Isolation and identification of Bacillus mojavensis YL-RY0310 and its biocontrol potential against Penicillium expansum and patulin in apples
文献类型： 外文期刊
作者： Ding, Yu 1 ; Liu, Fengjuan 2 ; Yang, Jin 1 ; Fan, Yingying 2 ; Yu, Lvjian 1 ; Li, Zenghao 2 ; Jiang, Na 2 ; An, Jing 2 ; Jiao, Ziwei 1 ; Wang, Cheng 2 ;
作者机构： 1.Yili Normal Univ, Coll Biol & Geog Sci, 448 Jiefangxi Rd, Yining 835000, Peoples R China
2.Xinjiang Acad Agr Sci, Minist Agr & Rural Affairs, Inst Qual Stand & Testing Technol Agriprod, Key Lab Agroprod Qual & Safety Xinjiang,Lab Qual &, Urumqi 830091, Peoples R China
3.Xinjiang Agr Univ, Coll Food Sci & Pharm, 311 Nongdadong Rd, Urumqi 830052, Peoples R China
关键词： Biocontrol agent; Bacillus mojavensis; Degradation; Patulin; Penicillium expansum
期刊名称：BIOLOGICAL CONTROL （ 影响因子：4.2； 五年影响因子：4.1 ）
ISSN： 1049-9644
年卷期： 2023 年 182 卷
页码：
收录情况： SCI
摘要： Penicillium expansum is the main causal organism of apple rot and causes huge economic losses during apple storage. Patulin (PAT) produced by P. expansum, occurs widely in apples and their products because of its water -solubility and thermal stability. In the present study, we isolated bacterial strains with antagonistic activity against P. expansum to effectively control the growth of P. expansum and production of PAT. We isolated a bacterium named YL-RY0310, which inhibited the growth of P. expansum and production of PAT in apples by 77.4% and 48.4%, respectively. Strain YL-RY0310 was 96% homologous to Bacillus mojavensis using morpho-logical and 16S rRNA gene sequencing analyses. In addition, DNA amplification analysis using Bacillus-specific primers showed that the genes responsible for synthesis of lipopeptides of surfactin, iturins and fengycin are expressed. Oxford cup agar diffusion test showed that its crude lipopeptides could effectively inhibit the growth of P. expansum. Furthermore, strain YL-RY0310 could significantly degrade PAT; the degradation efficiencies of the intracellular and extracellular metabolites of the strain were 62.6% and 56.9%, respectively. Therefore, B. mojavensis YL-RY0310 could be used as a biocontrol agent to inhibit the growth of P. expansum and control PAT contamination in apples. This study provides a theoretical basis for a novel biological control strategy and degradation of mycotoxin.
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