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How does SRB biofilm benefit from MIC of iron?

benefit biofilm iron mic SRB
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How does SRB biofilm benefit from MIC of iron?

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It is all about bioenergetics! Iron dissolution with concomitant sulfate reduction is exergonic. The released energy helps support metabolic activities of sessile SRB cells. Although the redox reaction is spontaneous, sulfate reduction does not occur at an appreciable rate. SRB enzymes (namely hydrogenase enzymes) promote sulfate reduction.

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