Response of the gut microbiome of Megalobrama amblycephala to crowding stress

文献类型： 外文期刊

第一作者： Du, Fukuan

作者： Du, Fukuan;Xu, Pao;Du, Fukuan;Li, Yan;Tang, Yongkai;Su, Shengyan;Yu, Juhua;Yu, Fan;Li, Jianlin;Li, Hongxia;Wang, Meiyao;Xu, Pao

作者机构：

关键词： Gut; Megalobrama amblycephala; Metabolome; Microbiota; Stress

期刊名称：AQUACULTURE （ 影响因子：4.242； 五年影响因子：4.723 ）

ISSN： 0044-8486

年卷期： 2019 年 500 卷

页码：

收录情况： SCI

摘要： Environmental factors, including drugs and diet, have been shown to affect the microbiome composition. However, whether physical factors affect the gut microbiome composition of fish and whether this change affects fish growth are unknown. The response of gut microorganisms to physical factors such as crowding was assessed by examining the gut microbiome and metabolome of fish from a high-density group and a low-density group. During the 90-day growth period, nine genera of gut microbes were significantly changed between the two groups. In addition, 32 metabolites were significantly changed between the two groups. The correlation analysis of differentially abundant gut microbes and metabolites allowed the identification of eight gut microbes, 13 metabolites and enrichment of seven metabolic pathways. Among the enriched pathways, the pentose phosphate pathway played potential role in the adaption of crowding stress and regulation of glucose metabolism. The response of the pentose phosphate pathway to crowding stress was further determined by evaluating key metabolites, biochemical changes, and the expression of a rate-controlling enzyme in this pathway. Our results provided new evidence that the gut microbiome might be involved in the response to crowding and consequently to the adaptation of fish to environmental stressors via the pentose phosphate pathway.

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