De novo transcriptomics reveal distinct phototransduction signaling components in the retina and skin of a color-changing vertebrate, the hogfish (Lachnolaimus maximus).

Published

Journal Article

Across diverse taxa, an increasing number of photoreceptive systems are being discovered in tissues outside of the eye, such as in the skin. Dermal photoreception is believed to serve a variety of functions, including rapid color change via specialized cells called chromatophores. In vitro studies of this system among color-changing fish have suggested the use of a phototransduction signaling cascade that fundamentally differs from that of the retina. Thus, the goal of this study was to identify phototransduction genes and compare their expression in the retina and skin of a color-changing fish, the hogfish Lachnolaimus maximus. De novo transcriptomics revealed the expression of genes that may underlie distinct, yet complete phototransduction cascades in L. maximus retina and skin. In contrast to the five visual opsin genes and cGMP-dependent phototransduction components expressed in the retina of L. maximus, only a single short-wavelength sensitive opsin (SWS1) and putative cAMP-dependent phototransduction components were expressed in the skin. These data suggest a separate evolutionary history of phototransduction in the retina and skin of certain vertebrates and, for the first time, indicate an expression repertoire of genes that underlie a non-retinal phototransduction pathway in the skin of a color-changing fish.

Full Text

Duke Authors

Cited Authors

  • Schweikert, LE; Fitak, RR; Johnsen, S

Published Date

  • May 2018

Published In

Volume / Issue

  • 204 / 5

Start / End Page

  • 475 - 485

PubMed ID

  • 29492668

Pubmed Central ID

  • 29492668

Electronic International Standard Serial Number (EISSN)

  • 1432-1351

International Standard Serial Number (ISSN)

  • 0340-7594

Digital Object Identifier (DOI)

  • 10.1007/s00359-018-1254-4

Language

  • eng