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Whole genome sequencing provides evidence for Bacillus velezensis SH-1471 as a beneficial rhizosphere bacterium in plants

文献类型： 外文期刊

作者： Shen, Yunxin 1 ; Shi, Zhufeng 1 ; Zhao, Jiangyuan 3 ; Li, Minggang 3 ; Tang, Jiacai 1 ; Wang, Nan 1 ; Mo, Yanfang 1 ; Yang, Tongyu 1 ; Zhou, Xudong 1 ; Chen, Qibin 2 ; Yang, Peiweng 1 ;

作者机构： 1.Yunnan Acad Agr Sci, Inst Agr Environm & Resources, Kunming 650204, Peoples R China

2.Yunnan Agr Univ, Coll Plant Protect, Kunming 655508, Peoples R China

3.Yunnan Univ, Yunnan Inst Microbiol, Kunming 650106, Peoples R China

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.6； 五年影响因子：4.9 ）

ISSN： 2045-2322

年卷期： 2023 年 13 卷 1 期

页码：

收录情况： SCI

摘要： Bacillus is widely used in agriculture due to its diverse biological activities. We isolated a Bacillus velezensis SH-1471 from the rhizosphere soil of healthy tobacco, which has broad-spectrum antagonistic activity against a variety of plant pathogenic fungi such as Fusarium oxysporum, and can be colonized in the rhizosphere of a variety of plants. This study will further explore its mechanism by combining biological and molecular biology methods. SH-1471 contains a ring chromosome of 4,181,346 bp with a mean G + C content of 46.18%. We identified 14 homologous genes related to biosynthesis of resistant secondary metabolite, and three clusters encoded potential new antibacterial substances. It also contains a large number of genes from colonizing bacteria and genes related to plant bacterial interactions. It also contains genes related to environmental stress, as well as genes related to drug resistance. We also found that there are many metabolites in the strain that can inhibit the growth of pathogens. In addition, our indoor pot test found that SH-1471 has a good control effect on tomato wilt, and could significantly improve plant height, stem circumference, root length, root weight, and fresh weight and dry weight of the aboveground part of tomato seedlings. Therefore, SH-1471 is a potential biological control strain with important application value. The results of this study will help to further study the mechanism of SH-1471 in biological control of plant diseases and promote its application.

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