Роль структурной организации фотосинтетического аппарата в устойчивости галофитов

Abstract

The specific features of the structural and functional organisation of the photosynthetic apparatus (PA) were studied in wild halophytes representing three strategies of salt tolerance: euhalophytes, crynohalophytes and glycohalophytes. The greatest activity of PA was noted in plants of S. perennans. The leaves of crino- and glycogalophytes were characterized by a significantly larger number of cells and a smaller volume. The size of the chloroplast and the content of photosynthetic pigments positively correlated with the content of membranes glycerolipids. In fatty acids (FA), the relative content of unsaturated FA was more than 60 %. The tendency of a decrease in the relative content of linolenic acid (C 18: 3), together with a decrease in the halophilicity of plants, has been revealed.