M. M. Musienko, V. V. Zhuk, L. M. Batsmanova

ESC Institute of Biology, Taras Shevchenko National University of Kyiv, Ukraine;
e-mail: zhuk_bas@voliacable.com

The signaling effect of 6-benzylaminopurine (BAP) on leaf mesophyll cells of Triticum aestivum L. under hyperthermic conditions was studied­. It was found that BAP regulated photosynthetic pigment, hydrogen peroxide content and activity of antioxidant enzymes, namely superoxide dismutase, ascorbate peroxidase and catalase under high-temperature conditions. The additive effect of BAP and high temperature on the activation of cell antioxidant systems was demonstrated. BAP regulated reducing processes in mesophyll leaf cells under high-temperature conditions.