Microbiome enrichment from contaminated marine sediments unveils novel bacterial strains for petroleum hydrocarbon and heavy metal bioremediation

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dc.contributor.authorDell’Anno, Filippo
dc.contributor.authorJoaquim van Zyl, Leonardo
dc.contributor.authorTrindade, Marla
dc.date.accessioned2023-06-13T12:11:50Z
dc.date.available2023-06-13T12:11:50Z
dc.date.issued2023
dc.description.abstractPetroleum hydrocarbons and heavy metals are some of the most widespread contaminants affecting marine ecosystems, urgently needing effective and sustainable remediation solutions. Microbial-based bioremediation is gaining increasing interest as an effective, economically and environmentally sustainable strategy. Here, we hypothesized that the heavily polluted coastal area facing the Sarno River mouth, which discharges >3 tons of polycyclic aromatic hydrocarbons (PAHs) and ~15 tons of heavy metals (HMs) into the sea annually, hosts unique microbiomes including marine bacteria useful for PAHs and HMs bioremediation. We thus enriched the microbiome of marine sediments, contextually selecting for HM-resistant bacteria. The enriched mixed bacterial culture was subjected to whole-DNA sequencing, metagenome-assembled-genomes (MAGs) annotation, and further sub-culturing to obtain the major bacterial species as pure strains. We obtained two novel isolates corresponding to the two most abundant MAGs (Alcanivorax xenomutans strain-SRM1 and Halomonas alkaliantarctica strain-SRM2), and tested their ability to degrade PAHs and remove HMs. Both strains exhibited high PAHs degradation (60–100%) and HMs removal (21–100%) yield, and we described in detail >60 genes in their MAGs to unveil the possible genetic basis for such abilities.en_US
dc.identifier.citationDell’Anno, F. et al. (2023). Microbiome enrichment from contaminated marine sediments unveils novel bacterial strains for petroleum hydrocarbon and heavy metal bioremediation. Environmental Pollution, 317, 120772. https://doi.org/10.1016/j.envpol.2022.120772en_US
dc.identifier.issn1873-6424
dc.identifier.urihttps://doi.org/10.1016/j.envpol.2022.120772
dc.identifier.urihttp://hdl.handle.net/10566/9070
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectBiotechnologyen_US
dc.subjectBioremediationen_US
dc.subjectMarine biotechnologyen_US
dc.subjectMarine bacteriaen_US
dc.titleMicrobiome enrichment from contaminated marine sediments unveils novel bacterial strains for petroleum hydrocarbon and heavy metal bioremediationen_US
dc.typeArticleen_US

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