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TOXIC EFFECT OF TERBIUM ON THE HIGH PLANT PHOTOSYSTEM II FUNCTION
Original title
ТОКСИЧЕСКИЙ ЭФФЕКТ ТЕРБИЯ НА ФУНКЦИОНИРОВАНИЕ ФОТОСИСТЕМЫ 2 ВЫСШИХ РАСТЕНИЙ
Authors
A.V. Loktyushkin, E.R. Lovyagina, B.K. Semin
Contact information
Federal State Budget Educational Institution of Higher Education M.V.Lomonosov Moscow State University, Moscow, Russia, Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.
Pages
475-478
DOI
10.31255/978-5-94797-319-8-475-478
Abstract
Effect of Tb3+ ions on the activity of PSII membranes prepared from Spinacia oleracea L. leafs was investigated. It was found that Tb3+ cations inhibit the reactions of O2 evolution and the reduction of ferrycyanide electron acceptor under illumination. Maximal decrease of the rate electron transport from water to electron acceptor (about 80%) was observed at Tb3+ concentration 2 mM. Concentrations of half inhibition of oxygen evolution and exogenous acceptor reduction were 249 µM and 269 µM respectively. The decrease of PSII activity resulted due to the terbium addition possibly can be determined by interaction of Tb3+ with donor side of PSII membranes.