Resistance of Winter Wheat Seedlings to Short-term Freezing Temperature Influence May be Determined by Activation of Uncoupling Protein and ATP/ADP Antiporter

Grabelnych, O.I.; Borovik, O.A.; Pavlovskaya, N.S.; Pobezhimova, T.P.; Lyubushkina, I.V.; Korsukova, A.V.; Tauson, E.L.; Voinikov, V.K.

Journal of Stress Physiology & Biochemistry, Vol. 9 No. 4 2013, pp. 319-328 ISSN 1997-0838
Original Text Copyright (cc) 2013 by Grabelnych, Borovik, Pavlovskaya, Pobezhimova, Lyubushkina, Korsukova, Tauson, Voinikov

ORIGINAL ARTICLE

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Resistance of Winter Wheat Seedlings to Short-term Freezing Temperature Influence May be Determined by Activation of Uncoupling Protein and ATP/ADP Antiporter

O.I. Grabelnych^1,2*, O.A. Borovik¹, N.S. Pavlovskaya^1,2, T.P. Pobezhimova¹, I.V. Lyubushkina^1,2, A.V. Korsukova^1,2, E.L. Tauson¹, V.K. Voinikov¹

¹ Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch of RAS, Irkutsk, Russia
² Irkutsk State University, Irkutsk, Russia

*E-Mail: grolga@sifibr.irk.ru

Received July 30, 2013

Aftereffect of freezing temperature (-8 ° C, 1-6 h) on the content of reactive oxygen species (ROS), intactness mitochondria, their oxidative and phosphorylating activity and the contribution of uncoupling proteins (UCPs) and ATP/ADP antiporter to linoleate-induced mitochondrial respiration in winter wheat seedlings have been studied. It has been shown that the survival of seedlings during cold exposure is dependent on the activity of pUCP and ATP/ADP antiporter in mitochondria, the function of which under cold stress is probably the regulation of ROS content.

Key words: cold stress, reactive oxygen species, mitochondria, ATP/ADP antiporter, uncoupling pro teins, Triticum aestivum L