Photoinhibition of photosystem I: Its physiological significance in the chilling sensitivity of plants

Research output: Contribution to journalArticle

202 Citations (Scopus)

Abstract

Photoinhibition was defined originally as the decrease in photosynthetic activity that occurs upon excess illumination. The site of photoinhibition has generally been considered to be located in PSII. However, a novel type of photoinhibition has recently been characterized in chilling-sensitive plants. This photoinhibition occurs under relatively weak illumination at chilling temperatures and the main site of damage is in PSI. The photoinhibition of PSI is initiated by the inactivation of the acceptor side, with the subsequent destruction of the reaction center and the degradation of the product of the psaB gene, which is one of the two major subunit polypeptides of the PSI reaction center complex. Chilling and oxidative stress (the presence of reactive species of oxygen) are characteristic requirements for the photoinhibition of PSI to vivo.

Original languageEnglish
Pages (from-to)239-247
Number of pages9
JournalPlant and Cell Physiology
Volume37
Issue number3
Publication statusPublished - 1996 Apr
Externally publishedYes

Fingerprint

Photosystem I Protein Complex
photosystem I
photoinhibition
Lighting
Reactive Oxygen Species
Oxidative Stress
Peptides
Temperature
lighting
Genes
cold treatment
reactive oxygen species
polypeptides
inactivation
oxidative stress
degradation
temperature

Keywords

  • Chilling sensitivity
  • Environmental stress
  • Photoinhibition
  • Photosynthesis
  • Photosystem I
  • Reactive species of oxygen

ASJC Scopus subject areas

  • Plant Science
  • Cell Biology
  • Physiology

Cite this

Photoinhibition of photosystem I : Its physiological significance in the chilling sensitivity of plants. / Sonoike, Kintake.

In: Plant and Cell Physiology, Vol. 37, No. 3, 04.1996, p. 239-247.

Research output: Contribution to journalArticle

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