Acidithiobacillus ferridurans strain JCM 18981

Acidithiobacillus ferridurans strain JCM 18981 is a Gram-negative, spirilla-shaped bacterium that exhibits obligate chemoautolithotrophic metabolism. This strain thrives in specialized habitats, where it plays a significant role in biogeochemical cycles, particularly in environments rich in iron and sulfur compounds. It is an aerobic organism, requiring oxygen for its metabolic processes, which aligns with its adaptation to environments where oxygen is available. Optimal growth of A. ferridurans strain JCM 18981 occurs at a temperature of 30.0°C, suggesting its preference for moderately thermophilic conditions. Notably, this strain does not undergo sporulation, indicating that it relies on its metabolic capabilities to endure environmental stresses rather than forming resistant spores. The ability to utilize inorganic compounds as an energy source allows A. ferridurans strain JCM 18981 to occupy niches that may be inhospitable to other microbial life forms. Its unique metabolic pathway contributes to the oxidation of ferrous iron, which can influence the mineralogy of its habitat and potentially facilitate bioremediation processes in contaminated environments. Understanding the ecological role of this strain in specialized habitats may provide insights into microbial interactions and the cycling of essential elements in extreme environments.