Polar and non-polar species of the protozoan ciliate Euplotes behave differently in response to environmental oxidative stress
Polar coastal seawaters are saturated by high oxygen concentrations, which impose very effective adaptive strategies to strive against a continuous environmental oxidative stress. We studied these strategies in Euplotes nobilii (Ciliophora: Spirotrichea), a ciliate species dwelling in Antarctic and...
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Online Access: | http://hdl.handle.net/11581/333991 https://doi.org/10.1080/11250003.2014.947337 |
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ftuncamerinoiris:oai:pubblicazioni.unicam.it:11581/333991 2024-04-21T07:51:24+00:00 Polar and non-polar species of the protozoan ciliate Euplotes behave differently in response to environmental oxidative stress DOBRI, NICOLETA ALIMENTI, Claudio VALLESI, Adriana E. E. Ngueng Oumarou Dobri, Nicoleta E. E., Ngueng Oumarou Alimenti, Claudio Vallesi, Adriana 2014 STAMPA http://hdl.handle.net/11581/333991 https://doi.org/10.1080/11250003.2014.947337 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000342305800011 volume:81 issue:3 firstpage:409 lastpage:414 numberofpages:6 journal:THE ITALIAN JOURNAL OF ZOOLOGY http://hdl.handle.net/11581/333991 doi:10.1080/11250003.2014.947337 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84905318473 info:eu-repo/semantics/article 2014 ftuncamerinoiris https://doi.org/10.1080/11250003.2014.947337 2024-04-11T00:07:59Z Polar coastal seawaters are saturated by high oxygen concentrations, which impose very effective adaptive strategies to strive against a continuous environmental oxidative stress. We studied these strategies in Euplotes nobilii (Ciliophora: Spirotrichea), a ciliate species dwelling in Antarctic and Arctic coastal seawaters, in comparison with Euplotes raikovi, a sister species living in temperate seawaters. Cell samples of the two species were exposed to hydrogen peroxide (H2O2)-induced oxidative stress and analyzed for their survival rates and levels of expression of the genes encoding the enzyme methionine-sulfoxide reductase (Msr) A, which restores oxidized methionines (in their S form) of damaged proteins to the status of functional methionines. While 6 h of exposure to a 750-μM concentration of H2O2 did not affect E. nobilii viability, these conditions were lethal to E. raikovi. In correlation with this inter-specific difference in the cell survival to oxidative stress, the MsrA-coding genes of the two species showed different mechanisms of expression: constitutive in E. nobilii, elicited by induction in E. raikovi. Article in Journal/Newspaper Antarc* Antarctic CAMPUS Pubblicazioni Scientifiche Unicam (Università di Camerino) Italian Journal of Zoology 81 3 409 414 |
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CAMPUS Pubblicazioni Scientifiche Unicam (Università di Camerino) |
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ftuncamerinoiris |
language |
English |
description |
Polar coastal seawaters are saturated by high oxygen concentrations, which impose very effective adaptive strategies to strive against a continuous environmental oxidative stress. We studied these strategies in Euplotes nobilii (Ciliophora: Spirotrichea), a ciliate species dwelling in Antarctic and Arctic coastal seawaters, in comparison with Euplotes raikovi, a sister species living in temperate seawaters. Cell samples of the two species were exposed to hydrogen peroxide (H2O2)-induced oxidative stress and analyzed for their survival rates and levels of expression of the genes encoding the enzyme methionine-sulfoxide reductase (Msr) A, which restores oxidized methionines (in their S form) of damaged proteins to the status of functional methionines. While 6 h of exposure to a 750-μM concentration of H2O2 did not affect E. nobilii viability, these conditions were lethal to E. raikovi. In correlation with this inter-specific difference in the cell survival to oxidative stress, the MsrA-coding genes of the two species showed different mechanisms of expression: constitutive in E. nobilii, elicited by induction in E. raikovi. |
author2 |
Dobri, Nicoleta E. E., Ngueng Oumarou Alimenti, Claudio Vallesi, Adriana |
format |
Article in Journal/Newspaper |
author |
DOBRI, NICOLETA ALIMENTI, Claudio VALLESI, Adriana E. E. Ngueng Oumarou |
spellingShingle |
DOBRI, NICOLETA ALIMENTI, Claudio VALLESI, Adriana E. E. Ngueng Oumarou Polar and non-polar species of the protozoan ciliate Euplotes behave differently in response to environmental oxidative stress |
author_facet |
DOBRI, NICOLETA ALIMENTI, Claudio VALLESI, Adriana E. E. Ngueng Oumarou |
author_sort |
DOBRI, NICOLETA |
title |
Polar and non-polar species of the protozoan ciliate Euplotes behave differently in response to environmental oxidative stress |
title_short |
Polar and non-polar species of the protozoan ciliate Euplotes behave differently in response to environmental oxidative stress |
title_full |
Polar and non-polar species of the protozoan ciliate Euplotes behave differently in response to environmental oxidative stress |
title_fullStr |
Polar and non-polar species of the protozoan ciliate Euplotes behave differently in response to environmental oxidative stress |
title_full_unstemmed |
Polar and non-polar species of the protozoan ciliate Euplotes behave differently in response to environmental oxidative stress |
title_sort |
polar and non-polar species of the protozoan ciliate euplotes behave differently in response to environmental oxidative stress |
publishDate |
2014 |
url |
http://hdl.handle.net/11581/333991 https://doi.org/10.1080/11250003.2014.947337 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000342305800011 volume:81 issue:3 firstpage:409 lastpage:414 numberofpages:6 journal:THE ITALIAN JOURNAL OF ZOOLOGY http://hdl.handle.net/11581/333991 doi:10.1080/11250003.2014.947337 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84905318473 |
op_doi |
https://doi.org/10.1080/11250003.2014.947337 |
container_title |
Italian Journal of Zoology |
container_volume |
81 |
container_issue |
3 |
container_start_page |
409 |
op_container_end_page |
414 |
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1796934763873828864 |