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. Grabelnych1,2*, O.A. Borovik1, N.S. Pavlovskaya1,2, T.P. Pobezhimova1, I.V. Lyubushkina1,2, A.V. Korsukova1,2, 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

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