Microbiome analysis reveals the significant changes in gut microbiota of diarrheic Baer's Pochards (Aythya baeri) - PubMed (original) (raw)
Microbiome analysis reveals the significant changes in gut microbiota of diarrheic Baer's Pochards (Aythya baeri)
Li Xi et al. Microb Pathog. 2021 Aug.
Abstract
Gut microbiota has been demonstrated to play multiple crucial roles in immunity, physiology, metabolism, and health maintenance. Diarrhea was closely related to the gut microbiota, but information regarding the alterations in gut microbial composition and structure in Baer's Pochard (Aythya baeri) with diarrhea remains scarce. Here, 16S rDNA amplicon sequencing was performed to investigate the gut microbial variability between diarrheic and healthy Baer's Pochard. Results indicated that the gut bacterial community of diarrheic Baer's Pochard showed a distinct decrease in alpha diversity, accompanied by evident changes in taxonomic compositions. Microbial taxonomic analysis revealed that Firmicutes, Proteobacteria and Bacteroidetes were the most dominant phyla in all the fecal samples regardless of health status. At the genus level, the differences in gut bacterial abundance between healthy and diarrheic populations were gradually observed. Specifically, the proportion of Elusimicrobia in the diarrheic Baer's Pochard was increased in comparison with healthy populations, while Acidobacteria, Rokubacteria, Cyanobacteria and Patescibacteria were dramatically decreased. Additionally, the relative proportion of 23 bacterial genera significantly decreased in diarrheic Baer's Pochard, whereas the relative percentage of 4 bacterial genera (Alkanindiges, Elusimicrobium, Spirosoma and Exiguobacterium) observably increased as compared to healthy populations. Taken together, the present study revealed that there were distinct differences in the gut microbial composition and diversity between the healthy and diarrheic Baer's Pochard. Remarkably, this is the first report on the differences in the gut microbiota of Baer's Pochard under different health states and may contribute to provide better insight into gut microbial composition and diversity of Baer's Pochard.
Keywords: 16S rDNA; Baer's Pochard; Diarrhea; Gut microbiota.
Copyright © 2021 Elsevier Ltd. All rights reserved.
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