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dc.contributor.authorJimenez-Gamez, Carlos 
dc.date.accessioned2014-04-10T11:26:34Z
dc.date.available2014-04-10T11:26:34Z
dc.date.created2014-04-10
dc.date.issued2014-04-10
dc.identifier.urihttp://hdl.handle.net/10630/7412
dc.description.abstractMitogen-activated protein kinases (MAPKs) are a group of cytoplasmic phosphoproteins that constitute the central core of the signalling network to respond to stress in most organisms. Their role in stress response in micro- and macroalgae is being studied by our research group in the recent years. In this study, it is demonstrated via short experiments (1 h in duration), the rapid activation of two MAPKs similar to p38 and JNK of mammalian cells, in the Arctic kelps Laminaria solidungula and Saccharina latissima exposed to temperature and UV stress. These MAPKs are highly phosphorylated in response to temperature and UV light. In S. latissima, both p38 and the JNK showed higher phosphorylation at 2° C than at 7° C, while the reverse response was shown for L. solidungula. In addition, a significant increase in phosphorylation of both kinases was found following exposure to UV radiation (UVR). Exposure to PAR + UVA + UVB induced higher phosphorylation than PAR + UVA in L. solidungula, especially at 7° C. In S. latissima, this response occurred only with JNK, and no differences in p38 phosphorylation between PAR + UVA and PAR + UVA + UVB at any temperature were observed. These results indicate the possible involvement of MAPK-like proteins in response to different kind of stress in Arctic kelps, and that their activation is species-specific. Results are discussed in the frame of global change, confronting the response of endemic Arctic species and Arctic cold-temperate species. New experiments of one week in duration and the use of specific inhibitors of MAPKs phosphorylation will allow to determine the cause-effect relationship between these phosphoproteins and survival in a warmer and higher UVR Arctic scenario.es_ES
dc.description.sponsorshipUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.es_ES
dc.language.isoenges_ES
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectAlgas - Efectos de la temperaturaes_ES
dc.subject.otherMAPKes_ES
dc.subject.otherMacroalgaees_ES
dc.subject.otherArctic environmentes_ES
dc.subject.otherUV stresses_ES
dc.subject.otherTemperature stresses_ES
dc.titleMap kinases mediate the response of arctic macroalgae to temperature and uv radiation stresses_ES
dc.typeinfo:eu-repo/semantics/otheres_ES
dc.centroFacultad de Cienciases_ES
dc.relation.eventtitleKongsfjorden Ecosystem Workshopes_ES
dc.relation.eventplaceHamn I Senja, Norwayes_ES
dc.relation.eventdate10-17 March 2014es_ES


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