Photosynthetic ability in dark-grown Reboulia hemisphaerica and Barbula unguiculata cells in suspension culture |
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Authors: | Takio Susumu Akita Chikako Ngumi Victoria Wambui Takami Shinji |
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Institution: | (1) Botanical Institute, Faculty of Science, Hiroshima University, Higashisenda-machi, Naka-ku, 730 Hiroshima, Japan |
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Abstract: | Suspension cultured cells of the liverwort, Reboulia hemisphaerica and of the moss, Barbula unguiculata were independently subcultured in the medium containing 2% glucose in the dark or in the light for more than one year, and the photosynthetic activities of the final cultures were determined. Throughout the culture period light-grown cells of both species contained high amount of chlorophyll (4 to 34 g mg–1 dry weight) and showed a high photosynthetic activity (10 to 84 mol O2 mg–1 chlorophyll h–1). Dark-grown cells of R. hemisphaerica showed the same level of chlorophyll content and photosynthetic O2 evolving activity as light-grown cells. Although chlorophyll content in dark-grown B. unguiculata cells was ten-fold lower than that in light-grown cells, the photosynthetic activity of these dark-grown cells was higher than that of light-grown cells based on chlorophyll content. |
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