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THE PLANT MITOCHONDRIA UNDER STRESS AND ADAPTATION TO HYPO- AND HYPERTHERMIA
Original title
МИТОХОНДРИИ РАСТЕНИЙ ПРИ СТРЕССЕ И АДАПТАЦИИ К ГИПО- И ГИПЕРТЕРМИИ
Authors
O.I. Grabelnych1,2, T.P. Pobezhimova1, N.S. Zabanova1,2, O.A. Borovik1, V.K. Voinikov1
Contact information
1Siberian Institute of Plant Physiology and Biochemistry SB RAS, Irkutsk, Russia
2Irkutsk State University, Irkutsk, Russia E-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.
Pages
27-29
DOI
10.31255/978-5-94797-318-1-27-29
Abstract
A comparative analysis of the functional state of winter wheat mitochondria under the low and high hardening and damaging temperature has been performed. The content of reactive oxygen species (ROS) in mitochondria, the intactness outer membrane of mitochondria, their oxidative and phosphorylative activity, the content of stress proteins and the content and activity of alternative enzymes of the respiratory chain (alternative oxidase – AOX and rotenone-resistant NAD(P)H-dehydrogenases – NDB and NDA) has been studied. It is shown that the survival of plant cells in hypo- and hyperthermia depends of their ability to synthesize stress proteins, to limit the development of oxidative stress and to support the functional activity of mitochondria. The participation of alternative respiratory enzymes (AOX and NDB) is necessary for the development of adaptive reactions and cell functioning under temperature stress.