Reclassification of the biocontrol agents Bacillus subtilis BY-2 and Tu-100 as Bacillus velezensis and insights into the genomic and specialized metabolite diversity of the species

文献类型： 外文期刊

第一作者： Li, Yinshui

作者： Li, Yinshui;Qin, Lu;Hu, Xiaojia;Xie, Lihua;Gu, Chiming;Liao, Xing;Mullins, Alex J.;Mahenthiralingam, Eshwar;Webster, Gordon

作者机构：

关键词： Bacillus velezensis; biocontrol; genomics; biosynthetic gene clusters

期刊名称：MICROBIOLOGY-SGM （ 影响因子：2.777； 五年影响因子：2.871 ）

ISSN： 1350-0872

年卷期： 2020 年 166 卷 12 期

页码：

收录情况： SCI

摘要： The genomes of two historical Bacillus species strains isolated from the roots of oilseed rape and used routinely in PR China as biocontrol agents to suppress Sclerotinia disease were sequenced. Average nucleotide identity (ANI) and digital DNA-DNA hybridization analyses demonstrated that they were originally misclassified as Bacillus subtilis and now belong to the bacterial species Bacillus velezensis. A broader ANI analysis of available Bacillus genomes identified 292 B. velezensis genomes that were then subjected to core gene analysis and phylogenomics. Prediction and dereplication of specialized metabolite biosynthetic gene clusters (BGCs) defined the prevalence of multiple antimicrobialassociated BGCs and highlighted the natural product potential of B. velezensis. By defining the core and accessory antimicrobial biosynthetic capacity of the species, we offer an indepth understanding of B. velezensis natural product capacity to facilitate the selection and testing of B. velezensis strains for use as biological control agents.

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