Recruitment of Rod Photoreceptors from Short-Wavelength-Sensitive Cones during the Evolution of Nocturnal Vision in Mammals
- Authors
- Kim, Jung-Woong; Yang, Hyun-Jin; Oel, Adam Phillip; Brooks, Matthew John; Jia, Li; Plachetzki, David Charles; Li, Wei; Allison, William Ted; Swaroop, Anand
- Issue Date
- Jun-2016
- Publisher
- CELL PRESS
- Citation
- DEVELOPMENTAL CELL, v.37, no.6, pp 520 - 532
- Pages
- 13
- Journal Title
- DEVELOPMENTAL CELL
- Volume
- 37
- Number
- 6
- Start Page
- 520
- End Page
- 532
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/6821
- DOI
- 10.1016/j.devcel.2016.05.023
- ISSN
- 1534-5807
1878-1551
- Abstract
- Vertebrate ancestors had only cone-like photoreceptors. The duplex retina evolved in jawless vertebrates with the advent of highly photosensitive rod-like photoreceptors. Despite cones being the arbiters of high-resolution color vision, rods emerged as the dominant photoreceptor in mammals during a nocturnal phase early in their evolution. We investigated the evolutionary and developmental origins of rods in two divergent vertebrate retinas. In mice, we discovered genetic and epigenetic vestiges of short-wavelength cones in developing rods, and cell-lineage tracing validated the genesis of rods from S cones. Curiously, rods did not derive from S cones in zebrafish. Our study illuminates several questions regarding the evolution of duplex retina and supports the hypothesis that, in mammals, the S-cone lineage was recruited via the Maf-family transcription factor NRL to augment rod photoreceptors. We propose that this developmental mechanism allowed the adaptive exploitation of scotopic niches during the nocturnal bottleneck early in mammalian evolution.
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Collections - College of Natural Sciences > Department of Life Science > 1. Journal Articles
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