Antimicrobial Activity of Marine Bacterial Symbionts Retrieved from Shallow Water Hydrothermal Vents
Marine sponges and other sessile macro-organisms were collected at a shallow water hydrothermal site in Eyjafjörður, Iceland. Bacteria were isolated from the organisms using selective media for actinomycetes, and the isolates were screened for antimicrobial activity. A total of 111 isolates revealed...
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ftoceanrep:oai:oceanrep.geomar.de:60395 2024-06-23T07:54:02+00:00 Antimicrobial Activity of Marine Bacterial Symbionts Retrieved from Shallow Water Hydrothermal Vents Eythorsdottir, Arnheidur Omarsdottir, Sesselja Einarsson, Hjorleifur 2016-06-05 text https://oceanrep.geomar.de/id/eprint/60395/ https://oceanrep.geomar.de/id/eprint/60395/1/Eythorsdottir%20et%20al.pdf https://doi.org/10.1007/s10126-016-9695-7 en eng Springer https://oceanrep.geomar.de/id/eprint/60395/1/Eythorsdottir%20et%20al.pdf Eythorsdottir, A., Omarsdottir, S. and Einarsson, H. (2016) Antimicrobial Activity of Marine Bacterial Symbionts Retrieved from Shallow Water Hydrothermal Vents. Marine Biotechnology, 18 (3). pp. 293-300. DOI 10.1007/s10126-016-9695-7 <https://doi.org/10.1007/s10126-016-9695-7>. doi:10.1007/s10126-016-9695-7 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2016 ftoceanrep https://doi.org/10.1007/s10126-016-9695-7 2024-06-11T14:18:41Z Marine sponges and other sessile macro-organisms were collected at a shallow water hydrothermal site in Eyjafjörður, Iceland. Bacteria were isolated from the organisms using selective media for actinomycetes, and the isolates were screened for antimicrobial activity. A total of 111 isolates revealed antimicrobial activity displaying different antimicrobial patterns which indicates production of various compounds. Known test strains were grown in the presence of ethyl acetate extracts from one selected isolate, and a clear growth inhibition of Staphylococcus aureus was observed down to 0.1 % extract concentration in the medium. Identification of isolates shows different species of Actinobacteria with Streptomyces sp. playing the largest role, but also members of Bacilli, Alphaproteobacteria and Gammaproteobacteria. Sponges have an excellent record regarding production of bioactive compounds, often involving microbial symbionts. At the hydrothermal vents, however, the majority of active isolates originated from other invertebrates such as sea anemones or algae. The results indicate that antimicrobial assays involving isolates in full growth can detect activity not visible by other methods. The macro-organisms inhabiting the Eyjafjörður hydrothermal vent area host diverse microbial species in the phylum Actinobacteria with antimicrobial activity, and the compounds responsible for the activity will be subject to further research. Article in Journal/Newspaper Iceland OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Eyjafjörður ENVELOPE(-18.150,-18.150,65.500,65.500) Marine Biotechnology 18 3 293 300 |
institution |
Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Marine sponges and other sessile macro-organisms were collected at a shallow water hydrothermal site in Eyjafjörður, Iceland. Bacteria were isolated from the organisms using selective media for actinomycetes, and the isolates were screened for antimicrobial activity. A total of 111 isolates revealed antimicrobial activity displaying different antimicrobial patterns which indicates production of various compounds. Known test strains were grown in the presence of ethyl acetate extracts from one selected isolate, and a clear growth inhibition of Staphylococcus aureus was observed down to 0.1 % extract concentration in the medium. Identification of isolates shows different species of Actinobacteria with Streptomyces sp. playing the largest role, but also members of Bacilli, Alphaproteobacteria and Gammaproteobacteria. Sponges have an excellent record regarding production of bioactive compounds, often involving microbial symbionts. At the hydrothermal vents, however, the majority of active isolates originated from other invertebrates such as sea anemones or algae. The results indicate that antimicrobial assays involving isolates in full growth can detect activity not visible by other methods. The macro-organisms inhabiting the Eyjafjörður hydrothermal vent area host diverse microbial species in the phylum Actinobacteria with antimicrobial activity, and the compounds responsible for the activity will be subject to further research. |
format |
Article in Journal/Newspaper |
author |
Eythorsdottir, Arnheidur Omarsdottir, Sesselja Einarsson, Hjorleifur |
spellingShingle |
Eythorsdottir, Arnheidur Omarsdottir, Sesselja Einarsson, Hjorleifur Antimicrobial Activity of Marine Bacterial Symbionts Retrieved from Shallow Water Hydrothermal Vents |
author_facet |
Eythorsdottir, Arnheidur Omarsdottir, Sesselja Einarsson, Hjorleifur |
author_sort |
Eythorsdottir, Arnheidur |
title |
Antimicrobial Activity of Marine Bacterial Symbionts Retrieved from Shallow Water Hydrothermal Vents |
title_short |
Antimicrobial Activity of Marine Bacterial Symbionts Retrieved from Shallow Water Hydrothermal Vents |
title_full |
Antimicrobial Activity of Marine Bacterial Symbionts Retrieved from Shallow Water Hydrothermal Vents |
title_fullStr |
Antimicrobial Activity of Marine Bacterial Symbionts Retrieved from Shallow Water Hydrothermal Vents |
title_full_unstemmed |
Antimicrobial Activity of Marine Bacterial Symbionts Retrieved from Shallow Water Hydrothermal Vents |
title_sort |
antimicrobial activity of marine bacterial symbionts retrieved from shallow water hydrothermal vents |
publisher |
Springer |
publishDate |
2016 |
url |
https://oceanrep.geomar.de/id/eprint/60395/ https://oceanrep.geomar.de/id/eprint/60395/1/Eythorsdottir%20et%20al.pdf https://doi.org/10.1007/s10126-016-9695-7 |
long_lat |
ENVELOPE(-18.150,-18.150,65.500,65.500) |
geographic |
Eyjafjörður |
geographic_facet |
Eyjafjörður |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
https://oceanrep.geomar.de/id/eprint/60395/1/Eythorsdottir%20et%20al.pdf Eythorsdottir, A., Omarsdottir, S. and Einarsson, H. (2016) Antimicrobial Activity of Marine Bacterial Symbionts Retrieved from Shallow Water Hydrothermal Vents. Marine Biotechnology, 18 (3). pp. 293-300. DOI 10.1007/s10126-016-9695-7 <https://doi.org/10.1007/s10126-016-9695-7>. doi:10.1007/s10126-016-9695-7 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s10126-016-9695-7 |
container_title |
Marine Biotechnology |
container_volume |
18 |
container_issue |
3 |
container_start_page |
293 |
op_container_end_page |
300 |
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1802645980554723328 |