Effects of metals on activity and community of sulfate-reducing bacterial enrichments and the discovery of a new heavy metal-resistant SRB from Santos Port sediment (São Paulo, Brazil)

Abstract

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Molecular regulation of conditioning film formation and quorum quenching in sulfate reducing bacteria

“…However, carbon mineralization relies on the synergistic behavior of enzymatic cocktails, including cytochrome oxidases, metal dehydrogenases, etc., which in particular are affected by heavy metals, e.g., copper (Cu). For instance, metabolic activity, primarily sulfate reduction by SRB, decreased considerably with the increasing concentrations of heavy metals, specifically Cu ( Zampieri et al, 2022 ). Hence, the antimicrobial characteristics of the Cu garnered tremendous attention for developing the marine infrastructure.…”

“…Several studies have demonstrated the toxic nature of Cu toward the SRB ( Zampieri et al, 2022 ). Copper metal completely inhibits SRB mixed culture at a concentration ~ 4 mg/L ( Hao et al, 1994 ), and ~50% reduction in total cell protein was reported at a concentration of 15 μM of Cu(II) for Oleidesulfovibrio alaskensis G20 ( Tripathi et al, 2022 ).…”