Abstract
The resistance mechanism of plants against diseases includes many molecules. This work tries to study role of lipids in the resistance mechanism of eggplant against Fusarium wilt disease. Two eggplant cultivars, the first alabaster, which is susceptible to Fusarium wilt, the second is alabaster F1 which is resistant to Fusarium wilt, were grown under Fusarium infection and the lipids profiling in the leaves of the two cultivars was estimated using TLC. The results show a significant difference between the lipids profiling in the two cultivars. The total lipids in the resistant plants increased under infection and decreased in the susceptible plants. Sterols, monogalactosyl diacylglycerol (MGDG) and digalactosyl diacylglycerol (DGDG) increased in the resistant plants while decreased in the susceptible plants under infection. The sterol ester increased under infection in the susceptible plants and decreased in the resistant plants. The free fatty acids and phosphatidic acid increased continuously in the susceptible cultivar, while increased only at 10th day after infection in the resistant plants, and then decreased at the 20th day after infection to be non-significantly higher than non-infected plants.
•Lipids profiling is very important in studying plant resistance mechanism.•The total lipids content in the resistant plants was higher than that in the susceptible under infection.•Sterols, MGDG and DGDG increased in the resistant plants while decreased in the susceptible plants under infection.•The sterol ester increased under infection in the susceptible plants and decreased in the resistant plants.•FFA and PA highly increased in susceptible plant, while in the resistant one increased firstly, and decreased with time.