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2001•Acta Phytopathologica SinicaRequires access

EFFECTS OF Fusarium oxysporum ON CONTENT OF MDA AND PROTECTIVE ENZYME ACTIVITIES IN DIFFERENT CULTIVARS OF WATERMELON

Jian Wang

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Abstract

The dynamic changes in content of malonaldehyde (MDA), superoxide dismutase (SOD) and catalase (CAT ) caused by infection Fusarium oxysporum Schlecht.in root cells of watermelon at seedling stage were studied. After infection, Kelunsheng, a resistant cultivar, showed a lower increasing rate of MDA content in cells of seedling than Zaohua, a susceptible cultivar. The resistant cultivar showed a lower decrease rate of SOD activity than the susceptible. Smaller change in CAT activity occurred in the resistant than the susceptible. The resistant cultivar, Kelunsheng, resumed basic normal metabolisms of MDA, SOD and CAT within a shorter time (48 hr). It demonstrated that Kelunsheng possessed a significantly larger self regulating ability than Zaohua.

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What this paper is about

The dynamic changes in content of malonaldehyde (MDA), superoxide dismutase (SOD) and catalase (CAT ) caused by infection Fusarium oxysporum Schlecht.in root cells of watermelon at seedling stage were studied. After infection, Kelunsheng, a resistant cultivar, showed a lower increasing rate of MDA content in cells of seedling than Zaohua, a susceptible cultivar. The resistant cultivar showed a lower decrease rate of SOD activity than the susceptible. Smaller change in CAT activity occurred in the resistant than the susceptible. The resistant cultivar, Kelunsheng, resumed basic normal metabolisms of MDA, SOD and CAT within a shorter time (48 hr). It demonstrated that Kelunsheng possessed a significantly larger self regulating ability than Zaohua.

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Available abstract

The dynamic changes in content of malonaldehyde (MDA), superoxide dismutase (SOD) and catalase (CAT ) caused by infection Fusarium oxysporum Schlecht.in root cells of watermelon at seedling stage were studied. After infection, Kelunsheng, a resistant cultivar, showed a lower increasing rate of MDA content in cells of seedling than Zaohua, a susceptible cultivar. The resistant cultivar showed a lower decrease rate of SOD activity than the susceptible. Smaller change in CAT activity occurred in the resistant than the susceptible. The resistant cultivar, Kelunsheng, resumed basic normal metabolisms of MDA, SOD and CAT within a shorter time (48 hr). It demonstrated that Kelunsheng possessed a significantly larger self regulating ability than Zaohua.

Key concepts: Cultivar, Fusarium oxysporum, Superoxide dismutase, Catalase, Seedling, Biology, Horticulture, Enzyme

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EFFECTS OF Fusarium oxysporum ON CONTENT OF MDA AND PROTECTIVE ENZYME ACTIVITIES IN DIFFERENT CULTIVARS OF WATERMELON — Research Paper | ScholarLens