INFLUENCE OF HIGH TEMPERATURES ON ALTERNATIVE CYANIDE-RESISTANT OXIDASE FUNCTIONING IN MITOCHONDRIA FROM LEAVES OF SPRING WHEAT

Original title

ВЛИЯНИЕ ВЫСОКИХ ТЕМПЕРАТУР НА ФУНКЦИОНИРОВАНИЕ АЛЬТЕРНАТИВНОЙ ЦИАНИД-РЕЗИСТЕНТНОЙ ОКСИДАЗЫ В МИТОХОНДРИЯХ ИЗ ЛИСТЬЕВ ЯРОВОЙ ПШЕНИЦЫ

Authors

O.A. Borovik¹, O.I. Grabelnyh^{1, 2}

Contact information

1Siberian Institute of Plant Physiology and Biochemistry SB RAS, Irkutsk; email: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.

2Irkutsk State University, Irkutsk, Russia

Pages

17-18

DOI

10.31255/978-5-94797-318-1-17-18

Abstract

Heat hardening effectively increased the heat resistance of plants. It was noted changes in the content of HSP in the leaves of spring wheat after heat hardening and subsequent heat stress. Hardening resulted in an increase in the content of water-soluble carbohydrates in the leaves, which indicates an effective work of the photosynthetic apparatus in conditions of high temperatures. After heat hardening, an increase in the content of water-soluble carbohydrates was observed; the respiratory activity of the mitochondria did not change significantly, however, a significant increase in the contribution to the respiration of the alternative cyanide-resistant pathway (AP) was noted. The increase in AP contribution to mitochondrial respiration against the background of the increased content of water-soluble carbohydrates in the leaves indicates its important role in the adaptation of photosynthetic plants to high temperatures. It is likely that activation of the AP at high temperatures supports the functioning not only of the mitochondria, but also the photosynthetic apparatus of chloroplasts.