Rhizoid differentiation in Spirogyra II. Photoreversibility of rhizoid induction by red and far-red light
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概要
- 論文の詳細を見る
The optimum light conditions for rhizoid formation in Spirogyra were determined. Red light was significantly effective on rhizoid formation while green, blue and violet lights had less effect. The dose-effect curve of red light was investigated and the minimum energy needed to saturate the effect was 8.1 Kergs・cm^<-2>. The effect of red light was completely reversed by subsequent irradiation with far-red light. The dose-effect curve of far-red light was also obtained. The repeatedly reversible photoresponses with red and far-red light strongly suggest that the photoreceptor of the rhizoid formation system is phytochrome. The existence of phytochrome in the Spirogyra cell was also demonstrated spectrophotometrically. The half time for the escape reaction from the reversal effect of far-red light was 2 2/3hr. There may be no pigment other than phytochrome mediating the photoreaction.
- 日本植物生理学会の論文
著者
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NAGATA Yoko
Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
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Nagata Yoko
Department Of Biology Faculty Of Science Osaka University
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Nagata Yoko
Department Of Applied Chemistry Graduate School Of Engineering Nagoya University
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