Unveiling of a novel bifunctional photoreceptor, Dualchrome1, isolated from a cosmopolitan green alga
KAUST DepartmentBioscience Program
Computational Bioscience Research Center (CBRC)
Biological and Environmental Sciences and Engineering (BESE) Division
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Permanent link to this recordhttp://hdl.handle.net/10754/667664
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AbstractAbstract Photoreceptors are conserved in green algae to land plants, and regulate various developmental stages. In the ocean, blue light penetrates deeper than red light, and blue-light sensing is key to adapting to marine environments. A search for blue-light photoreceptors in the marine metagenome uncovered a novel chimeric gene composed of a phytochrome and a cryptochrome (Dualchrome1, DUC1) in a prasinophyte, Pycnococcus provasolii. DUC1 detects light within the orange/far-red and blue spectra, and acts as a dual photoreceptor. Its complete genome revealed that P. provasolii facilitates light adaptation mechanisms via pheophorbide a oxygenase (Pao) and prasinoxanthin. Genes for the light-harvesting complex (LHC) are duplicated and transcriptionally regulated under monochromatic orange/blue light, suggesting P. provasolii has acquired environmental adaptability to a wide range of light spectra and intensities.
CitationMakita, Y., Suzuki, S., Fushimi, K., Shimada, S., Suehisa, A., Hirata, M., … Matsui, M. (2020). Unveiling of a novel bifunctional photoreceptor, Dualchrome1, isolated from a cosmopolitan green alga. doi:10.21203/rs.3.rs-88004/v1
SponsorsWe thank Dr. S. Ota (NIES, Japan) for the FCM analyses. This research was partially supported by the National BioResource Project (NBRP) from Japan Agency for Medical Research and Development (AMED).
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