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The rhizosphere and root selections intensify fungi-bacteria interaction in abiotic stress-resistant plants

文献类型： 外文期刊

作者： Huang, Feng 1 ; Lei, Mengying 2 ; Li, Wen 3 ;

作者机构： 1.Guangdong Acad Agr Sci, Key Lab Green Prevent & Control Fruits & Vegetable, Guangdong Prov Key Lab High Technol Plant Protect, Plant Protect Res Inst ,Minist Agr & Rural Affairs, Guangzhou 510640, Guangdong, Peoples R China

2.GuangDong Ecoengn Polytech, Guangzhou, Guangdong, Peoples R China

3.City Coll Vocat Technol Utilizat Ningbo, Key Lab Plant Dev, Ningbo, Zhejiang, Peoples R China

关键词： Stress-resistance; Rhizosphere effect; Root selection; Bacterial community; Fungal community

期刊名称：PEERJ （ 影响因子：2.7； 五年影响因子：3.1 ）

ISSN： 2167-8359

年卷期： 2024 年 12 卷

页码：

收录情况： SCI

摘要： The microbial communities, inhabiting around and in plant roots, are largely influenced by the compartment effect, and in turn, promote the growth and stress resistance of the plant. However, how soil microbes are selected to the rhizosphere, and further into the roots is still not well understood. Here, we profiled the fungal, bacterial communities and their interactions in the bulk soils, rhizosphere soils and roots of eleven stress-resistant plant species after six months of growth. The results showed that the root selection (from the rhizosphere soils to the roots) was stronger than the rhizosphere selection (from the bulk soils to the rhizosphere soils) in: (1) filtering stricter on the fungal (28.5% to 40.1%) and bacterial (48.9% to 68.1%) amplicon sequence variants (ASVs), (2) depleting more shared fungal (290 to 56) and bacterial (691 to 2) ASVs measured by relative abundance, and (3) increasing the significant fungi-bacteria crosskingdom correlations (142 to 110). In addition, the root selection, but not the rhizosphere selection, significantly increased the fungi to bacteria ratios (f:b) of the observed species and shannon diversity index, indicating unbalanced effects to the fungal and bacteria communities exerted by the root selection. Based on the results of network analysis, the unbalanced root selection effects were associated with increased numbers of negative interaction (140 to 99) and crosskingdom interaction (123 to 92), suggesting the root selection intensifies the negative fungi-bacteria interactions in the roots. Our findings provide insights into the complexity of crosskingdom interactions and improve the understanding of microbiome assembly in the rhizosphere and roots.

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[1]The rhizosphere and root selections intensify fungi-bacteria interaction in abiotic stress-resistant plants. Huang, Feng,Lei, Mengying,Li, Wen,Li, Wen. 2024

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