Differential contributions of abundant and rare bacterial subcommunities assembly to soil carbon metabolism across soil profiles in paddy ecosystem
文献类型： 外文期刊
作者： Ma, Shiyu 1 ; Li, Guilong 2 ; Li, Pengfa 4 ; Liu, Jia 3 ; Xu, Shuxia 1 ; Zhang, Shimin 1 ; Wu, Meng 2 ;
作者机构： 1.Henan Agr Univ, Coll Life Sci, Zhengzhou 450046, Peoples R China
2.Chinese Acad Sci, Inst Soil Sci, Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
3.Jiangxi Acad Agr Sci, Soil & Fertilizer & Resources & Environm Inst, Nanchang 330200, Peoples R China
4.Nanjing Agr Univ, Coll Life Sci, Dept Microbiol, Key Lab Microbiol Agr Environm,Minist Agr, Nanjing 210095, Peoples R China
5.Acad Sinica, Natl Engn & Technol Res Ctr Red Soil Improvement, Ecol Expt Stn Red Soil, Yingtan 335211, Peoples R China
6.95 Wenhua Rd, Zhengzhou 450002, Peoples R China
7.71 East Beijing Rd, Nanjing 210008, Peoples R China
关键词： Carbon metabolism; Soil organic carbon; Community assembly; Abundant taxa; Rare taxa
期刊名称：APPLIED SOIL ECOLOGY （ 影响因子：4.8； 五年影响因子：5.1 ）
ISSN： 0929-1393
年卷期： 2023 年 189 卷
页码：
收录情况： SCI
摘要： Microbes are important drivers of global carbon cycle and influence terrestrial biogeochemistry, but there is still limited information on the mechanisms that link the community assembly processes of abundant and rare bacterial subcommunities to soil carbon dynamics. To address this knowledge gap, we conducted a study on the assembly processes of abundant and rare bacterial subcommunities across soil profiles (0-10, 10-20, 20-40, 40-60 cm) in the paddy ecosystem. The results indicated that both abundant and rare bacterial subcommunities were controlled by stochastic processes, while deterministic processes contributed more to the assembly of rare bacterial subcommunity than to abundant bacterial subcommunity. The community assembly processes were significantly correlated with soil organic carbon (SOC) content, and the response of abundant and rare taxa to variations in SOC content varied widely. Additionally, the assembly processes of rare bacterial subcommunity contributed more significantly to soil carbon metabolism than those of abundant taxa. Our research highlighted how the assembly of abundant and rare bacterial subcommunities could have varying impacts on carbon metabolism across soil profiles, indicating a promising avenue for further investigation to better connect community assembly with ecosystem functions.
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