Mechanism of enhancing photosystem 2 thermoresistance in wheat plants by chlorocholine chloride

Abstract

It is shown that pretreatment of wheat seeds with chlorocholine chloride reduces inhibition of photosystem 2 activity in the first leaves of 10�d ayold wheat variety Moskovskaya 35 seedlings caused by heating at 39-41°C for 5-20 min and improves its poststress recovery, probably due to activation of antioxi� dant enzymes and increase in the level of low molecular weight antioxidants.