Effect of Heat Acclimation and SA Pretreat on the Ultrastructure of Mesophyll Cell in Grape Plants under Heat Shock

ACTA HORTICULTURAE SINICA ›› 2006, Vol. 33 ›› Issue (3): 491-495.

• 研究论文 • Previous Articles Next Articles

Effect of Heat Acclimation and SA Pretreat on the Ultrastructure of Mesophyll Cell in Grape Plants under Heat Shock

Liu Yueping^{1, 2};Huang Weidong^1*;Zhang Junhuan¹

(¹College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China;²Department of Biotechnology, Beijing Agricultural College, Beijing 102206, China)

Received:2005-08-03 Revised:2005-11-02 Online:2006-06-25 Published:2006-06-25

Abstract

Abstract: The effects of heat acclimation and salicylic acid (SA) pretreatment on the ultrastructure of mesophyll cell exposed to heat shock were investigated in young grape (Vitis vinifera L. ‘Jingxiu’) leaves.The results showed that the ultrastructure of normal leaveswas damaged remarkably in response to heat shock.The ultrastructure of heat2acclimated leaves had a little change, but heat acclimation pretreatment attenuated the destruction of ultrastructure in the following heat shock, principally showing in plasmolemma, vacuole
membrane, nuleus and chloroplast. SA pretreatment had almost no effect on the ultrastructure of mesophyll cell, but the degree of ultrastructure destruction was less than that of H₂O pretreatment in the following heat shock. Therefore, heat acclimation and SA pretreatment can both stabilize ultrastructure under heat shock and enhanced the thermotolerance of young grape plants.

Key words: Grape plant, Heat shock, Heat acclimation, Salicylic acid, Leaf, Ultrastructure

Liu Yueping;;Huang Weidong;Zhang Junhuan. Effect of Heat Acclimation and SA Pretreat on the Ultrastructure of Mesophyll Cell in Grape Plants under Heat Shock[J]. ACTA HORTICULTURAE SINICA, 2006, 33(3): 491-495.

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Effect of Heat Acclimation and SA Pretreat on the Ultrastructure of Mesophyll Cell in Grape Plants under Heat Shock

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