Blue Light Can Activates Stomatal Opening and...

Blue Light Can Activates Stomatal Opening and Closure

Author Name : Debraj Roy

ABSTRACT

Identification and characterization of plant photoreceptors active in the blue/UV-A areas of the spectrum have made significant strides in recent years. These photoreceptor cryptochrome 1, which resemble bacterial DNA photolyases in terms of structure and chromophore composition. However, they lack photolyase activity and have a C-terminal extension that is not found in photolyases. In addition to regulating cell elongation, they also interact with circadian rhythms and activate gene transcription, among many other functions. The protein produced in Arabidopsis, known as phototropin, is thought to function only as a photoreceptor for phototropism. It functions as a photoreceptor, kinase, and substrate for light-activated phosphorylation. It is a plasma membrane protein. Zeaxanthin, a carotenoid, may act as the chromophore for a photoreceptor that triggers stomatal opening in response to blue light. It is briefed, how these photoreceptors function as well as some of the stomatal activity is triggered to plant growth and development.

Key Words: phytochrome, cryptochrome, blue-light receptor, UV-A