Effects of Exogenous Sal icyl ic Acid on Activities of Some Enzymes andAntioxidants in Cucumber Leaves

ACTA HORTICULTURAE SINICA ›› 2004, Vol. 31 ›› Issue (5): 666-667.

• 研究报告 • Previous Articles Next Articles

Effects of Exogenous Sal icyl ic Acid on Activities of Some Enzymes andAntioxidants in Cucumber Leaves

Shi Qinghua;Zhu Zhujun^*;Xu Min;Qian Qiongqiu

( Department of Horticulture , Zhejiang University , Key Laboratory of Horticultural Plant Development and Biotechnology,Ministry of Agriculture , Hangzhou 310029 , China)

Received:2004-01-15 Revised:2004-03-02 Online:2004-10-25 Published:2004-10-25
Contact: Zhu Zhujun

Abstract

Abstract: Effects of different concentration of SA on activities of some enzymes and antioxidants in cucumber leaves were studied. The results indicated that activities of peroxidase ( POD) , polyphenol oxidase ( PPO) and phenylalanine ammonia-lyase (PAL) increased after different concentration of SA treatments , and the increasing level was the highest in 200μmol·L ^-1 . 100μmol·L^-1SA treatment significantly inhibited activities of IAA oxidase ( IAO) and ascorbate oxidase (AO) , while 200 μmol·L^-1 and 400 μmol·L^-1 SA treatment promoted them. AsA , GSH and GSSGcontents were increased in 100μmol·L^-1SA treatment.

Key words: Cucumber, Salicylic, Enzyme activity, Ascorbate, Glutathione

CLC Number:

S 642.2

Shi Qinghua;Zhu Zhujun;Xu Min;Qian Qiongqiu. Effects of Exogenous Sal icyl ic Acid on Activities of Some Enzymes andAntioxidants in Cucumber Leaves[J]. ACTA HORTICULTURAE SINICA, 2004, 31(5): 666-667.

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Effects of Exogenous Sal icyl ic Acid on Activities of Some Enzymes andAntioxidants in Cucumber Leaves

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