3010, Australia
3.Jiangxi Acad Agr Sci, Soil & Fertilizer & Resources & Environm Inst, Nanchang 330200, Peoples R China
关键词： Agricultural soils; Comammox Nitrospira; Community assembly; Nitrification; Stochastic processes
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）
ISSN： 0048-9697
年卷期： 2024 年 921 卷
页码：
收录情况： SCI
摘要： Understanding the assembly mechanisms of microbial communities, particularly comammox Nitrospira, in agroecosystems is crucial for sustainable agriculture. However, the large-scale distribution and assembly processes of comammox Nitrospira in agricultural soils remain largely elusive. We investigated comammox Nitrospira abundance, community structure, and assembly processes in 16 paired upland peanuts and water-logged paddy soils in south China. Higher abundance, richness, and network complexity of comammox Nitrospira were observed in upland soils than in paddy soils, indicating a preference for upland soils over paddy soils among comammox Nitrospira taxa in agricultural environments. Clade A.2.1 and clade A.1 were the predominant comammox Nitrospira taxa in upland and paddy soils, respectively. Soil pH was the most crucial factor shaping comammox Nitrospira community structure. Stochastic processes were found to predominantly drive comammox Nitrospira community assembly in both upland and paddy soils, with deterministic processes playing a more important role in paddy soils than in upland soils. Overall, our findings demonstrate the higher stochasticity of comammox Nitrospira in upland soils than in the adjacent paddy soils, which may have implications for autotrophic nitrification in acidic agricultural soils.
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