Different Bacteroides Species Colonise Human and Chicken Intestinal Tract

Microorganisms

卷:8

Alois Cizek¹  Petra Videnska²  Zuzana Seidlerova³  Tereza Kubasova³  Miloslava Kollarcikova³  Eva Jahodarova³  Ivan Rychlik³  Marcela Faldynova³  Jitka Matiasovicova³  Vladimir Babak³ 

[1] Department of Infectious Diseases and Microbiology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, 61242 Brno, Czech Republic;

[2] Faculty of Science, Masaryk’s University, 62500 Brno, Czech Republic;

[3] Veterinary Research Institute, 62100 Brno, Czech Republic;

关键词: microbiota;    pentose cycle;    glutamate decarboxylase;    microbiome;    chicken;    human;   

DOI  :  10.3390/microorganisms8101483

来源: DOAJ

【 摘 要 】

Bacteroidaceae are common gut microbiota members in all warm-blooded animals. However, if Bacteroidaceae are to be used as probiotics, the species selected for different hosts should reflect the natural distribution. In this study, we therefore evaluated host adaptation of bacterial species belonging to the family Bacteroidaceae. B. dorei, B. uniformis, B. xylanisolvens, B. ovatus, B. clarus, B. thetaiotaomicron and B. vulgatus represented human-adapted species while B. gallinaceum, B. caecigallinarum, B. mediterraneensis, B. caecicola, M. massiliensis, B. plebeius and B. coprocola were commonly detected in chicken but not human gut microbiota. There were 29 genes which were present in all human-adapted Bacteroides but absent from the genomes of all chicken isolates, and these included genes required for the pentose cycle and glutamate or histidine metabolism. These genes were expressed during an in vitro competitive assay, in which human-adapted Bacteroides species overgrew the chicken-adapted isolates. Not a single gene specific for the chicken-adapted species was found. Instead, chicken-adapted species exhibited signs of frequent horizontal gene transfer, of KUP, linA and sugE genes in particular. The differences in host adaptation should be considered when the new generation of probiotics for humans or chickens is designed.

【 授权许可】

Unknown