Journal of Stress Physiology & Biochemistry, Vol. 9 No. 4 2013, pp. 279-288 ISSN 1997-0838
Original Text Copyright (cc) 2013 by   Kondakova, Ukolova, Voinikov, Borovskii



ORIGINAL ARTICLE
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Dehydrin Association with Supercomplexes of Pea Seedlings Mitochondria Under Hypothermia

Kondakova M.A., Ukolova I.V., Voinikov V.K. and Borovskii G.B.*

Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch of RAS, Irkutsk, Russia

*E-Mail:  borovskii@sifibr.irk.ru


Received July 22, 2013


The reaction of plant cell on many stressful conditions is accompanied by accumulation of protective proteins. Dehydrins are widespread in a plant kingdom and accumulated in reply to a drought, freezing, salt stress, and also high temperature. Earlier we found the accumulation of dehydrins in mitochondria of some plants under various stresses. This work aims to study the quantitative changes and localization of dehydrins in the mitochondria of pea seedlings under low temperature impact of varying intensity and duration. It has been found that the dehydrins  content  in  mitochondria  of  pea  seedlings  subjected  to  the  action  of  low temperatures increases. The maximum dehydrins content was founds after cold hardening which is accompanied by cryotolerance increasing. For the first time it was established that the part of dehydrins of plant mitochondria is localized in the several organellar supercomplexes.

Key words:   low-temperature stress, adaptation, plant mitochondria, Pisum sativum L., dehydrin, supercomplexes of mitochondrial proteins

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