plant pigment protein that absorbs red light and then initiates physiological responses governing light sensitive processes such as germination, growth and flowering. Exists in two forms, pr and pfr, that are interconverted by light. A plant pigment that exists between two forms, [[phytochrome 660 and [[phytochrome 725. They switch between one or the other depending on what time of the day it is, daytime or night time.

Please contribute to this project, if you have more information about this term feel free to edit this page

This page was last modified on 3 October 2005, at 21:16. This page has been accessed 9,345 times. 
What links here | Related changes | Permanent link