Effect of TMV induced systemic acquired resistance and removal of the terminal bud on membrane lipids of tobacco leaves

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11 Citations (Scopus)

Abstract

Significant alterations in lipid composition of leaf tissues occured only as a consequence of depletion. In the remaining leaves of decapitated plants an increase in phospholipid content and in the phospholipid/sterol molar ratio as well as an enhanced resistance to a non-host-specific toxin (fusaric acid) in ion leakage test suggest that the induction of resistance to TMV coincides with rejuvenation of leaf tissue. The phospholipid/sterol vesicles obtained from decapitated plants were more fluid than those from control plants, as measured by the diphenylhexatriene (DPH) fluorescence polarization technique (PDPH). In contrast, the changes in membrane lipids in leaves with SAR were statistically not significant. The degree of unsaturation of fatty acids in polar lipids did not change either in decapitated or in plants with SAR. The possible significance of these results is discussed in terms of oxyradical mediated mechanisms leading to tissue necrosis during hypersensitive reaction (HR).

Original languageEnglish
Pages (from-to)173-179
Number of pages7
JournalPlant Science
Volume66
Issue number2
DOIs
Publication statusPublished - 1990

Fingerprint

systemic acquired resistance
Tobacco
Membrane Lipids
Phospholipids
tobacco
buds
Sterols
Tissue
phospholipids
Fusaric Acid
lipids
sterols
Diphenylhexatriene
Rejuvenation
Lipids
leaves
Fluorescence Polarization
Plant Leaves
fusaric acid
hypersensitive response

ASJC Scopus subject areas

  • Plant Science
  • Biochemistry
  • Biotechnology

Cite this

@article{304c5da1a7494137acf42ad527b357c8,
title = "Effect of TMV induced systemic acquired resistance and removal of the terminal bud on membrane lipids of tobacco leaves",
abstract = "Significant alterations in lipid composition of leaf tissues occured only as a consequence of depletion. In the remaining leaves of decapitated plants an increase in phospholipid content and in the phospholipid/sterol molar ratio as well as an enhanced resistance to a non-host-specific toxin (fusaric acid) in ion leakage test suggest that the induction of resistance to TMV coincides with rejuvenation of leaf tissue. The phospholipid/sterol vesicles obtained from decapitated plants were more fluid than those from control plants, as measured by the diphenylhexatriene (DPH) fluorescence polarization technique (PDPH). In contrast, the changes in membrane lipids in leaves with SAR were statistically not significant. The degree of unsaturation of fatty acids in polar lipids did not change either in decapitated or in plants with SAR. The possible significance of these results is discussed in terms of oxyradical mediated mechanisms leading to tissue necrosis during hypersensitive reaction (HR).",
keywords = "decapitation, membrane fluidity, membrane lipid composition, resistance to TMV infection, systemic acquired resistance",
author = "A. {\'A}d{\'a}m and B. Barna and T. Farkas and Z. Kir{\'a}ly",
year = "1990",
doi = "10.1016/0168-9452(90)90201-X",
language = "English",
volume = "66",
pages = "173--179",
journal = "Plant Science",
issn = "0168-9452",
publisher = "Elsevier Ireland Ltd",
number = "2",

}

TY - JOUR

T1 - Effect of TMV induced systemic acquired resistance and removal of the terminal bud on membrane lipids of tobacco leaves

AU - Ádám, A.

AU - Barna, B.

AU - Farkas, T.

AU - Király, Z.

PY - 1990

Y1 - 1990

N2 - Significant alterations in lipid composition of leaf tissues occured only as a consequence of depletion. In the remaining leaves of decapitated plants an increase in phospholipid content and in the phospholipid/sterol molar ratio as well as an enhanced resistance to a non-host-specific toxin (fusaric acid) in ion leakage test suggest that the induction of resistance to TMV coincides with rejuvenation of leaf tissue. The phospholipid/sterol vesicles obtained from decapitated plants were more fluid than those from control plants, as measured by the diphenylhexatriene (DPH) fluorescence polarization technique (PDPH). In contrast, the changes in membrane lipids in leaves with SAR were statistically not significant. The degree of unsaturation of fatty acids in polar lipids did not change either in decapitated or in plants with SAR. The possible significance of these results is discussed in terms of oxyradical mediated mechanisms leading to tissue necrosis during hypersensitive reaction (HR).

AB - Significant alterations in lipid composition of leaf tissues occured only as a consequence of depletion. In the remaining leaves of decapitated plants an increase in phospholipid content and in the phospholipid/sterol molar ratio as well as an enhanced resistance to a non-host-specific toxin (fusaric acid) in ion leakage test suggest that the induction of resistance to TMV coincides with rejuvenation of leaf tissue. The phospholipid/sterol vesicles obtained from decapitated plants were more fluid than those from control plants, as measured by the diphenylhexatriene (DPH) fluorescence polarization technique (PDPH). In contrast, the changes in membrane lipids in leaves with SAR were statistically not significant. The degree of unsaturation of fatty acids in polar lipids did not change either in decapitated or in plants with SAR. The possible significance of these results is discussed in terms of oxyradical mediated mechanisms leading to tissue necrosis during hypersensitive reaction (HR).

KW - decapitation

KW - membrane fluidity

KW - membrane lipid composition

KW - resistance to TMV infection

KW - systemic acquired resistance

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U2 - 10.1016/0168-9452(90)90201-X

DO - 10.1016/0168-9452(90)90201-X

M3 - Article

VL - 66

SP - 173

EP - 179

JO - Plant Science

JF - Plant Science

SN - 0168-9452

IS - 2

ER -