Phytochrome
= Phytochrome
{title2=$P_r\rightleftharpoons P_{fr}$}
{wiki}
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>.<Biology 2e by Mary Ann Clark and others>[Biology 2e, §30.6 The Phytochrome System and the Red/Far-Red Response, Figure 30.38]{ref}