Nitrogen fertilization modulates rice seed endophytic microbiomes and grain quality

文献类型： 外文期刊

第一作者： Liu, Yuanhui

作者： Liu, Yuanhui;Chu, Guang;Chen, Song;Xu, Chunmei;Zhang, Xiufu;Wang, Danying;Stirling, Erinne;Stirling, Erinne;Zhang, Haoqing;Ge, Tida

作者机构：

关键词： Nitrogen fertilization; Oryza sativa L.; Seed endophytic microbiomes; Grain quality

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）

ISSN： 0048-9697

年卷期： 2023 年 857 卷

页码：

收录情况： SCI

摘要： The intensive use of chemical fertilizer, particularly nitrogen (N) has resulted in not only markedly increased crop yields but also detrimental effects on ecosystems. Plantmicrobiomes represent an eco-friendly alternative for plant nutrition and productivity, and the effect of N fertilization on plant and soil microbes has been well studied. However, if and howN fertilization modulates seed endophyticmicrobiomes and grain quality remains largely unknown. Here, we investigated the effect of different N fertilization rates on rice seed endophytic bacterial and fungal communities as well as on grain quality. Higher bacterial and fungal community diversity and richness, but lower grain protein and amino acid contents were found in seeds of rice treated moderate N fertilization than those treated insufficient or excessive N input. There were also more complex co-occurrence networks, and an enrichment of putative beneficial bacterial taxa in seeds under moderate N application, while there was an opposite trend under the excessive N treatment. In addition, the grain amylose and amylopectin contents were positively correlated with the relative abundance of bacterial and fungal dominant genera, while the grain amino acid contents were negatively correlated with the bacterial dominant genera but positively associated with fungal dominant genera. Together, we demonstrate that moderate N fertilization can enhance bacterial and fungal community colonization in seeds and improve grain eating and cooking qualities. This study extends our knowledge regarding the significant role of rational fertilization on seedmicrobe interactions in sustainable agriculture.

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