Lactobacillus johnsonii strain BS15

Lactobacillus johnsonii strain BS15 is a non-pathogenic, Gram-positive bacterium belonging to the Lactobacillus genus. This strain is characterized by its rod shape and chains of cells, typical of many Lactobacillus species. It is a facultative anaerobe, allowing it to thrive in environments with varying oxygen levels. The optimal growth temperature for this strain is 25 degrees Celsius, placing it within the mesophilic temperature range. Lactobacillus johnsonii strain BS15 is primarily host-associated and has been identified in various hosts, including Homo sapiens (humans), Gallus gallus (domestic chickens), Sus scrofa (domestic pigs), Apis mellifera (honeybees), and other Metazoa. It possesses a single membrane and contains two replicons, indicating a certain level of genetic complexity. Notably, this strain does not exhibit mobility and does not possess flagella, which is consistent with its lifestyle as a free-living organism in host-associated environments. The ecological role of Lactobacillus johnsonii strain BS15 may be significant in the gut microbiota of its hosts, contributing to gut health and potentially influencing the host's immune response. Its presence across multiple species suggests a versatile ecological function, possibly aiding in digestion and nutrient absorption. This adaptability highlights the importance of Lactobacillus species in maintaining microbial balance and overall health in various ecosystems.