Expression pattern of heat shock proteins during acute thermal stress in the antarctic sea urchin, Sterechinus neumayeri

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dc.contributor.authorGonzález, Karina
dc.contributor.authorGaitán-Espitia, Juan
dc.contributor.authorFont, Alejandro
dc.contributor.authorCárdenas, César A.
dc.contributor.authorGonzález-Aravena, Marcelo
dc.date.accessioned2018-11-30T19:59:00Z
dc.date.available2018-11-30T19:59:00Z
dc.date.issued2016
dc.description.abstractBackground: Antarctic marine organisms have evolved a variety of physiological, life-history and molecular adaptations that allow them to cope with the extreme conditions in one of the coldest and most temperaturestable marine environments on Earth. The increase in temperature of the Southern Ocean, product of climate change, represents a great challenge for the survival of these organisms. It has been documented that some Antarctic marine invertebrates are not capable of generating a thermal stress response by means of an increase in the synthesis of heat shock proteins, which could be related with their low capacity for acclimatization. In order to understand the role of heat shock proteins as a compensatory response in Antarctic marine species to projected scenarios of increased seawater temperatures, we assessed the expression of the genes Hsp90, Grp78, Hyou1 and Hsc70 in the Antarctic sea urchin Sterechinus neumayeri under three thermal treatments (1 °C, 3 °C and 5 °C), for a period of exposure of 1, 24 and 48 h. Results: The results obtained showed that these genes were expressed themselves in all of the tissues analyzed in a constitutive form. During acute thermal stress, an overexpression of the Hsp90, Grp78 and Hyou1 genes was observed in coelomocyte samples at 3 °C after 48 h, while in esophageal samples, an increase in Hsp90 and Grp78 expression was observed after 48 h. Thermal stress at 5 °C, in general, did not produce a significant increase in the expression of the genes that were studied. The expression of Hsp70 did not show modifications in its expression as a result of thermal stress. Conclusions: S. neumayeri is capable of overexpressing stress proteins as a result of thermal stress, however, this response is delayed and to a lesser degree compared to other Antarctic or temperate species. These results indicate that adult individuals could cope with the expected impacts caused by an increase in coastal sea temperatures in the Southern Ocean.es_ES
dc.description.sponsorshipFondecyt 1131001es_ES
dc.identifier.citationRev. Chil. His. Nat. 89, 2016es_ES
dc.identifier.issneISSN: 0717-6317
dc.identifier.urihttp://hdl.handle.net/20.500.11894/1190
dc.language.isoeses_ES
dc.publisherSociedad de Biología de Chilees_ES
dc.relation.ispartofRevista Chilena de Historia Naturales_ES
dc.relation.ispartofVol 89
dc.rightsCreative Commons Attribution 4.0 International licensees_ES
dc.subjectCienciaes_ES
dc.subjectClimate changees_ES
dc.subjectMarine invertebrateses_ES
dc.subjectAdaptationes_ES
dc.subjectMolecular chaperoneses_ES
dc.titleExpression pattern of heat shock proteins during acute thermal stress in the antarctic sea urchin, Sterechinus neumayeries_ES
dc.typeArtículoes_ES
dcterms.identifierDOI 10.1186/s40693-016-0052-z

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