The different roles of chilling temperatures in the photoinhibition of photosystem I and photosystem II

Kintake Sonoike*

*この研究の対応する著者

研究成果: Article査読

70 被引用数 (Scopus)

抄録

The role of chilling temperatures on photoinhibition of photosystems I and II (PSI and PSII) under weak light has been examined in cucumber, a chilling-sensitive plant. The extent of PSII photoinhibition, determined by pulse-modulated fluorescence in vivo, is closely related to the redox state of the PSII electron acceptor Q(A), measured as a fluorescence parameter, 1 - q(p). On the other hand, the extent of PSI photoinhibition, which is only observed in chilling-sensitive plants at chilling temperatures, cannot be related to the redox state of Q(A), suggesting that the underlying mechanism is different from that of PSII photoinhibition. Chilling treatment at low photon flux densities is found to enhance cyclic electron flow around PSI. Both PSI photoinhibition and enhanced cyclic electron flow show similar temperature dependence, with the threshold temperature at 10°C.

本文言語English
ページ(範囲)136-141
ページ数6
ジャーナルJournal of Photochemistry and Photobiology B: Biology
48
2-3
DOI
出版ステータスPublished - 1999 2
外部発表はい

ASJC Scopus subject areas

  • 放射線
  • 放射線技術および超音波技術
  • 生物理学
  • 放射線学、核医学およびイメージング

フィンガープリント

「The different roles of chilling temperatures in the photoinhibition of photosystem I and photosystem II」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル