Abstract
ABSTRACTAnalogous to the opsin-based receptors in animals, plants contain a diverse and elaborate set of photoreceptors to perceive a much wider spectrum of light and adapt to varying light conditions. Cryptochromes (CRYs), the blue/UV-A light sensing receptors, represent one such class of photoreceptors found ubiquitously in plants. Although structurally similar to DNA photolyases which could repair UV-induced DNA damage, photoactivated CRYs, instead, initiate signal transduction pathways, which lead to gene expression changes and eventually more overt photomorphogenic responses. Apart from the well-established roles of CRYs in regulating seedling de-etiolation, flowering time, and circadian clock, recent reports have highlighted their roles in controlling other aspects of plant development as well. This review attempts to describe the novel/atypical roles of CRYs that have emerged in the past few years, and also present an account of the various signaling components involved in CRY signal transduction pathway.
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