Biologia Plantarum

, Volume 52, Issue 1, pp 161–164

Water stress induced changes in the leaf lipid composition of four grapevine genotypes with different drought tolerance

Authors

    • Laboratory of Grapevine Molecular Physiology
  • M. Gargouri
    • Laboratory of Grapevine Molecular Physiology
  • I. Nouairi
    • Laboratory of Characterization and Quality of Olive Oil
  • P. N. Moschou
    • Laboratory of Plant physiology and BiotechnologyUniversity of Crete
  • A. Ben Salem-Fnayou
    • Laboratory of Grapevine Molecular Physiology
  • A. Mliki
    • Laboratory of Grapevine Molecular Physiology
  • M. Zarrouk
    • Laboratory of Characterization and Quality of Olive Oil
  • A. Ghorbel
    • Laboratory of Grapevine Molecular Physiology
Brief Communication

DOI: 10.1007/s10535-008-0035-2

Cite this article as:
Toumi, I., Gargouri, M., Nouairi, I. et al. Biol Plant (2008) 52: 161. doi:10.1007/s10535-008-0035-2

Abstract

To dissect differences in both lipid accumulation and composition and the role of these modifications during drought stress, four grapevine cultivars exhibiting differential tolerance to drought were subjected to water shortage. Tolerant cultivars, Kahli Kerkennah and Cardinal, exhibited higher leaf water potential (Ψw), and lower lipid peroxidation compared to the sensitive cultivars Guelb Sardouk and Superior Seedless during stress. Total lipid amounts increased during stress only in the leaves of the tolerant cultivars. Drought induced increases in the ratios digalactosyldiacylglycerol/monogalactosyldiacylglycerol and phosphatidylcholine/phoshatidylethanolamine of almost all the drought stressed cultivars. Moreover, the overall analysis of the composition of fatty acids revealed that a linolenic acid was prevalent in grapevine and the unsaturation level of lipids increased under water stress in all the cultivars. Specific adjustments in the lipid composition during stress could compromise stress tolerance.

Additional key words

glycolipidsleaf water potentialperoxidationphospholipidsunsaturationVitis vinifera

Abbreviations

C16:0

palmitic acid

C16:1

palmitoleic acid

C16:3

palmitolenic acid

C18:0

stearic acid

C18:1

oleic acid

C18:2

linoleic acid

C18:3

linolenic acid

DBI

double bond index

DGDG

digalactosyldiacylglycerol

GL

glycolipids

MGDG

monogalactosyldiacylglycerol

PC

phosphatidylcholine

PE

phoshatidylethanolamine

PG

phosphatidylglycerol

PL

phospholipids

TLC

thin layer chromatography

Ψw

leaf water potential

Copyright information

© Institute of Experimental Botany, ASCR 2008