Bifidobacterium adolescentis strain AF21-27

Bifidobacterium adolescentis strain AF21-27 is a Gram-positive, non-motile anaerobic bacterium characterized by its rod shape and single-cell arrangement. This strain is mesophilic, with an optimal growth temperature of 37°C, indicating that it thrives at human body temperature. It possesses one membrane and one replicon, confirming its relatively simple cellular structure typical of many bacteria in the Bifidobacterium genus. This strain is host-associated and exhibits a free-living biotic relationship, indicating its ability to survive independently in certain environments while also being adapted to specific host organisms. Notably, B. adolescentis strain AF21-27 has been isolated from various hosts, including Homo sapiens (humans), Bos taurus (cattle), Sus scrofa (pigs), and Oryctolagus cuniculus (rabbits). This diversity suggests that the strain may play a role in the gut microbiota of these species, potentially influencing digestion and overall health. The absence of flagella and the non-sporulating nature of this strain further emphasize its adaptations to anaerobic environments, where it likely contributes to the complex interactions within the gut microbiome. Understanding the ecological role of Bifidobacterium adolescentis strain AF21-27 can provide insights into its significance in host health and the maintenance of microbial diversity in gastrointestinal systems across different mammals.