A family of light-sensing proteins with interconvertible red-absorbing and far-red-absorbing forms. Phytochrome links light perception to plant development, including the lettuce red and far-red germination experiment.[ref]
Biology 2e by Mary Ann Clark and others. Biology 2e, §30.6 The Phytochrome System and the Red/Far-Red Response, Figure 30.38
New to topics? Read the docs here!