| bioproject id |
PRJNA421052
to NCBI
|
| key word |
vision;SCHIFF-BASE COUNTERION;CONE VISUAL PIGMENTS;COLOR-VISION;AMINO-ACIDS;PHYLOGENETIC-RELATIONSHIPS;WAVELENGTH DISCRIMINATION;PERCIFORMES CICHLIDAE;SPECTRAL SENSITIVITY;ABSORPTION MAXIMUM;RHODOPSIN GENE |
| experiment type |
vision |
| publication |
Musilova, Z. , et al. "Vision using multiple distinct rod opsins in deep-sea fishes." Science 364. |
| description |
The goal of this study was to investigate the visual system evolution of teleost fishes with a special focus on deep-sea species. |
| abstract |
Vertebrate vision is accomplished through light-sensitive photopigments consisting of an opsin protein bound to a chromophore. In dim light, vertebrates generally rely on a single rod opsin [rhodopsin 1 (RH1)] for obtaining visual information. By inspecting 101 fish genomes, we found that three deep-sea teleost lineages have independently expanded their RH1 gene repertoires. Among these, the silver spinyfin (Diretmus argenteus) stands out as having the highest number of visual opsins in vertebrates (two cone opsins and 38 rod opsins). Spinyfins express up to 14 RH1s (including the most blueshifted rod photopigments known), which cover the range of the residual daylight as well as the bioluminescence spectrum present in the deep sea. Our findings present molecular and functional evidence for the recurrent evolution of multiple rod opsin-based vision in vertebrates. |
Gene
RNA