Resilience and adaptation to extreme environments: the special case of Euplotes focardii, a strictly psychrophilic Antarctic ciliate
Antarctica and the Sothern Ocean are the coldest and harshest places on the Planet. Antarctic marine organisms face a number of environmental challenges, in particular the adverse effects on key biological processes of cold and oxidative stress, the latter due to increased oxygen solubility in cold...
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ftuncamerinoiris:oai:pubblicazioni.unicam.it:11581/426012 2024-01-28T10:00:59+01:00 Resilience and adaptation to extreme environments: the special case of Euplotes focardii, a strictly psychrophilic Antarctic ciliate Pucciarelli Sandra Ballarini Patrizia Mozzicafredddo Matteo Miceli Cristina Pucciarelli, Sandra Ballarini, Patrizia Mozzicafredddo, Matteo Miceli, Cristina 2018 ELETTRONICO http://hdl.handle.net/11581/426012 eng eng University of British Columbia country:CAN place:Vancouver ispartofbook:The 5th joint meeting of the Phycological Society of America & International Society of Protistologists The 5th joint meeting of the Phycological Society of America & International Society of Protistologists firstpage:13 lastpage:13 numberofpages:1 http://hdl.handle.net/11581/426012 info:eu-repo/semantics/conferenceObject 2018 ftuncamerinoiris 2024-01-03T17:44:39Z Antarctica and the Sothern Ocean are the coldest and harshest places on the Planet. Antarctic marine organisms face a number of environmental challenges, in particular the adverse effects on key biological processes of cold and oxidative stress, the latter due to increased oxygen solubility in cold waters. Over the past 50 years, the west coast of the Antarctic Peninsula has been one of the most rapidly warming parts on the Earth. Antarctic species are dramatically impacted by thermal changes. As single cells directly exposed to environmental cues, marine Antarctic protozoa represent excellent models to unravel the full suite of cellular functions that allowed the ecological success of psychrofiles and the biological responses to fast environmental changes. To optimally address resilience and adaptation, it is necessary to access to large sample sizes of sequences in order to enable evaluation via statistical and computational approaches. Only genome or transcriptome sequencing can provide such data sets. In this context, we are studying the Antarctic hypotrichous marine ciliate Euplotes focardii by an “omic” approach, focussing principally on the genome and transcriptome, the latter obtained under both physiological and stress conditions.The analysis of these large data set allowed us to approch the study from three different points of view: the analysis of gene expression under stress, the biochemical characterization of “cold-adapted” enzymes and the study of a bacterial consortium associated to this ciliate. Our results strongly indicate that ciliates represent a good model to unravel the evolutionary mechanisms that determine environmental adaptation. The biology of E. focardii highlights the impact of environmental constrain on evolution and adaptation and indicates the strategy used by this microorganism to survive in fast evolving environmental conditions. Conference Object Antarc* Antarctic Antarctic Peninsula Antarctica CAMPUS Pubblicazioni Scientifiche Unicam (Università di Camerino) Antarctic The Antarctic Antarctic Peninsula |
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CAMPUS Pubblicazioni Scientifiche Unicam (Università di Camerino) |
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ftuncamerinoiris |
language |
English |
description |
Antarctica and the Sothern Ocean are the coldest and harshest places on the Planet. Antarctic marine organisms face a number of environmental challenges, in particular the adverse effects on key biological processes of cold and oxidative stress, the latter due to increased oxygen solubility in cold waters. Over the past 50 years, the west coast of the Antarctic Peninsula has been one of the most rapidly warming parts on the Earth. Antarctic species are dramatically impacted by thermal changes. As single cells directly exposed to environmental cues, marine Antarctic protozoa represent excellent models to unravel the full suite of cellular functions that allowed the ecological success of psychrofiles and the biological responses to fast environmental changes. To optimally address resilience and adaptation, it is necessary to access to large sample sizes of sequences in order to enable evaluation via statistical and computational approaches. Only genome or transcriptome sequencing can provide such data sets. In this context, we are studying the Antarctic hypotrichous marine ciliate Euplotes focardii by an “omic” approach, focussing principally on the genome and transcriptome, the latter obtained under both physiological and stress conditions.The analysis of these large data set allowed us to approch the study from three different points of view: the analysis of gene expression under stress, the biochemical characterization of “cold-adapted” enzymes and the study of a bacterial consortium associated to this ciliate. Our results strongly indicate that ciliates represent a good model to unravel the evolutionary mechanisms that determine environmental adaptation. The biology of E. focardii highlights the impact of environmental constrain on evolution and adaptation and indicates the strategy used by this microorganism to survive in fast evolving environmental conditions. |
author2 |
Pucciarelli, Sandra Ballarini, Patrizia Mozzicafredddo, Matteo Miceli, Cristina |
format |
Conference Object |
author |
Pucciarelli Sandra Ballarini Patrizia Mozzicafredddo Matteo Miceli Cristina |
spellingShingle |
Pucciarelli Sandra Ballarini Patrizia Mozzicafredddo Matteo Miceli Cristina Resilience and adaptation to extreme environments: the special case of Euplotes focardii, a strictly psychrophilic Antarctic ciliate |
author_facet |
Pucciarelli Sandra Ballarini Patrizia Mozzicafredddo Matteo Miceli Cristina |
author_sort |
Pucciarelli Sandra |
title |
Resilience and adaptation to extreme environments: the special case of Euplotes focardii, a strictly psychrophilic Antarctic ciliate |
title_short |
Resilience and adaptation to extreme environments: the special case of Euplotes focardii, a strictly psychrophilic Antarctic ciliate |
title_full |
Resilience and adaptation to extreme environments: the special case of Euplotes focardii, a strictly psychrophilic Antarctic ciliate |
title_fullStr |
Resilience and adaptation to extreme environments: the special case of Euplotes focardii, a strictly psychrophilic Antarctic ciliate |
title_full_unstemmed |
Resilience and adaptation to extreme environments: the special case of Euplotes focardii, a strictly psychrophilic Antarctic ciliate |
title_sort |
resilience and adaptation to extreme environments: the special case of euplotes focardii, a strictly psychrophilic antarctic ciliate |
publisher |
University of British Columbia |
publishDate |
2018 |
url |
http://hdl.handle.net/11581/426012 |
geographic |
Antarctic The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_relation |
ispartofbook:The 5th joint meeting of the Phycological Society of America & International Society of Protistologists The 5th joint meeting of the Phycological Society of America & International Society of Protistologists firstpage:13 lastpage:13 numberofpages:1 http://hdl.handle.net/11581/426012 |
_version_ |
1789325635509813248 |