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Effects of BTH on the H_2O_2 Production and Related Enzyme Activities in Cucumber Leaves

Huanwen Meng

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Abstract

The activities of POD、SOD or CAT and H2O2 content were examined in cucumber leaves treated with BTH or inoculated with Pseudoperonospora cubensis f.sp.cucumerinum.Results showed H2O2 content in leaves treatment with BTH were increased significantly,and accumulated faster than control after inoculation.The result showed that H2O2 may be concerned with induced resistance against downy mildew.After treated with BTH,the activities of SOD or POD were enhanced while CAT activities were inhibited in leaves.The increase of H2O2 content may be related to the increase of SOD or POD activities and the decrease of CAT activities.That BTH induced defence gene expression through H2O2 was one of the main machinsm of induced resistance.

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What this paper is about

The activities of POD、SOD or CAT and H2O2 content were examined in cucumber leaves treated with BTH or inoculated with Pseudoperonospora cubensis f.sp.cucumerinum.Results showed H2O2 content in leaves treatment with BTH were increased significantly,and accumulated faster than control after inoculation.The result showed that H2O2 may be concerned with induced resistance against downy mildew.After treated with BTH,the activities of SOD or POD were enhanced while CAT activities were inhibited in leaves.The increase of H2O2 content may be related to the increase of SOD or POD activities and the decrease of CAT activities.That BTH induced defence gene expression through H2O2 was one of the main machinsm of induced resistance.

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Available abstract

The activities of POD、SOD or CAT and H2O2 content were examined in cucumber leaves treated with BTH or inoculated with Pseudoperonospora cubensis f.sp.cucumerinum.Results showed H2O2 content in leaves treatment with BTH were increased significantly,and accumulated faster than control after inoculation.The result showed that H2O2 may be concerned with induced resistance against downy mildew.After treated with BTH,the activities of SOD or POD were enhanced while CAT activities were inhibited in leaves.The increase of H2O2 content may be related to the increase of SOD or POD activities and the decrease of CAT activities.That BTH induced defence gene expression through H2O2 was one of the main machinsm of induced resistance.

Key concepts: Downy mildew, Point of delivery, Pseudoperonospora cubensis, Inoculation, Horticulture, Chemistry, Enzyme assay, Enzyme

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Effects of BTH on the H_2O_2 Production and Related Enzyme Activities in Cucumber Leaves — Research Paper | ScholarLens