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Soil texture contributes to shaping comammox Nitrospira communities in rice-wheat rotation soils

文献类型： 外文期刊

作者： Guo, Zhiying 1 ; Liu, Jie 1 ; Sun, Luyuan 2 ; Cui, Xiaodan 1 ; Ye, Guiping 5 ; Liu, Jia 6 ; Pan, Xianzhang 1 ; Lin, Yongxin 2 ;

作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China

2.Fujian Normal Univ, Fujian Prov Key Lab Subtrop Resources & Environm, Fuzhou 350117, Peoples R China

3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

4.Minist Nat Resources, Technol Innovat Ctr Ecol Monitoring & Restorat Pro, Geol Survey Jiangsu Prov, Nanjing 210018, Peoples R China

5.Minjiang Univ, Fuzhou Inst Oceanog, Fujian Key Lab Conservat & Sustainable Utilizat Ma, Fuzhou 350108, Peoples R China

6.Jiangxi Acad Agr Sci, Soil & Fertilizer & Resources & Environm Inst, Nanchang 330200, Peoples R China

关键词： Agriculture soils; Complete ammonia oxidation; Diversity; Niche differentiation; Soil particle sizes

期刊名称：EUROPEAN JOURNAL OF SOIL BIOLOGY （ 影响因子：3.7； 五年影响因子：3.7 ）

ISSN： 1164-5563

年卷期： 2024 年 122 卷

页码：

收录情况： SCI

摘要： Complete ammonia oxidizers (comammox Nitrospira) ) are intriguing discoveries that mark a significant milestone in the global nitrogen cycle. While numerous soil physiochemical variables have been identified as key influencers of comammox Nitrospira distribution, the role of soil texture in shaping these communities remains largely uncertain. Here, we explored the diversity, community structure of comammox Nitrospira, , and their driving factors, including soil texture in 237 rice-wheat rotation soils. The results indicated that soil pH and texture were the primary factors influencing the Shannon diversity and richness of comammox Nitrospira. . Comammox Nitrospira Shannon diversity and richness were positively associated with soil pH and silt content, but negatively correlated with clay content, suggesting that finer-textured soils harbored lower comammox Nitrospira diversity. Additionally, silt content emerged as the second most influential factor, after pH, shaping comammox Nitrospira community structure. Clade A.2 was found as the predominant comammox Nitrospira clade in rice-wheat rotation soils, representing 59.3 % of the total sequences. Clade A.2 exhibited a positive correlation with sand and contents but a negative association with silt content. Conversely, Clades A.3 and B demonstrated the opposite pattern. Overall, our study underscores the critical role of soil texture as a mediator of comammox Nitrospira diversity and community structure, emphasizing the need to consider soil texture in investigations of comammox Nitrospira. .

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