The Different Changes of Endogenous Polyamines in Tomato Plants th DifferentHeat-tolerance under High Temperatures

ACTA HORTICULTURAE SINICA ›› 2003, Vol. 30 ›› Issue (03): 281-286.

• 研究论文 • Previous Articles Next Articles

The Different Changes of Endogenous Polyamines in Tomato Plants th DifferentHeat-tolerance under High Temperatures

Du Yongchen;Mao Shengli; Wang Xiaoxuan; Zhu Dewei; Li Shude; Dai Shanshu; Gao Zhenhua

(Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences，Beijing 100081，China)

Received:2002-09-28 Revised:2003-02-11 Online:2003-06-25 Published:2003-06-25

Abstract

Abstract: The changes of endogenous polyamine levels induced by high temperatures were investigated in tomato plants with diferent heat-tolerance. Plants were treated at temperatures of 25／20oC (day and night)，33/25 ℃ and 38/28℃ at seedling or blooming stage. The results showed that the levels of spe rmidine and spermine in heat-tolerant varieties significantly increased with increase of growing tempe rature． and the maximum was observed at 38/28℃．In contrast， in heat-sensitive varieties，the highest levels of spermine and spermidine occurred at 33/25℃. The temperature treatment of 38/28℃ remarkedly decreased spermine and spermidine contents both in leaves
and flowers compared with 33/25℃ in heat．sensitive varieties．The putrscine content showed no regular changes both in temperature treatments and varieties. The involvement of polyamines in tomato heat tolerance is discussed.

Key words: Tomato, Heat-tolerance, Polyamine

CLC Number:

S 641.2

Du Yongchen;Mao Shengli;Wang Xiaoxuan;Zhu Dewei;Li Shude;Dai Shanshu;Gao Zhenhua. The Different Changes of Endogenous Polyamines in Tomato Plants th DifferentHeat-tolerance under High Temperatures[J]. ACTA HORTICULTURAE SINICA, 2003, 30(03): 281-286.

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The Different Changes of Endogenous Polyamines in Tomato Plants th DifferentHeat-tolerance under High Temperatures

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