phytochrome

(noun)

any of a class of pigments that control most photomorphogenic responses in higher plants

Related Terms

  • chromophore
  • photoperiodism

Examples of phytochrome in the following topics:

  • The Phytochrome System and Red Light Response

    • Phytochromes have two photo-interconvertible forms: Pr and Pfr.
    • Together, the two forms represent the phytochrome system .
    • The phytochrome system acts as a biological light switch.
    • Plants use the phytochrome system to grow away from shade and toward light.
    • Plants also use the phytochrome system to adjust growth according to the seasons.
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