Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes
Intensive efforts are being made to find new compounds with antimicrobial activity. The search for these novel bio-products in sparsely explored environments may be the key to providing solutions for many emerging problems. Antarctic environments are valuable locations for bioprospecting. In this st...
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ftconicet:oai:ri.conicet.gov.ar:11336/82355 2023-10-09T21:47:15+02:00 Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes Danilovich, Mariana Elizabeth Sanchez, Leandro Arturo Acosta, Federico Francisco Delgado, Osvaldo Daniel application/pdf http://hdl.handle.net/11336/82355 eng eng Springer info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00300-018-2295-4 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-018-2295-4 http://hdl.handle.net/11336/82355 Danilovich, Mariana Elizabeth; Sanchez, Leandro Arturo; Acosta, Federico Francisco; Delgado, Osvaldo Daniel; Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes; Springer; Polar Biology; 41; 7; 7-2018; 1417-1433 0722-4060 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANTARCTICA ANTIMICROBIAL BIOPROSPECTION ENZYME PSYCHROPHILE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s00300-018-2295-4 2023-09-24T20:23:38Z Intensive efforts are being made to find new compounds with antimicrobial activity. The search for these novel bio-products in sparsely explored environments may be the key to providing solutions for many emerging problems. Antarctic environments are valuable locations for bioprospecting. In this study, 63 cold-adapted bacterial strains of 6100 different colony morphotypes were isolated from Antarctic seawater samples around South Shetland and Deception islands. Strains were selected based on cold-active antimicrobial production and were grouped into 11 operational taxonomic units by internal spacer region-PCR and amplified ribosomal DNA restriction analysis. Isolates arbitrarily named 2D, 5D, and 6D were closely related to Halomonas titanicae, with 99.8, 98.9, and 96.7% identity according to 16S rDNA sequencing, and 99.7, 99.3, and 98.3% according to gyrB region sequence analysis, respectively. The isolate 18SH was closely related to Candida sake (99.2%) based on sequence analysis of the ITS1?5.8S rDNA?ITS2 and D1/D2 domain of 26S rDNA. Antimicrobials produced by isolates 2D, 5D, and 6D exhibited a low-molecular weight (< 6000 Da) and stability in wide pH and temperature ranges. When tested against foodborne and phytopathogenic bacteria, selected isolates exhibited a wide spectrum of activity. This work reports the isolation and identification of cold-adapted microorganisms with the ability to produce antimicrobial compounds with potential application in the pharmaceutical or in cold-chain management in the food industry. The current results highlight the potential of the Antarctic environment as a valuable and underexploited source of new antimicrobial molecules with exceptional properties for different biotechnological applications. Fil: Danilovich, Mariana Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina Fil: Sanchez, Leandro Arturo. Consejo Nacional de ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Polar Biology CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic The Antarctic Argentina Tucumán ENVELOPE(-63.200,-63.200,-64.683,-64.683) Polar Biology 41 7 1417 1433 |
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Open Polar |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
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language |
English |
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ANTARCTICA ANTIMICROBIAL BIOPROSPECTION ENZYME PSYCHROPHILE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
ANTARCTICA ANTIMICROBIAL BIOPROSPECTION ENZYME PSYCHROPHILE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Danilovich, Mariana Elizabeth Sanchez, Leandro Arturo Acosta, Federico Francisco Delgado, Osvaldo Daniel Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes |
topic_facet |
ANTARCTICA ANTIMICROBIAL BIOPROSPECTION ENZYME PSYCHROPHILE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Intensive efforts are being made to find new compounds with antimicrobial activity. The search for these novel bio-products in sparsely explored environments may be the key to providing solutions for many emerging problems. Antarctic environments are valuable locations for bioprospecting. In this study, 63 cold-adapted bacterial strains of 6100 different colony morphotypes were isolated from Antarctic seawater samples around South Shetland and Deception islands. Strains were selected based on cold-active antimicrobial production and were grouped into 11 operational taxonomic units by internal spacer region-PCR and amplified ribosomal DNA restriction analysis. Isolates arbitrarily named 2D, 5D, and 6D were closely related to Halomonas titanicae, with 99.8, 98.9, and 96.7% identity according to 16S rDNA sequencing, and 99.7, 99.3, and 98.3% according to gyrB region sequence analysis, respectively. The isolate 18SH was closely related to Candida sake (99.2%) based on sequence analysis of the ITS1?5.8S rDNA?ITS2 and D1/D2 domain of 26S rDNA. Antimicrobials produced by isolates 2D, 5D, and 6D exhibited a low-molecular weight (< 6000 Da) and stability in wide pH and temperature ranges. When tested against foodborne and phytopathogenic bacteria, selected isolates exhibited a wide spectrum of activity. This work reports the isolation and identification of cold-adapted microorganisms with the ability to produce antimicrobial compounds with potential application in the pharmaceutical or in cold-chain management in the food industry. The current results highlight the potential of the Antarctic environment as a valuable and underexploited source of new antimicrobial molecules with exceptional properties for different biotechnological applications. Fil: Danilovich, Mariana Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina Fil: Sanchez, Leandro Arturo. Consejo Nacional de ... |
format |
Article in Journal/Newspaper |
author |
Danilovich, Mariana Elizabeth Sanchez, Leandro Arturo Acosta, Federico Francisco Delgado, Osvaldo Daniel |
author_facet |
Danilovich, Mariana Elizabeth Sanchez, Leandro Arturo Acosta, Federico Francisco Delgado, Osvaldo Daniel |
author_sort |
Danilovich, Mariana Elizabeth |
title |
Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes |
title_short |
Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes |
title_full |
Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes |
title_fullStr |
Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes |
title_full_unstemmed |
Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes |
title_sort |
antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes |
publisher |
Springer |
url |
http://hdl.handle.net/11336/82355 |
long_lat |
ENVELOPE(-63.200,-63.200,-64.683,-64.683) |
geographic |
Antarctic The Antarctic Argentina Tucumán |
geographic_facet |
Antarctic The Antarctic Argentina Tucumán |
genre |
Antarc* Antarctic Antarctica Polar Biology |
genre_facet |
Antarc* Antarctic Antarctica Polar Biology |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00300-018-2295-4 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-018-2295-4 http://hdl.handle.net/11336/82355 Danilovich, Mariana Elizabeth; Sanchez, Leandro Arturo; Acosta, Federico Francisco; Delgado, Osvaldo Daniel; Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes; Springer; Polar Biology; 41; 7; 7-2018; 1417-1433 0722-4060 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00300-018-2295-4 |
container_title |
Polar Biology |
container_volume |
41 |
container_issue |
7 |
container_start_page |
1417 |
op_container_end_page |
1433 |
_version_ |
1779310232713822208 |