Journal Article

Expression of NADPH-Protochlorophyllide Oxidoreductase Gene in Fully Green Leaves of Cucumber

Hirofumi Kuroda, Tatsuru Masuda, Naoki Fusada, Hiroyuki Ohta and Ken-ichiro Takamiya

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 41, issue 2, pages 226-229
Published in print February 2000 | ISSN: 0032-0781
Published online February 2000 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/41.2.226
Expression of NADPH-Protochlorophyllide Oxidoreductase Gene in Fully Green Leaves of Cucumber

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Photoreduction of protochlorophyllide a to chlorophyllide a that is catalyzed by NADPH-protochlorophyllide oxidoreductase (NPR) is only a light-dependent step in overall processes of biosynthesis of Chi in angiosperms. Unlike many other plants, in fully green leaves of cucumber the expression of only a single NPR gene of cucumber was positively regulated by light and developmental age of leaf, and also by diurnal and circadian rhythms. The single NPR gene was shown to be involved in Chi synthesis throughout of the vegetative growth of cucumber (in cotyledons and fully green leaves).

Keywords: Chlorophyll synthesis; Circadian rhythm; Cucumber; Cucumis sativus; Diurnal rhythm; NADPH-protochlorophyllide oxidoreductase (EC 1.3.1.33)

Journal Article.  0 words. 

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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