ArticleFrontiers in microbiology2026
Carbon starvation enhances microbiologically influenced corrosion in marine offshore infrastructures.
Article in Frontiers in microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: In offshore wind foundations, microbiologically influenced corrosion (MIC) is a critical concern in the mud zone, where steel is embedded in sediment characterized by limited oxygen availability and pronounced redox gradients. In marine sediments, the limited availability of labile substrates can influence microbial metabolic strategies, potentially promoting alternative electron-transfer pathways. Here, we performed an exploratory mechanistic study to investigate how carbon availability influences microbial community structure and corrosion behavior in multispecies biofilms relevant to offshore infrastructure. Methods: Sediment from the North Sea was used as inoculum, and steel coupons were exposed under blank (no added carbon), lactate, and yeast extract conditions. Corrosion was assessed by weight loss and 3D profiling, while microbial communities were analyzed using 16S rRNA gene sequencing. Results and discussion: The findings illustrated that nutrient regime strongly shaped microbial and chemical conditions. Yeast extract produced the highest total sulfide concentrations (9 mM), but corrosion severity did not scale with bulk sulfide accumulation. The highest corrosion rate occurred under carbon-limited conditions (0.55 mm yr
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