Cold Adaptation Strategy of the Antarctic Cyanobacterium P. priestleyi ULC007
In Antarctica, Cyanobacteria are key primary producers and play a major role in the colonization of deglaciated habitats. Cyanobacterial mats are widespread in aquatic biotopes and often dominate the total phototrophic biomass. In order to gain further insights on the mechanisms underlying the ecolo...
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ftorbi:oai:orbi.ulg.ac.be:2268/230345 2024-10-13T14:01:32+00:00 Cold Adaptation Strategy of the Antarctic Cyanobacterium P. priestleyi ULC007 Durieu, Benoit Baurain, Denis Wilmotte, Annick Lara, Yannick InBios-CIP 2018-06-19 A3 https://orbi.uliege.be/handle/2268/230345 en eng https://www.polar2018.org/uploads/2/4/6/0/24605948/polar2018_abstractproceedings.pdf https://orbi.uliege.be/handle/2268/230345 info:hdl:2268/230345 Polar 2018, Where the Poles come together, Open Science Conference, Davos, Switzerland [CH], from 19-06-2018 to 23-06-2018 Antarctica Cyanobacteria Microbiology Genetics Ecology Polar Life sciences Environmental sciences & ecology Genetics & genetic processes Sciences du vivant Sciences de l’environnement & écologie Microbiologie Génétique & processus génétiques conference poster not in proceedings http://purl.org/coar/resource_type/c_18co info:eu-repo/semantics/conferencePoster 2018 ftorbi 2024-09-27T07:02:03Z In Antarctica, Cyanobacteria are key primary producers and play a major role in the colonization of deglaciated habitats. Cyanobacterial mats are widespread in aquatic biotopes and often dominate the total phototrophic biomass. In order to gain further insights on the mechanisms underlying the ecological success of Antarctic cyanobacteria, we studied the gene repertoire of Phormidesmis priestleyiULC007, a filamentous cyanobacterium isolated from shallow freshwater lake microbial mats in the Larsemann Hills. Here, we investigate the occurrence of genes involved in the cold stress response as a proxy to the adaptation to environmental conditions in Antarctica. We compare a selection of 42 PEGs (protein encoding genes) linked to cold adaptation in 72 cyanobacterial genomes. Polar strains have the highest number of copies of genes coding for fructose aldolase, chaperone Hsp, and universal stress protein and a high number of fatty acid desaturase and genes involved in exopolysaccharide (EPS) biosynthesis. To provide a better overview of the genetic mechanisms of adaptation to cold, we investigated the gene functional categories based on the RAST subsystems technology. Polar strains have the most occurrences for subsystems “Choline and Betain Biosynthesis”, “DNA repair”, “EPS biosynthesis” and “Heat shock DnaK gene cluster”. Our results underline the importance of these functions in the adaptation mechanisms of cyanobacteria to the polar environment. Conference Object Antarc* Antarctic Antarctica University of Liège: ORBi (Open Repository and Bibliography) Antarctic Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) The Antarctic |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Antarctica Cyanobacteria Microbiology Genetics Ecology Polar Life sciences Environmental sciences & ecology Genetics & genetic processes Sciences du vivant Sciences de l’environnement & écologie Microbiologie Génétique & processus génétiques |
spellingShingle |
Antarctica Cyanobacteria Microbiology Genetics Ecology Polar Life sciences Environmental sciences & ecology Genetics & genetic processes Sciences du vivant Sciences de l’environnement & écologie Microbiologie Génétique & processus génétiques Durieu, Benoit Baurain, Denis Wilmotte, Annick Lara, Yannick Cold Adaptation Strategy of the Antarctic Cyanobacterium P. priestleyi ULC007 |
topic_facet |
Antarctica Cyanobacteria Microbiology Genetics Ecology Polar Life sciences Environmental sciences & ecology Genetics & genetic processes Sciences du vivant Sciences de l’environnement & écologie Microbiologie Génétique & processus génétiques |
description |
In Antarctica, Cyanobacteria are key primary producers and play a major role in the colonization of deglaciated habitats. Cyanobacterial mats are widespread in aquatic biotopes and often dominate the total phototrophic biomass. In order to gain further insights on the mechanisms underlying the ecological success of Antarctic cyanobacteria, we studied the gene repertoire of Phormidesmis priestleyiULC007, a filamentous cyanobacterium isolated from shallow freshwater lake microbial mats in the Larsemann Hills. Here, we investigate the occurrence of genes involved in the cold stress response as a proxy to the adaptation to environmental conditions in Antarctica. We compare a selection of 42 PEGs (protein encoding genes) linked to cold adaptation in 72 cyanobacterial genomes. Polar strains have the highest number of copies of genes coding for fructose aldolase, chaperone Hsp, and universal stress protein and a high number of fatty acid desaturase and genes involved in exopolysaccharide (EPS) biosynthesis. To provide a better overview of the genetic mechanisms of adaptation to cold, we investigated the gene functional categories based on the RAST subsystems technology. Polar strains have the most occurrences for subsystems “Choline and Betain Biosynthesis”, “DNA repair”, “EPS biosynthesis” and “Heat shock DnaK gene cluster”. Our results underline the importance of these functions in the adaptation mechanisms of cyanobacteria to the polar environment. |
author2 |
InBios-CIP |
format |
Conference Object |
author |
Durieu, Benoit Baurain, Denis Wilmotte, Annick Lara, Yannick |
author_facet |
Durieu, Benoit Baurain, Denis Wilmotte, Annick Lara, Yannick |
author_sort |
Durieu, Benoit |
title |
Cold Adaptation Strategy of the Antarctic Cyanobacterium P. priestleyi ULC007 |
title_short |
Cold Adaptation Strategy of the Antarctic Cyanobacterium P. priestleyi ULC007 |
title_full |
Cold Adaptation Strategy of the Antarctic Cyanobacterium P. priestleyi ULC007 |
title_fullStr |
Cold Adaptation Strategy of the Antarctic Cyanobacterium P. priestleyi ULC007 |
title_full_unstemmed |
Cold Adaptation Strategy of the Antarctic Cyanobacterium P. priestleyi ULC007 |
title_sort |
cold adaptation strategy of the antarctic cyanobacterium p. priestleyi ulc007 |
publishDate |
2018 |
url |
https://orbi.uliege.be/handle/2268/230345 |
long_lat |
ENVELOPE(76.217,76.217,-69.400,-69.400) |
geographic |
Antarctic Larsemann Hills The Antarctic |
geographic_facet |
Antarctic Larsemann Hills The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Polar 2018, Where the Poles come together, Open Science Conference, Davos, Switzerland [CH], from 19-06-2018 to 23-06-2018 |
op_relation |
https://www.polar2018.org/uploads/2/4/6/0/24605948/polar2018_abstractproceedings.pdf https://orbi.uliege.be/handle/2268/230345 info:hdl:2268/230345 |
_version_ |
1812811441383669760 |