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Insect cold tolerance and repair of chill-injury at fluctuating thermal regimes: Role of 70kDa heat shock protein expression
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SYSNO ASEP 0333184 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Insect cold tolerance and repair of chill-injury at fluctuating thermal regimes: Role of 70kDa heat shock protein expression Title Chladová odolnost hmyzu a oprava poškození chladem: Úloha šokových proteinů z rodiny HSP 70kDa Author(s) Tollarová-Borovanská, Michaela (BC-A)
Lalouette, L. (FR)
Košťál, Vladimír (BC-A) RID, ORCIDNumber of authors 3 Source Title Cryo-letters. - : CryoLetters LLP - ISSN 0143-2044
Roč. 30, č. 5 (2009), s. 312-319Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords insect ; cold tolerance ; heat shock proteins Subject RIV ED - Physiology R&D Projects GA206/07/0269 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z50070508 - ENTU-I, BC-A (2005-2011) UT WOS 000272548000001 Annotation Expression of heat shock proteins has been proposed as an underlying mechanism of increased cold tolerance in insects exposed to fluctuating thermal regimes (FTRs) in comparison to constant low temperatures (CLTs). We found that the levels of /Pahsp70/ mRNA increase by up to 3 orders in the linden bugs, /Pyrrhocoris apterus/ exposed to FTR -5^(o)C (22h)/ 25^(o)C (2h). The 2h-long warm pulses, however, were not sufficient for accumulation of PaHSP70 protein and thus no significant difference in expression of PaHSP70 protein was detected between FTR and CLT regimes. Hence, we conclude that the accumulation of PaHSP70 protein is not the mechanism underlying the increased cold tolerance in /P. apterus/ at the particular FTR used in this study. The relevance of some other possible mechanisms is discussed. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2010
Number of the records: 1