A cry from the krill.
Antarctic krill (Euphausia superba) inhabit a region with strong seasonality in several parameters, such as photoperiod, light intensity, extent of sea ice, and food availability. In particular, seasonal changes in environmental light regimes have been shown to strongly influence krill metabolism, r...
Published in: | Chronobiology International |
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Online Access: | http://hdl.handle.net/11577/2438924 https://doi.org/10.3109/07420521003697494 |
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ftunivpadovairis:oai:www.research.unipd.it:11577/2438924 2024-02-27T08:33:23+00:00 A cry from the krill. MAZZOTTA, GABRIELLA MARGHERITA DE PITTA', CRISTIANO BENNA, CLARA TOSATTO, SILVIO LANFRANCHI, GEROLAMO BERTOLUCCI C COSTA, RODOLFO Mazzotta, GABRIELLA MARGHERITA DE PITTA', Cristiano Benna, Clara Tosatto, Silvio Lanfranchi, Gerolamo Bertolucci, C Costa, Rodolfo 2010 STAMPA http://hdl.handle.net/11577/2438924 https://doi.org/10.3109/07420521003697494 eng eng info:eu-repo/semantics/altIdentifier/pmid/20524794 info:eu-repo/semantics/altIdentifier/wos/WOS:000282027100001 volume:27 issue:3 firstpage:425 lastpage:445 numberofpages:21 journal:CHRONOBIOLOGY INTERNATIONAL http://hdl.handle.net/11577/2438924 doi:10.3109/07420521003697494 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77953261311 info:eu-repo/semantics/article 2010 ftunivpadovairis https://doi.org/10.3109/07420521003697494 2024-01-31T17:46:40Z Antarctic krill (Euphausia superba) inhabit a region with strong seasonality in several parameters, such as photoperiod, light intensity, extent of sea ice, and food availability. In particular, seasonal changes in environmental light regimes have been shown to strongly influence krill metabolism, representing control signals for seasonal regulation of physiology of this key Southern Ocean species. Here, we report the identification of a cryptochrome gene, a cardinal component of the clockwork machinery in several organisms. EsCRY appears to be an ortholog of mammalian-like CRYs and clusters with the insect CRY2 subfamily. EsCRY has the canonical bipartite CRY structure, with a conserved N-terminal domain and a highly divergent C-terminus, that bears several binding motifs, some of them shared with insect CRY2 and others peculiar for EsCRY. We have evaluated the temporal expression of Escry both at mRNA and protein levels in individuals harvested from the Ross Sea at different times throughout the 24 h cycle during the Antarctic summer. We observed a daily fluctuation in abundance for Escry mRNA in the head, with high levels around 06:00 h, which is not mirrored by a cycle in the corresponding protein. Our findings represent a first step toward establishing the presence of an endogenous circadian time-keeping mechanism that might allow this organism to synchronize its physiology and behavior to the Antarctic light regimes. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Ross Sea Sea ice Southern Ocean Padua Research Archive (IRIS - Università degli Studi di Padova) Antarctic Ross Sea Southern Ocean The Antarctic Chronobiology International 27 3 425 445 |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
description |
Antarctic krill (Euphausia superba) inhabit a region with strong seasonality in several parameters, such as photoperiod, light intensity, extent of sea ice, and food availability. In particular, seasonal changes in environmental light regimes have been shown to strongly influence krill metabolism, representing control signals for seasonal regulation of physiology of this key Southern Ocean species. Here, we report the identification of a cryptochrome gene, a cardinal component of the clockwork machinery in several organisms. EsCRY appears to be an ortholog of mammalian-like CRYs and clusters with the insect CRY2 subfamily. EsCRY has the canonical bipartite CRY structure, with a conserved N-terminal domain and a highly divergent C-terminus, that bears several binding motifs, some of them shared with insect CRY2 and others peculiar for EsCRY. We have evaluated the temporal expression of Escry both at mRNA and protein levels in individuals harvested from the Ross Sea at different times throughout the 24 h cycle during the Antarctic summer. We observed a daily fluctuation in abundance for Escry mRNA in the head, with high levels around 06:00 h, which is not mirrored by a cycle in the corresponding protein. Our findings represent a first step toward establishing the presence of an endogenous circadian time-keeping mechanism that might allow this organism to synchronize its physiology and behavior to the Antarctic light regimes. |
author2 |
Mazzotta, GABRIELLA MARGHERITA DE PITTA', Cristiano Benna, Clara Tosatto, Silvio Lanfranchi, Gerolamo Bertolucci, C Costa, Rodolfo |
format |
Article in Journal/Newspaper |
author |
MAZZOTTA, GABRIELLA MARGHERITA DE PITTA', CRISTIANO BENNA, CLARA TOSATTO, SILVIO LANFRANCHI, GEROLAMO BERTOLUCCI C COSTA, RODOLFO |
spellingShingle |
MAZZOTTA, GABRIELLA MARGHERITA DE PITTA', CRISTIANO BENNA, CLARA TOSATTO, SILVIO LANFRANCHI, GEROLAMO BERTOLUCCI C COSTA, RODOLFO A cry from the krill. |
author_facet |
MAZZOTTA, GABRIELLA MARGHERITA DE PITTA', CRISTIANO BENNA, CLARA TOSATTO, SILVIO LANFRANCHI, GEROLAMO BERTOLUCCI C COSTA, RODOLFO |
author_sort |
MAZZOTTA, GABRIELLA MARGHERITA |
title |
A cry from the krill. |
title_short |
A cry from the krill. |
title_full |
A cry from the krill. |
title_fullStr |
A cry from the krill. |
title_full_unstemmed |
A cry from the krill. |
title_sort |
cry from the krill. |
publishDate |
2010 |
url |
http://hdl.handle.net/11577/2438924 https://doi.org/10.3109/07420521003697494 |
geographic |
Antarctic Ross Sea Southern Ocean The Antarctic |
geographic_facet |
Antarctic Ross Sea Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Ross Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Ross Sea Sea ice Southern Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/20524794 info:eu-repo/semantics/altIdentifier/wos/WOS:000282027100001 volume:27 issue:3 firstpage:425 lastpage:445 numberofpages:21 journal:CHRONOBIOLOGY INTERNATIONAL http://hdl.handle.net/11577/2438924 doi:10.3109/07420521003697494 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77953261311 |
op_doi |
https://doi.org/10.3109/07420521003697494 |
container_title |
Chronobiology International |
container_volume |
27 |
container_issue |
3 |
container_start_page |
425 |
op_container_end_page |
445 |
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1792045381206409216 |