title: Photoreceptors mapping from past history till date.
abstract: The critical source of information in plants is light, which is perceived by receptors present in plants and animals. Receptors present in plant and animal system regulate important processes, and knowing the chromophores and signalling domains for each receptor could pave a way to trace out links between these receptors. The signalling mechanism for each receptor will give insight knowledge. This review has focussed on the photoreceptors from past history till date, that have evolved in the plant as well as in the animal system (to lesser extent). We have also focussed our attention on finding the links between the receptors by showing the commonalities as well as the differences between them, and also tried to trace out the links with the help of chromophores and signalling domain. Several photoreceptors have been traced out, which share similarity in the chromophore as well as in the signalling domain, which indicate towards the evolution of photoreceptors from one another. For instance, cryptochrome has been found to evolve three times from CPD photolyase as well as evolution of different types of phytochrome is a result of duplication and divergence. In addition, similarity between the photoreceptors suggested towards evolution from one another. This review has also discussed possible mechanism for each receptor i.e. how they regulate developmental processes and involve what kinds of regulators and also gives an insight on signalling mechanisms by these receptors. This review could also be a new initiative in the study of UVR8 associated studies.
authors.affiliation: Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of Allahabad, Allahabad 211002, India.
authors.forename: Parul
authors.initials: P
authors.lastname: Parihar
authors.affiliation: Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of Allahabad, Allahabad 211002, India.
authors.forename: Rachana
authors.initials: R
authors.lastname: Singh
authors.affiliation: Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of Allahabad, Allahabad 211002, India.
authors.forename: Samiksha
authors.initials: S
authors.lastname: Singh
authors.affiliation: DD Pant Interdisciplinary Research Laboratory, Department of Botany, University of Allahabad, Allahabad 211002, India.
authors.forename: Durgesh Kumar
authors.initials: DK
authors.lastname: Tripathi
authors.affiliation: DD Pant Interdisciplinary Research Laboratory, Department of Botany, University of Allahabad, Allahabad 211002, India.
authors.forename: Devendra Kumar
authors.initials: DK
authors.lastname: Chauhan
authors.affiliation: Govt. Ramanuj Pratap Singhdev Post Graduate College, Baikunthpur, Koriya 497335, Chhattisgarh, India. Electronic address: vijaypratap.au@gmail.com.
authors.forename: Vijay Pratap
authors.initials: VP
authors.lastname: Singh
authors.affiliation: Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of Allahabad, Allahabad 211002, India. Electronic address: profsmprasad@gmail.com.
authors.forename: Sheo Mohan
authors.initials: SM
authors.lastname: Prasad
mesh_terms: D000818:Animals; D006801:Humans; D008027:Light; D055519:Photoreceptors, Plant / Q000378:metabolism*; D015398:Signal Transduction / Q000528:radiation effects
chemical_list: D055519:Photoreceptors, Plant
keywords: Light; Photomorphogenesis; Photoreceptors; Sensing; Signalling; UVR8