DYNAMICS OF STRUCTURAL AND FUNCTIONAL CHANGES IN WHEAT ROOT CELLS UNDER THE ACTION OF
PROTONOPHORE
A. A. Ponomareva, 1 O. O. Polygalova, A. N. Tsentsevitsky
Institute of Biochemistry and Biophysics, Kazan Scientific Centre of RAS;
1 e-mail: ponomareva@mail.knc.ru
Structural and functional changes in wheat root cells during long-term action of a protonophore - carbonyl cyanide
3-chlorophenylhydrazone (CCCP) - were studied. It was demonstrated that CCCP affected the electrical potential and inward resistance
of cells, increased K+ ions release to the incubation medium, inhibits oxygen uptake for 1-4 h, which was followed by
oxygen uptake stimulation for 6 h of treatment. These changes of physiological processes were accompanied with a variety of
ultrastructural changes in cell organization, namely in the structure of mitochondria, endoplasmic reticulum canals, and the nucleus.
The role of protons is discussed, in particular, in the regulation of metabolic state of mitochondria, and in general regulation of structural
and fuctional conditions of cells.
Key words: wheat roots, protonophores, mitochondria, plasma membrane, proton
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