ArticlemSphere2026
Salinity-driven microbial adaptation of hydrocarbon-degrading communities in coastal sediments.
Article in mSphere, 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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9 authors.
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Abstract
Salinity is a major abiotic driver of microbial diversity and metabolic function in coastal ecosystems. While its broad ecological impacts are well established, its role in shaping hydrocarbon-degrading communities and their adaptive mechanisms remains poorly understood. Here, we integrated gene- and genome-resolved metagenomics to investigate how salinity regulates the diversity, ecological interactions, and evolutionary dynamics of aerobic hydrocarbon-degrading microbes in Zhenhai Bay sediments (0.17-28.54 practical salinity units [PSU]). Across the natural salinity gradient, 10 types of hydrocarbon-degrading genes and 30 bacterial genomes spanning four phyla were identified, revealing extensive metabolic potential for the aerobic degradation of both aliphatic and aromatic hydrocarbons. The functional diversity and relative abundance of these genes increased significantly with salinity, accompanied by strong correlations with organic carbon parameters and nitrogen availability. Co-occurrence network analyses showed that hydrocarbon degraders, particularly
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