The important functions of phytochrome are:
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It plays an important role in the growth responses to light.
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Phytochrome A is responsible for the germination and seedling de-etiolation.
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Phytochrome B is responsible for the day length detection in flowering.
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Phytochrome C helps in control of seedling responses to light signals.
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Phytochrome helps in adjusting their physiological responses to the seasons.
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Many genes for photosynthesis related proteins are regulated by phytochrome.
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It can elicit correct behavior for the lighting conditions in the plants environment.
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Phytochrome helps the plants to sense the colour of light.
