Metabarcoding reveals response of rice rhizosphere bacterial community to rice bacterial leaf blight

文献类型： 外文期刊

第一作者： Jiang, Hubiao

作者： Jiang, Hubiao;Xu, Xinyan;Ogunyemi, Solabomi Olaitan;Ahmed, Temoor;Li, Bin;Fang, Yuan;Li, Xuqing;Yang, Yong;Yan, Chengqi;Chen, Jianping;Fang, Yuan;Chen, Jianping;Li, Bin

作者机构：

关键词： Bacterial leaf blight; Rice; 16S rRNA gene sequence; Rhizosphere; Microbial community

期刊名称：MICROBIOLOGICAL RESEARCH （ 影响因子：6.7； 五年影响因子：7.1 ）

ISSN： 0944-5013

年卷期： 2023 年 270 卷

页码：

收录情况： SCI

摘要： Rice bacterial leaf blight (BLB) is a major disease affecting cultivated rice and caused by the bacterium Xan-thomonas oryzae pv. oryzae (Xoo). It is well established that rhizosphere microorganisms could help improve the adaptability of plants to biotic stresses. However, it is still unclear about the response mechanism of rice rhizosphere microbial community to BLB infection. Here, we used 16S rRNA gene amplicon sequencing to explore the effect of BLB on the rice rhizosphere microbial community. The results show that the alpha diversity index of the rice rhizosphere microbial community decreased significantly at the onset of BLB and then gradually recovered to normal levels. Beta diversity analysis indicated that BLB significantly affected community composition. In addition, there were significant differences in the taxonomic composition between healthy and diseased groups. For example, ceretain genera were more abundant in diseased rhizospheres, namely Strepto-myces, Sphingomonas, and Flavobacterium, among others. In addition, the size and complexity of the rhizosphere co-occurrence network increased after disease onset compared to healthy groups. Also, hub microbe Rhizobia-ceae and Gemmatimonadaceae were identified in the diseased rhizosphere co-occurrence network, and these hub microbes played an important role in maintaining network stability. In conclusion, our results provide important insights into the rhizosphere microbial community response to BLB and also provide important data and ideas in using rhizosphere microbes to control BLB.

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