Phytochrome-mediated responses of cells and protoplasts of green calli obtained from the leaves of a CAM plant
Autor: | J. Brulfert, J. N. Pierre, O. Queiroz, A. Mricha |
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Rok vydání: | 1990 |
Předmět: |
photoperiodism
Phytochrome fungi Kalanchoe blossfeldiana Phosphoenolpyruvate carboxylase activity food and beverages Plant Science General Medicine Biology biology.organism_classification chemistry.chemical_compound chemistry Biochemistry Callus Botany Crassulacean acid metabolism Malic acid Phosphoenolpyruvate carboxylase Agronomy and Crop Science |
Zdroj: | Plant Cell Reports. 8:664-666 |
ISSN: | 1432-203X 0721-7714 |
DOI: | 10.1007/bf00269988 |
Popis: | Green callus obtained from leaves of the CAM-inducible plant Kalanchoe blossfeldiana cv. Montezuma has previously been shown to perform C3-type photosynthesis under 16-h days and to shift to crassulacean acid metabolism (CAM) under 9-h days. The utilization of photoperiodic regimes (i.e. night interruptions by 30 min red light) established that CAM induction in the callus was under the control of phytochrome, as shown by measurements of CAM criteria: phosphoenolpyruvate carboxylase activity and malic acid pools. Short-term responsiveness of the callus cells to phytochrome modulations by monochromatic radiations was also established by the rapid changes observed in the diameter of the callus-derived protoplasts. These results provide further evidence that whole plant correlations are not necessary for phytochrome operativity. |
Databáze: | OpenAIRE |
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