EnvReg213-page8 - wavelengths of light Phytochrome...

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Plant Environmental Regulators - 8 Lettuce germination rates relative to red and far-red light exposure The USDA team concluded that a molecule that had two interconvertable forms and was sensitive to both red and far-red light was responsible for the light sensitive responses in both flowering and in seed germination. Phytochrome is a blue or blue-green pigment that absorbs red and far-red
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Unformatted text preview: wavelengths of light. Phytochrome Absorption Spectrum Phytochrome is comprised of two identical protein molecules, each of which has a light absorbing portion, called the chromophore, and a protein portion, consisting of two domains: photoreceptor and kinase activity. Phytochrome structure Phytochrome chromophore...
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