Klebsiella variicola strain A8

Klebsiella variicola strain A8 is a Gram-negative, rod-shaped bacterium that exhibits a facultative anaerobic metabolism, allowing it to thrive in various oxygen environments. This strain is characterized by its ability to form chains, pairs, and single cells, and it possesses flagella, indicating mobility. K. variicola A8 is mesophilic, with an optimal growth temperature of 37°C, which is within the range suitable for human pathogens. This bacterium is notably associated with multiple hosts, including Homo sapiens, Metazoa, Ovis aries, Aporrectodea sp., and Metaphire sieboldi, establishing a symbiotic relationship with these organisms. Such interactions might play a role in the ecological dynamics within their respective environments. K. variicola strain A8 is recognized for its clinical significance, being linked to bloodstream and urinary tract infections in humans. The presence of this bacterium in the human microbiome raises important considerations regarding its potential pathogenicity, especially as it may contribute to infections in susceptible populations. With a single replicon and a double membrane structure, K. variicola A8 exemplifies characteristics typical of many Enterobacteriaceae. The nonsporulating nature of this strain further emphasizes its adaptation to stable environments rather than conditions that necessitate sporulation for survival. In summary, the ecological and health implications of Klebsiella variicola strain A8 underscore its role as a symbiont and potential pathogen, suggesting that understanding its interactions with various hosts is crucial for managing infections and studying microbial ecology.