A Quantitative Approach to the Molecular Biology of Phytochrome Action
Recently there have been enormous advances in our understanding of two major aspects of photomorphogenesis. Firstly, the photoreceptor itself: detail is beginning to emerge of at least three molecular forms of phytochrome and this has already led to considerable speculation as to the physiological roles of these different molecular species. Secondly, our understanding of the mechanism of light-mediated control of gene transcription is advancing rapidly, with the identification of the regulatory cis-acting elements involved in photocontrol of transcription and the isolation of protein factors which interact with them. Most of this work has necessarily been qualitative in nature.
KeywordsNitrate Reductase Action Spectrum Nitrate Reductase Activity Fluence Rate Action Spectroscopy
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