College of Fisheries, Henan Normal University, Xinxiang, Henan, P.R. China.
J Basic Microbiol. 2018 Dec;58(12):1023-1032. doi: 10.1002/jobm.201800254. Epub 2018 Sep 5.
A feeding experiment was conducted to investigate the effects of Rehmannia glutinosa (RG) on the bacterial, archaeal, and fungal community composition in the gut of common carp (Cyprinus carpio L.). Common carp were given a control diet and an RG-supplemented diet (basal diet plus 4% prepared Rehmannia root powder) over a period of 80 days. Our results indicated that the bacteria Fusobacteria, Proteobacteria, and Bacteroidetes; the archaea Crenarchaeota and Euryarchaeota; and the fungi Basidiomycota are the most abundant microbial taxa in the gut of common carp. Compared with the common carp fed a control diet, the common carp fed an RG-supplemented diet contained a higher content of Akkermansia sp., and a lower proportion of Aeromonas sp. These results indicate that the consumption of a diet containing RG can lead to the accumulation of more beneficial microorganisms while inhibiting the growth of potential pathogens. Moreover, Crenarchaeota, the methanogenic, and Basidiomycota were detected in this study, these populations may be of high physiological relevance in carp because they have been implicated in human health and disease. Our results suggest that an RG-supplemented diet changes the intestinal microbial composition of common carp, which could have positive effects on the immune response of carp.
进行了一项饲养实验，以研究地黄（RG）对鲤鱼肠道细菌、古菌和真菌群落组成的影响。在 80 天的时间里，鲤鱼被喂食对照饲料和 RG 补充饲料（基础饲料加 4%制备的地黄根粉）。我们的结果表明，厚壁菌门、变形菌门和拟杆菌门；古菌 Crenarchaeota 和 Euryarchaeota；以及真菌 Basidiomycota 是鲤鱼肠道中最丰富的微生物类群。与喂食对照饲料的鲤鱼相比，喂食 RG 补充饲料的鲤鱼含有更高含量的阿克曼氏菌属（Akkermansia sp.），而气单胞菌属（Aeromonas sp.）的比例较低。这些结果表明，食用含有 RG 的饮食可以导致有益微生物的积累，同时抑制潜在病原体的生长。此外，本研究还检测到 Crenarchaeota、产甲烷菌和 Basidiomycota，这些种群在鲤鱼中可能具有很高的生理相关性，因为它们与人类健康和疾病有关。我们的结果表明，RG 补充饮食改变了鲤鱼的肠道微生物组成，这可能对鲤鱼的免疫反应产生积极影响。
