The unsaturation of membrane lipids stabilizes photosynthesis against heat stress

Z. Gombos, Hajime Wada, É. Hideg, Norio Murata

Research output: Contribution to journalArticle

97 Citations (Scopus)

Abstract

The effect of the unsaturation of glycerolipids of thylakoid membranes on the heat tolerance of the photosynthetic evolution of oxygen was studied in vivo by mutation and transformation of fatty-acid desaturases in the cyanobacterium Synechocystis PCC6803. The experimental results indicate that elimination of dienoic lipid molecules decreases, to a small but distinct extent, the heat tolerance of photosynthetic oxygen evolution, but that elimination of trienoic lipid molecules has no effect on the heat tolerance. This conclusion contrasts with the previous hypothesis that the heat tolerance of photosynthesis is enhanced upon an increase in the level of saturation of membrane lipids. It is also shown that light does not affect the nature of the effect of lipid unsaturation on the heat tolerance of photosynthesis.

Original languageEnglish
Pages (from-to)563-567
Number of pages5
JournalPlant Physiology
Volume104
Issue number2
Publication statusPublished - Feb 1994

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Photosynthesis
Membrane Lipids
heat tolerance
heat stress
Hot Temperature
photosynthesis
lipids
Lipids
Fatty Acid Desaturases
Oxygen
Synechocystis
stearoyl-CoA desaturase
Thylakoids
Cyanobacteria
thylakoids
Thermotolerance
mutation
Light
Mutation
oxygen production

ASJC Scopus subject areas

  • Plant Science

Cite this

The unsaturation of membrane lipids stabilizes photosynthesis against heat stress. / Gombos, Z.; Wada, Hajime; Hideg, É.; Murata, Norio.

In: Plant Physiology, Vol. 104, No. 2, 02.1994, p. 563-567.

Research output: Contribution to journalArticle

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