gamma-Polyglutamic Acid Production, Biocontrol, and Stress Tolerance: Multifunction of Bacillus subtilis A-5 and the Complete Genome Analysis
文献类型： 外文期刊
作者： Bai, Naling 1 ; He, Yu 1 ; Zhang, Hanlin 1 ; Zheng, Xianqing 1 ; Zeng, Rong 1 ; Li, Yi 2 ; Li, Shuangxi 1 ; Lv, Weiguang 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai 201403, Peoples R China
2.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China
3.Minist Agr & Rural Affairs, Agr Environm & Farmland Conservat Expt Stn, Shanghai 201403, Peoples R China
4.Minist Agr & Rural Affairs, Key Lab Low Carbon Green Agr, Shanghai 201403, Peoples R China
5.Shanghai Key Lab Hort Technol, Shanghai 201403, Peoples R China
关键词： Bacillus subtilis; genome analysis; gamma-PGA production; pathogen antagonism; salinity/alkalinity tolerance
期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH （ 影响因子：4.614； 五年影响因子：4.798 ）
ISSN：
年卷期： 2022 年 19 卷 13 期
页码：
收录情况： SCI
摘要： Bacillus subtilis A-5 has the capabilities of high-molecular-weight gamma-PGA production, antagonism to plant pathogenic fungi, and salt/alkaline tolerance. This multifunctional bacterium has great potential for enhancing soil fertility and plant security in agricultural ecosystem. The genome size of B. subtilis A-5 was 4,190,775 bp, containing 1 Chr and 2 plasmids (pA and pB) with 43.37% guanine-cytosine content and 4605 coding sequences. The gamma-PGA synthase gene cluster was predicted to consist of pgsBCA and factor (pgsE). The gamma-PGA-degrading enzymes were mainly pgdS, GGT, and cwlO. Nine gene clusters producing secondary metabolite substances, namely, four unknown function gene clusters and five antibiotic synthesis gene clusters (surfactin, fengycin, bacillibactin, subtilosin_A, and bacilysin), were predicted in the genome of B. subtilis A-5 using antiSMASH. In addition, B. subtilis A-5 contained genes related to carbohydrate and protein decomposition, proline synthesis, pyruvate kinase, and stress-resistant proteins. This affords significant insights into the survival and application of B. subtilis A-5 in adverse agricultural environmental conditions.
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