Abstract
AbstractThe effect of Phytophthora infestans on the lipid content and composition as well as lipid acyl hydrolase activity in the potato tuber of two cultivars, Nysa – horizontal resistant and Bintje –susceptible were investigated.In the susceptible cultivar the infection resulted in: a qualitative changes in aminolipids, an increase in steroid content, an inconsiderable decrease in amount of glycolipids and a slight drop in FFA, no significant changes in composition of total, FA and slight loss in acyl hydrolase activity.The following changes were observed in the resistant cultivar: a considerable enhancement of steroid content (reached in about 400 %), a slight increase in amount of glycolipid, a rapid drop of acyl hydrolase activity and FFA content and a considerable increase in oleic acid level in total FA.In the response to both infection and aging in both cultivars no significant quantitative changes in lipid‐phosphorus and sulfolipids were noted.
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