Journal Article

Photosynthetic Electron Transport Regulates the Stability of the Transcript for the Protochlorophyllide Oxidoreductase Gene in the Liverwort, <i>Marchantia paleacea</i> var. <i>diptera</i>

Saeko Eguchi, Hiroyoshi Takano, Kanji Ono and Susumu Takio

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 43, issue 5, pages 573-577
Published in print May 2002 | ISSN: 0032-0781
Published online May 2002 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcf064
Photosynthetic Electron Transport Regulates the Stability of the Transcript for the Protochlorophyllide Oxidoreductase Gene in the Liverwort, Marchantia paleacea var. diptera

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The transfer of Marchantia paleacea var. diptera cells to darkness caused a reversible repression in the accumulation of transcript for a gene, por, encoding the NADPH: protochlorophyllide oxidoreductase (EC 1.3.1.33). The photosynthetic inhibitor DCMU and DBMIB repressed the accumulation in light. In the presence of transcription inhibitor cordycepin, not only incubation in the dark but also addition of DCMU or DBMIB in light stimulated the degradation of the por transcript. These findings suggest that photosynthetic electron transport is involved in regulating the stability of the por transcript.

Keywords: Key words: Chlorophyll — Marchantia — mRNA stability — Photosynthetic control — Protochlorophyllide oxidoreductase (EC 1.3.1.33).; Abbreviations: DBMIB, 2,5-dibromo-3-methyl-6-isopropyl-p-benzoquinone; POR, protochlorophyllide oxidoreductase.

Journal Article.  2793 words.  Illustrated.

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

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