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Plant and Cell Physiology, 2001, Vol. 42, No. 6 576-582
© 2001 Oxford University Press

Characterization of cDNA of the Liverwort Phytochrome Gene, and Phytochrome Involvement in the Light-Dependent and Light-Independent Protochlorophyllide Oxidoreductase Gene Expression in Marchantia paleacea var. diptera

Takanori Suzuki ,1,3, Susumu Takio2, Isamu Yamamoto1 and Toshio Satoh1 1 Department of Biological Science, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, 739-8526 Japan 2 Department of Biological Science, Faculty of Science, Kumamoto University, Kurokami, Kumamoto, 860-8555 Japan

The cDNA of the phytochrome gene in the liverwort Marchantia paleacea var. diptera (MpdPHY1) was isolated. MpdPHY1 encoded a conventional phytochrome apoprotein. The MpdPHY1 transcript was accumulated in the dark and suppressed in the light. The degradation of the MpdPHY1 transcript by red light irradiation had red/far-red reversibility, suggesting that the liverwort phytochrome gene expression was regulated by a phytochrome. Northern blot analysis of the transcripts in cells irradiated by red/far-red light revealed that the liverwort phytochrome was involved in the expressions of chlB, chlL, chlN, or por, which encode subunits of light-independent and light-dependent protochlorophyllide oxidoreductase, respectively.

3 Corresponding author: E-mail, tsuz@hiroshima-u.ac.jp; Fax, +81-824-24-0734.


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