Temperature shock tolerance and heat shock proteins in Arctic freshwater ostracod Candona rectangulata - preliminary results

• Published in: Polish Polar Research
• Main Authors: Wojtasik, Barbara, Kuczyńska-Wiśnik, Dorota
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Walter de Gruyter GmbH 2012
• Subjects: Ecology; Ecology, Evolution, Behavior and Systematics; Arctic; Polar Research; Spitsbergen
• Online Access: http://dx.doi.org/10.2478/v10183-012-0011-6; https://content.sciendo.com/view/journals/popore/33/2/article-p199.xml; https://www.degruyter.com/view/j/popore.2012.33.issue-2/v10183-012-0011-6/v10183-012-0011-6.pdf

Temperature shock tolerance and heat shock proteins in Arctic freshwater ostracod Candona rectangulata - preliminary results Candona rectangulata is an ostracod species common in cold (<15°C) shallow freshwater Arctic water bodies. This species is useful in palaeolimnological studies because only few known autecological data can be applied in reconstructions of palaeoclimate. Particular attention was paid to the temperature, which is the basic factor determining the geographic range of a species. In this study a wide tolerance of C. rectangulata to the temperature was demonstrated for the first time. Its high tolerance to the temperature changes seems to be based on induction of set of proteins belonging to the family of heat shock proteins. Using PAGE-SDS electrophoresis variation in the protein profile of non-model organism undergoing stress in the field (South Spitsbergen, near Stanisław Siedlecki Polish Polar Station) and in laboratory cultures was presented. These results could explain the eurythermic range of C. rectangulata and its good adaptation to the environmental conditions which normally do not exist in Arctic freshwater ponds.