水杨酸对盐胁迫下多胺代谢的调节

The Salicylic Acid Regulation of Polyamine Metabolism Under Salt Stress

以鸭梨叶片为试材,研究了NaCl胁迫下多胺的代谢变化和水杨酸对NaCl胁迫下多胺代谢的调节作用。结果表明:NaCl处理后ADC活性明显上升,ODC活性均明显低于ADC,且ODC活性在NaCl处理后变化不明显。低浓度NaCl处理后多胺的含量增加,随着浓度的增加,多胺的含量不再增加或下降。SA提高了对照和NaCl处理ODC活性,对NaCl处理的ADC活性没有明显影响,但是提高了NaCl处理后游离多胺含量。

The regulation of SA to the changes of polyamine metabolism under salt stress in leaves of Yali Pear were studied.The results showed that under the NaCl treatment the ADC activity increased significantly,but the ODC activity did not have a significant increase and was lower than ADC activity.Polyamine contents increased under the NaCl treatment at the low concentrations,and did not increase or decrease with the NaCl concentration increasing.SA increased ODC activity in the control and NaCl treatment,did not significantly affect ADC activity,but increased the free polyamine contents under NaCl treatment.