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Application of thifluzamide alters microbial network structure and affects methane cycle genes in rice-paddy soil

文献类型： 外文期刊

作者： Zhang, Ying 1 ; Wu, Xiaohu 2 ; Chen, Caijun 3 ; Xu, Jun 2 ; Dong, Fengshou 2 ; Liu, Xingang 2 ; Li, Xiaogang 1 ; Zheng, Yongquan 2 ;

作者机构： 1.Hunan Agr Univ, Coll Plant Protect, Southern Reg Collaborat Innovat Ctr Grain & Oil Cr, Changsha 410128, Peoples R China

2.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Key Lab Control Biol Hazard Factors Plant Origin A, Beijing 100193, Peoples R China

3.Guizhou Acad Agr Sci, Inst Plant Protect, Guiyang 550006, Peoples R China

关键词： Thifluzamide; Community structure; Network; Methane

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：10.753； 五年影响因子：10.237 ）

ISSN： 0048-9697

年卷期： 2022 年 838 卷

页码：

收录情况： SCI

摘要： of thifluzamide on the abundance of microbes harboring methane-cycle genes and soil microbial community assembly patterns are not well known. Thus, we conducted a three-month indoor mesocosm experiment to ascertain the effects of thifluzamide (0.05, 0.5, and 5 mg kg-1 soil; 0.05 mg kg-1 soil being recommended) on bacterial and archaeal community structure and on the abundance of methanogen genes using two typical paddy soils: sandy soil from Hangzhou (HZ) and loam sandy soil from Jiansanjiang (JSJ). The effects of thifluzamide on soil microorganisms were related to soil type. In JSJ loam sandy soil, thifluzamide significantly increased bacterial alpha diversity after 7-30 d and archaeal alpha diversity at 30 and 60 d. In HZ sandy soil, however, alpha diversity did not change significantly. Network analysis showed that thifluzamide-treated soils possessed more complex networks with more total nodes and links, a higher average degree of connectivity, and more keystone species. Thifluzamide application increased the number of keystone species associated with methane production in both types of paddy soil. A relatively greater number of modules were significantly negatively correlated with mcrA abundance in the HZ T10 network, but more modules were positively correlated with mcrA abundance in the JSJ T100 network. The half-life of thifluzamide varied for the different doses, i.e., from 152.0 to 419.6 d. The results reveal that methane-cycle genes, soil microbiome assembly, and interactions among microbial species all change in response to thifluzamide stress.

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