Effect of gradual and shock chilling stress on abscisic acid, soluble sugars and antioxidant enzymes changes in 'Sultana' grapevine

Shima Sadat Beheshti Rooy, Ghasem Hosseini Salekdeh, Mehdi Ghabooli, Mansour Gholami, Ehsan Mohsenifard, Rouhollah Karimi*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Plants may show different behaviours during exposure to low temperature stress through various mechanisms. In this study, the chilling responses of 'Sultana' grapevine were investigated during a gradual chilling (2 °C/h) and also during a shock chilling (5 °C/h) from 24 °C to 4 °C. After artificial chilling stress, electrolyte leakage, lipid peroxidation, hydrogen peroxide production and antioxidant enzymes activities were measured in all plants leaves. Moreover, the potential of plant to accumulate abscisic acid and osmoregulants were compared under both gradual and shock chilling stresses. Based on the results, a significant difference was found between the electrolyte leakage, lipid peroxidation and hydrogen peroxide content of plants under two chilling regimes. These indices were found to be higher in shock chilling stressed plants compared with gradual chilling stressed vines because of the lower catalase, peroxidase and ascorbate peroxidase activities. Moreover, gradual chilling stressed vines exhibited higher accumulation of abscisic acid, proline and total phenolic compounds. The chlorophyll degradation and relative water content were lower in gradual cold stressed plants. Glucose and fructose, unlike sucrose showed higher concentration in gradual cold stressed vines. Totally, under gradual chilling stress grapevine plants showed better cold acclimation by lower oxidative stress and higher accumulation of osmoregulants in compared with shock chilling stressed vines.

Original languageEnglish
Pages (from-to)2211-2224
Number of pages14
JournalIranian Journal of Plant Physiology
Volume7
Issue number4
Publication statusPublished - 2017
Externally publishedYes

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Keywords

  • Chilling regimes
  • Cold stress
  • Grapevine
  • Metabolic changes

Cite this

Beheshti Rooy, S. S., Hosseini Salekdeh, G., Ghabooli, M., Gholami, M., Mohsenifard, E., & Karimi, R. (2017). Effect of gradual and shock chilling stress on abscisic acid, soluble sugars and antioxidant enzymes changes in 'Sultana' grapevine. Iranian Journal of Plant Physiology, 7(4), 2211-2224.