Function and Photomorphogenesis of Arabidopsis Blue-light Photoreceptor CRY2

To monitor the quantity,direction,and duration of blue light signals,higher plants rely on a sophisticated photosensory system consisting of two blue-light receptors:cryptochrome and phototropin and various signal transduction factors.Blue-ray wavelengths are an effective response to Blue-ray and near-UV (320 ～400 nm).Therefore,Blue-ray receptor,were also known as a Blue-ray /near ultraviolet light receptor.Cryptochromes 2 (CRY2) encodes a nuclear protein,Blue-ray at the transcriptional level to regulate the protein and its role is to increase the sensitivity of Arabidopsis thaliana on the Blue-ray.Blue light regulate a wide range of responses in plants,including phototropism,chloroplast migration and stomatal opening.The molecular biology progress of a plant blue light response mutants are summarized,and the Blue-ray receptor and downstream signal transduction components in the role of plant development and response to blue light-induced molecular mechanisms are discussed.