Kinetics of phytochrome decay inAmaranthusseedlings

摘要

InAmaranthusseedlings the disappearance of the unstablePfrform of phytochrome does not involve dark reversion toPr. The rate constant for the decay of total phytochrome under continuous illumination is directly related to the proportion in thePfrform. This relationship allows calculations to be made of the proportion ofPfrunder continuous far-red illumination where the amount is too low to be measured directly.