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- W3096252024 endingPage "1749" @default.
- W3096252024 startingPage "1749" @default.
- W3096252024 abstract "Diesel oil is the main source of energy used in Antarctica. Since diesel is composed of toxic compounds such as polycyclic aromatic hydrocarbons (PAHs) and heavy metals, it represents a constant threat to the organisms inhabiting this continent. In the present study, we characterized the chemical and biological parameters of diesel-exposed soils obtained from King George Island in Antarctica. Contaminated soils present PAH concentrations 1000 times higher than non-exposed soils. Some contaminated soil samples also exhibited high concentrations of cadmium and lead. A 16S metagenome analysis revealed the effect of co-contamination on bacterial communities. An increase in the relative abundance of bacteria known as PAH degraders or metal resistant was determined in co-contaminated soils. Accordingly, the soil containing higher amounts of PAHs exhibited increased dehydrogenase activity than control soils, suggesting that the microorganisms present can metabolize diesel. The inhibitory effect on soil metabolism produced by cadmium was lower in diesel-contaminated soils. Moreover, diesel-contaminated soils contain higher amounts of cultivable heterotrophic, cadmium-tolerant, and PAH-degrading bacteria than control soils. Obtained results indicate that diesel contamination at King George island has affected microbial communities, favoring the presence of microorganisms capable of utilizing PAHs as a carbon source, even in the presence of heavy metals." @default.
- W3096252024 created "2020-11-09" @default.
- W3096252024 creator A5008894842 @default.
- W3096252024 creator A5058595486 @default.
- W3096252024 creator A5066684788 @default.
- W3096252024 creator A5082483178 @default.
- W3096252024 creator A5087385103 @default.
- W3096252024 date "2020-11-07" @default.
- W3096252024 modified "2023-10-17" @default.
- W3096252024 title "Effect of Co-contamination by PAHs and Heavy Metals on Bacterial Communities of Diesel Contaminated Soils of South Shetland Islands, Antarctica" @default.
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- W3096252024 doi "https://doi.org/10.3390/microorganisms8111749" @default.
- W3096252024 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7695015" @default.
- W3096252024 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33171767" @default.
- W3096252024 hasPublicationYear "2020" @default.
- W3096252024 type Work @default.