A First Glimpse on Cold-Adapted PCB-Oxidizing Bacteria in Edmonson Point Lakes (Northern Victoria Land, Antarctica)
Antarctic freshwater ecosystems are especially vulnerable to human impacts. Polychlorobiphenyls (PCBs) are persistent organic pollutants that have a long lifetime in the environment. Despite their use having either been phased out or restricted, they are still found in nature, also in remote areas....
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| Format: | Article |
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MDPI AG
2022-01-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/1/109 |
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| author | Maria Papale Angelina Lo Giudice Alessandro Ciro Rappazzo Maurizio Azzaro Carmen Rizzo |
| author_facet | Maria Papale Angelina Lo Giudice Alessandro Ciro Rappazzo Maurizio Azzaro Carmen Rizzo |
| author_sort | Maria Papale |
| collection | DOAJ |
| description | Antarctic freshwater ecosystems are especially vulnerable to human impacts. Polychlorobiphenyls (PCBs) are persistent organic pollutants that have a long lifetime in the environment. Despite their use having either been phased out or restricted, they are still found in nature, also in remote areas. Once in the environment, the fate of PCBs is strictly linked to bacteria which represent the first step in the transfer of toxic compounds to higher trophic levels. Data on PCB-oxidizing bacteria from polar areas are still scarce and fragmented. In this study, the occurrence of PCB-oxidizing cold-adapted bacteria was evaluated in water and sediment of four coastal lakes at Edmonson Point (Northern Victoria Land, Antarctica). After enrichment with biphenyl, 192 isolates were obtained with 57 of them that were able to grow in the presence of the PCB mixture Aroclor 1242, as the sole carbon source. The catabolic gene <i>bph</i>A, as a proxy for PCB degradation potential, was harbored by 37 isolates (out of 57), mainly affiliated to the genera <i>Salinibacterium</i>, <i>Arthrobacter</i> (among Actinobacteria) and <i>Pusillimonas</i> (among Betaproteobacteria). Obtained results enlarge our current knowledge on cold-adapted PCB-oxidizing bacteria and pose the basis for their potential application as a valuable eco-friendly tool for the recovery of PCB-contaminated cold sites. |
| first_indexed | 2024-03-10T03:11:07Z |
| format | Article |
| id | doaj.art-0fb70844cfbb49bf9bc3cddfdfd011e6 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T03:11:07Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-0fb70844cfbb49bf9bc3cddfdfd011e62023-11-23T12:33:06ZengMDPI AGWater2073-44412022-01-0114110910.3390/w14010109A First Glimpse on Cold-Adapted PCB-Oxidizing Bacteria in Edmonson Point Lakes (Northern Victoria Land, Antarctica)Maria Papale0Angelina Lo Giudice1Alessandro Ciro Rappazzo2Maurizio Azzaro3Carmen Rizzo4Institute of Polar Sciences, National Research Council of Italy (CNR-ISP), Spianata S. Raineri 86, 98122 Messina, ItalyInstitute of Polar Sciences, National Research Council of Italy (CNR-ISP), Spianata S. Raineri 86, 98122 Messina, ItalyInstitute of Polar Sciences, National Research Council of Italy (CNR-ISP), Spianata S. Raineri 86, 98122 Messina, ItalyInstitute of Polar Sciences, National Research Council of Italy (CNR-ISP), Spianata S. Raineri 86, 98122 Messina, ItalyInstitute of Polar Sciences, National Research Council of Italy (CNR-ISP), Spianata S. Raineri 86, 98122 Messina, ItalyAntarctic freshwater ecosystems are especially vulnerable to human impacts. Polychlorobiphenyls (PCBs) are persistent organic pollutants that have a long lifetime in the environment. Despite their use having either been phased out or restricted, they are still found in nature, also in remote areas. Once in the environment, the fate of PCBs is strictly linked to bacteria which represent the first step in the transfer of toxic compounds to higher trophic levels. Data on PCB-oxidizing bacteria from polar areas are still scarce and fragmented. In this study, the occurrence of PCB-oxidizing cold-adapted bacteria was evaluated in water and sediment of four coastal lakes at Edmonson Point (Northern Victoria Land, Antarctica). After enrichment with biphenyl, 192 isolates were obtained with 57 of them that were able to grow in the presence of the PCB mixture Aroclor 1242, as the sole carbon source. The catabolic gene <i>bph</i>A, as a proxy for PCB degradation potential, was harbored by 37 isolates (out of 57), mainly affiliated to the genera <i>Salinibacterium</i>, <i>Arthrobacter</i> (among Actinobacteria) and <i>Pusillimonas</i> (among Betaproteobacteria). Obtained results enlarge our current knowledge on cold-adapted PCB-oxidizing bacteria and pose the basis for their potential application as a valuable eco-friendly tool for the recovery of PCB-contaminated cold sites.https://www.mdpi.com/2073-4441/14/1/109polychlorobiphenylscold-adapted bacteria<i>bph</i>A geneAntarctic coastal lakes |
| spellingShingle | Maria Papale Angelina Lo Giudice Alessandro Ciro Rappazzo Maurizio Azzaro Carmen Rizzo A First Glimpse on Cold-Adapted PCB-Oxidizing Bacteria in Edmonson Point Lakes (Northern Victoria Land, Antarctica) Water polychlorobiphenyls cold-adapted bacteria <i>bph</i>A gene Antarctic coastal lakes |
| title | A First Glimpse on Cold-Adapted PCB-Oxidizing Bacteria in Edmonson Point Lakes (Northern Victoria Land, Antarctica) |
| title_full | A First Glimpse on Cold-Adapted PCB-Oxidizing Bacteria in Edmonson Point Lakes (Northern Victoria Land, Antarctica) |
| title_fullStr | A First Glimpse on Cold-Adapted PCB-Oxidizing Bacteria in Edmonson Point Lakes (Northern Victoria Land, Antarctica) |
| title_full_unstemmed | A First Glimpse on Cold-Adapted PCB-Oxidizing Bacteria in Edmonson Point Lakes (Northern Victoria Land, Antarctica) |
| title_short | A First Glimpse on Cold-Adapted PCB-Oxidizing Bacteria in Edmonson Point Lakes (Northern Victoria Land, Antarctica) |
| title_sort | first glimpse on cold adapted pcb oxidizing bacteria in edmonson point lakes northern victoria land antarctica |
| topic | polychlorobiphenyls cold-adapted bacteria <i>bph</i>A gene Antarctic coastal lakes |
| url | https://www.mdpi.com/2073-4441/14/1/109 |
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