Action spectra for the light inhibition of flowering and its reversal inLemna paucicostata T-101
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Abstract
Lemna paucicostata Hegelm. T-101, a short-day plant, flowers when plants preirradiated with red light (R) for 24 h are subjected to inductive darkness for 72 h followed by two short-day cycles (6 h R+ 18 h dark). However, flowering is inhibited by blue-or far-red-light pulses applied at the beginning of the inductive dark period. These inhibitory light effects are fully reversible by a R pulse. The action spectra for the inhibitory light effect and for its reversal show that the light pulses act exclusively through phytochrome. It is concluded that a low level of Pfr at the beginning of the inductive dark period prevents flowering.
Key words
Action spectrum Flowering Lemna Photoperiodism Phytochrome Short-day plantAbbreviations
- R
red (light)
- B
blue (light)
- FR
far-red (light)
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References
- Hillman, W.S. (1959) Experimental control of flowering inLemna. I. General methods. Photoperiodism inL. perpusilla 6746. Am. J. Bot.46, 466–473Google Scholar
- Hillman, W.S. (1967) Blue light, phytochrome and the flowering ofLemna perpusilla 6746. Plant Cell Physiol.8, 467–473Google Scholar
- Ishiguri, Y., Oda, Y., Inada, K. (1975) Spectral dependences of flowering inLemna perpusilla andL. gibba. Plant Cell Physiol.16, 521–523Google Scholar
- Kandeler, R., Hügel, B. (1974) Wiederentdeckung der echtenLemna perpusilla Torr. und Vergleich mitL. paucicostata Hegelm. Plant Syst. Evol.123, 83–96Google Scholar
- Mancinelli, A.L., Rabino, I. (1978) The “high irradiance responses” of plant photomorphogenesis. Bot. Rev.44, 129–180Google Scholar
- Mohr, H. (1972) Lectures on photomorphogenesis. Springer, Berlin Heidelberg New YorkGoogle Scholar
- Nakayama, S. (1958) Photoreversible control of flowering at the start of inductive dark period inPharbitis nil. Ecol. Rev.14, 325–326Google Scholar
- Nakayama, S., Borthwick, H.A., Hendricks, S.B. (1960) Failure of photoreversible control of flowering inPharbitis nil. Bot. Gaz.121, 237–243Google Scholar
- Oda, Y. (1962) Effect of light quality on flowering ofLemna perpusilla 6746. Plant Cell Physiol.3, 415–417Google Scholar
- Ohtani, T., Ishiguri, Y. (1979) Inhibitory action of blue and far-red light in the flowering ofLemna paucicostata. Physiol. Plant.47, 255–259Google Scholar
- Purves, W.K. (1961) Dark reactions in the flowering ofLemna perpusilla 6746. Planta56, 684–690Google Scholar
- Sato, T., Oda, Y. (1977) Significance of timing and number of short-day cycles for initiation and subsequent development of floral buds inLemna perpusilla 6746. Plant Cell Physiol.18, 1041–1046Google Scholar
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