Heat Shock Proteins in the Mechanisms of Stress Adaptation in Baikalian Amphipoda and Palaearctic Gammarus lacustris Sars: II. Low-Molecular (Small) HSP Family
Z. M. Shatilina, D. S. Bedulina, M. V. Protopopova, V. V. Pavlichenko, T. P. Pobezhimova, O. I. Grabel'nykh, M. A. Timofeyev
Keywords: stress resistivity, heat-shock proteins (HSP), low-molecular HSP amphiрoda, Baikal, endemics
Pages: 623-632
Abstract
The degree of particiрation of the heat shock proteins of the low-molecular (small) HTP family (lmHSP) in the mechanisms of therm- and toxoresistivity in fresh-water organisms was investigated. Four endemic species of Lake Baikal were studied: Gmelinoides fasciatus (Stebb.), Eulimnogammarus cyaneus (Dyb.), E. vittatus (Dyb.), Ommatogammarus flavus (Dyb.) and the representative of the palaearctic fauna Gammarus lacustris Sars. The effect of temperature factor was evaluated in course of exposure at temperatures 20, 25, 30 °C, the action of the toxic factor was evaluated by exposure in cadmium chloride solutions with the concentrations 50, 10, 5, 0.5 and 0.05 mg/l. A trend to increasing content of the proteins of lmHSP family was observed as a common feature of all the species investigated; however, species-specific peculiarities of the character of synthesis of the protein under investigation were observed. It was concluded that the lmHSP participate in the mechanisms of thermo- and toxoresistivity in the investigated amphipoda species.
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