| Effect of calmodulin antagonist W7 on dynamic changes in endogenous ABA, polyamine contents and growth of tomato seedling roots under PEG stress |
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| DOI：10.7606/j.issn.1000-7601.2010.04.13 |
| Key Words: calmodulin antagonist W7 PEG stress tomato polyamine |
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| Abstract: |
| The effect of calmodulin antagonist W7 on the changes in endogenous ABA，polyamine contents and
growth of tomato seedling roots under hypoxia stress was studied. The results showed that after pre-treatment with 200 mmol/L W7 for 24 h before the hypoxia stress, the contents of free spermine and free spermidine were lower than those in tomato seedling roots by only hypoxia stress treatment ，which suggested that the pretreatment with W7 could lead to the decrease in polyamine contents in tomato roots compared to the only treatment of hypoxia stress, reduce the ability of cucumber against hypoxia stress , and make the plant growth become weaker. Finally, it was indicated that the effect of W7 was found smaller on‘Maofen802’ than on‘Huangguan’ cultivar of tomato, and‘Maofen802’ had greater capability against PEG stress. |
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