Characterization of the probiotic and functional properties of Enterococcus faecalis AQ10 isolated from chicken cecum
文献类型： 外文期刊
作者： Yin, Haichang 1 ; Zhang, Xinyu 2 ; Jiang, Xinjie 2 ; Liu, Di 1 ;
作者机构： 1.Heilongjiang Acad Agr Sci, Postdoctoral Res Workstat, Harbin 150069, Peoples R China
2.Qiqihar Univ, Coll Life Sci & Agr Forestry, Qiqihar 161006, Peoples R China
关键词： Enterococcus faecalis; whole-genome analysis; probiotic; Klebsiella pneumoniae; organic acids
期刊名称：LETTERS IN APPLIED MICROBIOLOGY （ 影响因子：2.1； 五年影响因子：2.4 ）
ISSN： 0266-8254
年卷期： 2024 年 77 卷 12 期
页码：
收录情况： SCI
摘要： Lactic acid bacteria are considered the safest alternative to antibiotics and have a broad range of applications in animal husbandry. Enterococcus faecalis is a primary component of the chicken gut microbiota; it is known for its ability to regulate intestinal microbial balance and its probiotic functions. In this study, E. faecalis strain AQ10 from isolated from was the chicken cecum and used a combination of whole-genome sequencing and phenotypic analyses to investigate its probiotic properties. Whole-genome sequencing revealed that the genome length of E. faecalis AQ10 is 2.98 Mbp, with an average guanine-cytosine content of 38.12%, and includes 2832 protein-coding genes. Genome mining tools were used to identify an antimicrobial compound gene cluster. Additionally, E. faecalis AQ10 exhibited probiotic characteristics in vivo and antibacterial effects in vitro, with organic acids potentially contributing to its anti-Klebsiella pneumoniae activity. Metabolomics analyses revealed that the supernatant of E. faecalis AQ10 contained seven organic acids. In conclusion, E. faecalis AQ10 demonstrates significant probiotic potential and may be a suitable candidate for use in livestock and poultry breeding.
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