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Information × Registration Number 0211U008462, 0108U007323 , R & D reports Title Role of light in amelioration of temperature stress popup.stage_title Head Svetlana M. Kochubey, Registration Date 01-06-2011 Organization Institute of Plant Physiology and Genetics NASU popup.description2 Effects of light on electron transport chain of pea chloroplasts exposured to short heating at 25 ° and 45 C were studied. It was shown that heating of leaves at 25 ° C in the dark caused a slight change in the electron transport chain, which is primarily manifested in decreased activity of photosystem 2. The use of light intensity of 5-10 thousand Lux lead to the restoration of the rate of attaining the maximum signal. Heating the leaves during 45 C in the dark led to a loss of activity of photosystem 2 by 60-70%, and disruption of the electron transport chain. The use of light intensity 5-10 thousands Lux led to the preservation of photosystem 2 activity at the level of 80-82% of control. Using the light of higher intensity leads to further inactivation of the electron transport chain. The study allowed to report the protective effect of light of low intensity 5-10 thousand Lux on the electron transport chain of chloroplasts. The reason for this may be the formation of a transmembrane proton gradient, which stabilizes structure of the chloroplasts. Product Description popup.authors Бондаренко Оксана Юріївна Казанцев Тарас Анатолійович Кочубей світлана Михайлівна Туменок Людмила Василівна Шевченко Віктор Валентинович popup.nrat_date 2020-04-02 Close