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The Influence of the Genotype and Planting Density on the Structure and Composition of Root and Rhizosphere Microbial Communities in Maize

文献类型： 外文期刊

作者： Zhang, Yang 1 ; Lin, Jianxin 1 ; Chen, Shanhu 1 ; Lu, Heding 1 ; Liao, Changjian 1 ;

作者机构： 1.Fujian Acad Agr Sci, Inst Crops Res, Tech Res Ctr Dry Crop Variety Breeding Fujian Prov, Fuzhou 350013, Peoples R China

关键词： Maize; microbial communities; high-density planting; rhizosphere bacteria; root-associated bacteria

期刊名称：MICROORGANISMS （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 11 卷 10 期

页码：

收录情况： SCI

摘要： Maize has the largest cultivation area of any crop in the world and plays an important role in ensuring food security. High-density planting is essential for maintaining high maize yields in modern intensive agriculture. Nonetheless, how high-density planting and the tolerance of individual genotypes to such planting shape the root-associated microbiome of maize is still unknown. In this study, we analyzed the root and rhizosphere bacterial communities of two maize accessions with contrasting shoot architectures grown under high- and low-density planting conditions. Our results suggested that maize hosted specific, distinct bacterial communities in the root endocompartment and that the maize genotype had a significant effect on the selection of specific microbes from the rhizosphere. High-density planting also had significant effects on root-associated bacterial communities. Specifically, genotype and high-density planting coordinated to shape the structure, composition, and function of root and rhizosphere bacterial communities. Taken together, our results provide insights into how aboveground plant architecture and density may alter the belowground bacterial community in root-associated compartments of maize.

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