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Microbial resistance promotes plant production in a four-decade nutrient fertilization experiment

文献类型： 外文期刊

作者： Fan, Kunkun 1 ; Delgado-Baquerizo, Manuel 3 ; Guo, Xisheng 5 ; Wang, Daozhong 5 ; Zhu, Yong-Guan 6 ; Chu, Haiyan 1 ;

作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, 71 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China

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

3.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA

4.Univ Rey Juan Carlos, Escuela Super Ciencias Expt & Tecnol, Dept Biol & Geol Fis & Quim Inorgan, C Tulipan S-N, Mostoles 28933, Spain

5.Anhui Acad Agr Sci, Inst Soil & Fertilizer Res, South Nongke Rd 40, Hefei 230031, Anhui, Peoples R China

6.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Fujian, Peoples R China

关键词： Microbial community resistance; Ecological networks; Long-term nutrient fertilization; Crop production

期刊名称：SOIL BIOLOGY & BIOCHEMISTRY （ 影响因子：7.609； 五年影响因子：8.312 ）

ISSN： 0038-0717

年卷期： 2020 年 141 卷

页码：

收录情况： SCI

摘要： There is a current lack of mechanistic understanding on the relationships between a soil microbial community, crop production, and nutrient fertilization. Here, we combined ecological network theory with ecological resistance index to evaluate the responses of microbial community to additions of multiple inorganic and organic fertilizers, and their associations with wheat production in a 35-year field experiment. We found that microbial phylotypes were grouped into four major ecological clusters, which contained a certain proportions of fast-growers, copiotrophic groups, and potential plant pathogens. The application of combined inorganic fertilizers and cow manure led to the most resistant (less responsive) microbial community, which was associated with the highest levels of plant production, nutrient availability, and the lowest relative abundance of potential fungal plant pathogens after 35 years of nutrient fertilization. In contrast, microbial community was highly responsive (low resistance) to inorganic fertilization alone or plus wheat straw, which was associated with lower crop production, nutrient availability, and higher abundance of potential fungal plant pathogens. Our work demonstrates that the response of microbial community to long-term nutrient fertilizations largely regulates plant production in agricultural ecosystems, and suggests that manipulating these microbial phylotypes may offer a sustainable solution to the maintenance of field productivity under long-term nutrient fertilization scenarios.

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