Influence of Ethephon and 2,5-Norbornadiene on Antioxidative Enzymes and Proline Content in Salt-Stressed Spinach Leaves
2003
Demir, Y. | Oztürk, L.
The effects of ethephon, an ethylene generating compound, and 2,5-norbornadiene (NBD), an inhibitor of ethylene action, on peroxidase (POD; EC 1.11.1.7), catalase (CAT; EC 1.11.1.6), polyphenol oxidase (PPO; EC 1.14.18.1) activities and proline content in salt-stressed spinach leaves were investigated. POD and PPO activities were increased by NaCl + ethephon + NBD combination and reduced by NBD. Also, ethephon increased the CAT activity while ethephon + NBD reduced CAT activity. NaCl + ethephon increased proline content. The antagonistic effect of ethephon and NBD was seen on POD and PPO activity and proline accumulation, but was not on CAT activity.
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