Abstract
Metal-resistant bacteria are recommended for metal removal applications due to their rapid multiplication and growth rates. To ensure safety replenishment in contaminated areas frequently hampered by heavy metal toxicity, it is crucial to comprehend their coping mechanisms under heavy metal stress. This study primarily examines the role of EPS (exopolysaccharide) in Stenotrophomonas maltophilia, a Gram-negative, aerobic, and rod-shaped bacteria, in response to Cd, as well as the binding behavior and biosorption mechanism between EPS and Cd, using SEM and FTIR. The studies showed that Stenotrophomonas maltophilia, can resist up to 150 μM of Cd due to the binding of Cd to EPS. SEM analysis showed significant morphological changes and FTIR was to identify main structural groups like carboxyl and hydroxyl which confirms the presence of EPS. The study will also describe the mechanism of cross-reactivity between exopolysaccharide and siderophore production in metal-tolerant Stenotrophomonas maltophilia. This study proved that siderophore-mediated metal detoxification and effective absorption have been linked to metal chelation.
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Ramakrishnan, S., Muruganraj, T., Majumdar, R. et al. Study of Cadmium Metal Resistance in Stenotrophomonas maltophilia. Indian J Microbiol 63, 91–99 (2023). https://doi.org/10.1007/s12088-023-01066-9
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DOI: https://doi.org/10.1007/s12088-023-01066-9