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Plant Physiology 73:636-638 (1983) © 1983 American Society of Plant Biologists Microsomal Membrane Changes during the Ripening of Apple Fruit 1Division of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
The changes in leakage and viscosity of microsomal membranes from apples (Malus sylvestris cv Calville de San Sauveur) at different stages of ripening were examined. These changes were correlated with those in the lipid composition of the membranes, sterols, phospholipids, and fatty acids of the phospholipids. The greatest changes in membrane properties occurred as the fruit reached its climacteric and this corresponded with a change in the sterol:phospholipid ratio in the membranes. Changes were also found in fatty acid unsaturation level, but primarily in the postclimacteric stage of ripening.
1 Supported by a grant from the United States-Israel Binational Agricultural Research and Development Fund (BARD). Contribution from the Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel. No. 533-E, 1982 series.
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