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- W102482959 abstract "【Objective】 The study was done to evaluate the relationship between polyamines metabolism and the resistance to drought in tomato,and to provide theoretical foundation for further research of plants' drought-resistance.【Method】 The changes in contents of endogenous polyamine(PAs) and metabolic enzyme activities in leaves and roots of tomato seedlings grown by hydroponic cultivation under different levels of water stress,which were induced by different polyethylene glycol(PEG6000) concentrations as 0(CK),50,75 and 100 g/L respectively,were studied.【Result】 Polyamines metabolism in leaves and roots of tomato seedlings was affected by water stress.The contents of PAs(Put,Spd,Spm) and activities of ADC,ODC and PAO in leaves and roots of tomato seedlings showed a trend of rise first,then fell with the prolongation of time.With the water stress degree intensifying,the rising amplitude of PAs contents and activities of ADC and ODC increased.【Conclusion】 There was a significant positive correlation between Put contents and the activities of ADC and ODC in the leaves and roots,which suggested that both ADC and ODC are the major pathway of Put biosynthesis in tomato seedlings under water stress.Moreover,it was indicated that there was a significant positive correlation between PAs(Spd and Spm) contents and PAO activity in leaves and roots of tomato seedlings,and polyamines metabolism in leaves and roots was correlated evidently.A close relationship between polyamines metabolism and tomato drought-resistance was found." @default.
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- W102482959 date "2009-01-01" @default.
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- W102482959 title "Effect of water stress on polyamines metabolism in leaves and roots of tomato seedlings" @default.
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