Comparative Genomics and In Vitro Experiments Provide Insight into the Adaptation and Probiotic Properties of Shouchella clausii
文献类型： 外文期刊
作者： Shi, Huai 1 ; Liu, Guohong 1 ; Chen, Qianqian 1 ;
作者机构： 1.Fujian Acad Agr Sci, Inst Resources Environm & Soil Fertilizer, Fuzhou 350003, Peoples R China
关键词：
期刊名称：MICROORGANISMS （ 影响因子：4.2； 五年影响因子：4.6 ）
ISSN：
年卷期： 2024 年 12 卷 11 期
页码：
收录情况： SCI
摘要： Shouchella clausii (S. clausii) has been marketed as an important commercial probiotic, displaying significant therapeutic effects on antibiotic-associated diarrhea and providing benefits to humans. This study aimed to explore the distribution, adaptation, and probiotic properties of S. clausii. Based on 16S rRNA gene analysis, 43 strains of S. clausii were isolated from 317 soil samples in China. Based on the genomic index of Average Nucleotide Identity (ANI) results, 41 strains were confirmed as S. clausii, while two strains, FJAT-45399 and FJAT-45335, were identified as potential novel species distinct from S. clausii. Combined phenotypic and genomic predictions indicated that S. clausii could survive under harsh conditions. Comparative genomics revealed that these isolates possess antibiotic resistance genes, as well as capabilities for bacteriocin and folate production, while lacking toxins and hemolytic activity. Hemolysis tests indicated that strain FJAT-41761 exhibited non-pathogenic gamma-hemolytic activity, while also demonstrating resistance to multiple antibiotics, consistent with probiotic characteristics. These findings suggest that strain FJAT-41761 is safe and holds potential as a future probiotic.
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