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dc.contributor.authorDong, Yunweizh_CN
dc.contributor.authorMiller, Luke P.zh_CN
dc.contributor.authorSanders, Jon G.zh_CN
dc.contributor.authorSomero, George N.zh_CN
dc.contributor.author董云伟zh_CN
dc.date.accessioned2013-12-12T02:08:39Z
dc.date.available2013-12-12T02:08:39Z
dc.date.issued2008zh_CN
dc.identifier.citationBiological Bulletin,215(2):173-181zh_CN
dc.identifier.issn0006-3185zh_CN
dc.identifier.otherWOS:000260049800007zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/60679
dc.description.abstractLimpets of the genus Lottia occupy a broad vertical distribution on wave-exposed rocky shores, a range that encompasses gradients in the frequency and severity of thermal and desiccation stress brought on by aerial emersion. Using western blot analysis of levels of heat-shock protein 70 (Hsp70), we examined the heat-shock responses of four Lottia congeners: Lottia scabra and L. austrodigitalis, which occur in the high-intertidal zone, and L. pelta and L. scutum, which are restricted to the low- and mid-intertidal zones. Our results suggest distinct strategies of Hsp70 expression in limpets occupying different heights and orientations in the rocky intertidal zone. In freshly field-collected animals and in specimens acclimated at ambient temperature (approximate to 14 degrees C) for 14 days, the two high-intertidal species had higher constitutive levels of Hsp70 than the low- and mid-intertidal species. During aerial exposure to high temperatures, the two low-shore species and L. austrodigitalis exhibited an onset of Hsp70 expression at 28 degrees C; no induction of Hsp70 occurred in L. scabra. Our findings suggest that high-intertidal congeners of Lottia employ a "preparative defense" strategy involving maintenance of high constitutive levels of Hsp70 in their cells as a mechanism for protection against periods of extreme and unpredictable heat stress.zh_CN
dc.language.isoen_USzh_CN
dc.subjectACCLIMATION-INDUCED VARIATIONzh_CN
dc.subjectSHOCK-PROTEIN EXPRESSIONzh_CN
dc.subjectPHYSIOLOGICAL ECOLOGYzh_CN
dc.subjectMYTILUS-CALIFORNIANUSzh_CN
dc.subjectTHERMAL PHYSIOLOGYzh_CN
dc.subjectVERTICAL ZONATIONzh_CN
dc.subjectTEMPERATUREzh_CN
dc.subjectTEGULAzh_CN
dc.subjectLIMITSzh_CN
dc.subjectTHERMOTOLERANCEzh_CN
dc.titleHeat-Shock Protein 70 (Hsp70) Expression in Four Limpets of the Genus Lottia: Interspecific Variation in Constitutive and Inducible Synthesis Correlates With in situ Exposure to Heat Stresszh_CN
dc.typeArticlezh_CN


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