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Title

Changes in Salicylic and Abscisic Acid Contents during Heat Treatment and Their Effect on Thermotolerance of Grape Plants.

Authors

Wang, L. J.; Huang, W. D.; Liu, Y. P.; Zhan, J. C.

Abstract

Heat treatment (38°C) of young grape plants ( Vitis vinifera L., cv. Jingxiu) or leaf spraying with 100 µM salicylic acid (SA) increased leaf thermotolerance. Both treatments led to an increase in ABA content and a decrease in lipoxygenase (LOX) activity. ABA content showed a drastic rise by one hour after treatments and then sharply declined while LOX activity continuously decreased. In the course of heat treatment of grape plants, endogenous SA level and phenylalanine ammonia-lyase activity rapidly increased during the first hour, then declined. These results showed that endogenous SA and ABA can be involved in grape plant response to heat treatment resulted in improved thermotolerance.

Subjects

SALICYLIC acid; ABSCISIC acid; GRAPES; EFFECT of temperature on plants; LEAVES; LIPOXYGENASES; BOTANY

Publication

Russian Journal of Plant Physiology, 2005, Vol 52, Issue 4, p516

ISSN

1021-4437

Publication type

Academic Journal

DOI

10.1007/s11183-005-0076-8

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