不同浓度NaCl处理对鸭梨叶片多胺代谢的影响

以鸭梨枝条为试材,研究盐胁迫下鸭梨叶片内多胺含量的变化。结果表明:随处理NaCl浓度的上升,鸭梨叶片内ADC活性明显上升,盐浓度过高时(150 mmol/L)酶活性不再上升。ODC活性明显低于ADC,盐处理前后活性变化不明显。TGase活性随处理盐浓度的上升呈上升趋势,盐浓度过高时活性略有下降。多胺氧化酶活性在盐处理后明显被激活,盐浓度过高时活性略有下降。随处理盐浓度的上升,游离Put含量和Spd含量明显上升,随处理盐浓度的提高含量逐渐下降;盐处理前后Spm含量变化不明显。结合态多胺总量在低浓度盐处理时含量上升,盐浓度过高时明显下降。

Effects of NaCl Treatment at Different Concentrations on Polyamine Metabolism in the Leaves of Yali Pear

Took Yali branches as matirials,treated with different concentration of NaCl,studied the changes of polyamine in leaves of Yali under salt stress.The results showed that the ADC activities rised along with the NaCl treatment concentration rise in leaves of Yali pear.When the NaCl concentration was too high(>150 mmol/L) the ADC activity no longer rises.The ODC activities were lower than ADC activities,and there were not any significant changes after the NaCl treatment.The TGase activities increased along wit...