Higher-level production of volatile fatty acids in vitro by chicken gut microbiotas than by human gut microbiotas as determined by functional analyses

文献类型： 外文期刊

第一作者： Lei, Fang

作者： Lei, Fang;Yin, Yeshi;Zhu, Baoli;Yin, Yeshi;Deng, Bo;Wang, Xin;Lei, Fang;Wang, Yuezhu;Wang, Shengyue;Yu, Hongwei David;Li, Lanjuan;Xiang, Charlie

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期刊名称：APPLIED AND ENVIRONMENTAL MICROBIOLOGY （ 影响因子：4.792； 五年影响因子：5.26 ）

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收录情况： SCI

摘要： The aim of this study was to determine the relationship between the composition and function of gut microbiota. Here, we compared the bacterial compositions and fermentation metabolites of human and chicken gut microbiotas. Results generated by quantitative PCR (qPCR) and 454 pyrosequencing of the 16S rRNA gene V3 region showed the compositions of human and chicken microbiotas to be markedly different, with chicken cecal microbiotas displaying more diversity than human fecal microbiotas. The nutrient requirements of each microbiota growing under batch and chemostat conditions were analyzed. The results showed that chicken cecal microbiotas required simple sugars and peptides to maintain balanced growth in vitro but that human fecal microbiotas preferred polysaccharides and proteins. Chicken microbiotas also produced higher concentrations of volatile fatty acids than did human microbiotas. Our data suggest that the availability of different fermentable substrates in the chicken cecum, which exist due to the unique anatomical structure of the cecum, may provide an environment favorable to the nourishment of microbiotas suited to the production of the higher-energy metabolites required by the bird. Therefore, gut structure, nutrition, immunity, and life-style all contribute to the selection of an exclusive bacterial community that produces types of metabolites beneficial to the host.

分类号： Q939.9

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