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Effect of long-term fertilization on bacterial communities in wheat endosphere

文献类型： 外文期刊

作者： Ma, Yuying 1 ; Weisenhorn, Pamela 3 ; Guo, Xisheng 4 ; Wang, Daozhong 4 ; Yang, Teng 2 ; Shi, Yu 2 ; Zhang, Huanchao 1 ;

作者机构： 1.Nanjing Forestry Univ, Coll Forestry, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China

2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China

3.Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA

4.Anhui Acad Agr Sci, Soil & Fertilizer Res Inst, Key Lab Nutrient Cycling & Resources Environm Anh, Hefei 230031, Peoples R China

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

关键词： co-occurrence network; endophytic bacterial community; key microbiota; long-term fertilization; organic matter

期刊名称：PEDOSPHERE （ 影响因子：3.736； 五年影响因子：3.564 ）

ISSN： 1002-0160

年卷期： 2021 年 31 卷 4 期

页码：

收录情况： SCI

摘要： Fertilization has been shown to exert a significant influence on soil microorganisms and directly and indirectly influences plant growth and survival in agroecosystems. However, it is unknown whether fertilization affects endophytic microbial communities, which are ubiquitous and intimately associated with plant growth and health. Herein, we investigated endophytic bacterial communities in wheat leaves and roots under different long-term fertilization regimes, including NPK chemical fertilizer and NPK chemical fertilizer combined with wheat straw, pig manure, or cow manure. Endophytic bacterial community composition considerably differed in leaves and roots. Although different fertilization treatments did not affect the endophytic bacterial species richness or phylogenetic diversity in either leaves or roots, the community composition was significantly altered, particularly in roots. The endophytic bacterial co-occurrence network in leaves was more complex and stable than that in roots. Furthermore, many of the keystone species that were identified by their topological positions in the co-occurrence networks of leaves and roots were involved in plant growth and fitness. The total relative abundance of keystone species was the highest in the NPK plus cow manure treatment in both leaves and roots. Overall, our results suggest that different fertilization regimes can strongly affect endophytic bacterial communities, and the combination of NPK fertilizer and cow manure promoted the relative abundance of the key endophytic bacterial microbiota in both leaves and roots, which might be beneficial for plants in agroecosystems.

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