Effects of Leaf Chilling on Thylakoid Functions, Measured at Room Temperature, in Cucumjs sativus L. and Oryza sativa L. :

NDLデジタルコレクション 被引用文献7件
  • Terashima,Ichiro
    Plant Environmental Biology Group. Research School of Biological Sciences, The Australian National University:(Present)Department of Botany, Faculty of Science, University of Tokyo
  • Huang,Lin-Ke
    Plant Environmental Biology Group, Research School of Biological Sciences, The Australian National University
  • Osmond,C.Barry
    Plant Environmental Biology Group, Research School of Biological Sciences, The Australian National University:(Present)Department of Botany. Duke University

この論文をさがす

抄録

Photosynthetic functions in leaves of cucumber (Cucumis sativus L.) and rice (Oryza sativa L.) were examined before and after various chilling treatments. Cucumber leaves lost the capacity for the photosynthetic oxygen evolution after chilling at 0℃ in the dark for 48 h. Thylakoids isolated from such leaves were not able to reduce dichloroindophenol (DCIP), but the addition of diphenylcarbazide (DPC), an electron donor to PS II, restored the ability to reduce DCIP, indicating that the site of damage is in the water-splitting machinery of PS II. In moderate light (500 μmol quanta・m^<-2>・s^<-1>), chilling of cucumber leaves at 5℃ for 5 h was sufficient to induce the complete loss of the capacity for photosynthetic oxygen evolution. Electron transport rates measured in thylakoids were unaltered, but thylakoids were totally permeable to protons. Since the addition of dicyclohexylcarbodiimide (DCCD) restored coupling and the capacity for proton uptake, the primary site of damage was deduced to be in the ATPase. In rice, both chilling treatments had barely any effect on thylakoid functions, although some negative effects was apparent in photosynthesis in leaves.

収録刊行物

被引用文献 (7)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ