AbstractPhotoreceptors 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. Here, a search for blue-light photoreceptors in the marine metagenome uncover a 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. Analyses of its genome reveal the possible mechanisms of light adaptation. 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.
KAUST Repository Item: Exported on 2021-06-21
Acknowledgements: This research was partially supported by the National BioResource Project (NBRP) from Japan Agency for Medical Research and Development (AMED). This research was supported by JSPS KAKENHI Grant Number 20K21438.
- Biochemistry, Genetics and Molecular Biology(all)
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