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  • Eilertsen, MariannDepartment of Biological Sciences, University of Bergen, Bergen, Norway (author)

Photoreception and transcriptomic response to light during early development of a teleost with a life cycle tightly controlled by seasonal changes in photoperiod

  • Article/chapterEnglish2022

Publisher, publication year, extent ...

  • 2022-12-12
  • Public Library of Science,2022
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:umu-202065
  • https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-202065URI
  • https://doi.org/10.1371/journal.pgen.1010529DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Light cues vary along the axis of periodicity, intensity and spectrum and perception of light is dependent on the photoreceptive capacity encoded within the genome and the opsins expressed. A global approach was taken to analyze the photoreceptive capacity and the effect of differing light conditions on a developing teleost prior to first feeding. The transcriptomes of embryos and alevins of Atlantic salmon (Salmo salar) exposed to different light conditions were analyzed, including a developmental series and a circadian profile. The results showed that genes mediating nonvisual photoreception are present prior to hatching when the retina is poorly differentiated. The clock genes were expressed early, but the circadian profile showed that only two clock genes were significantly cycling before first feeding. Few genes were differentially expressed between day and night within a light condition; however, many genes were significantly different between light conditions, indicating that light environment has an impact on the transcriptome during early development. Comparing the transcriptome data from constant conditions to periodicity of white light or different colors revealed overrepresentation of genes related to photoreception, eye development, muscle contraction, degradation of metabolites and cell cycle among others, and in constant light, several clock genes were upregulated. In constant white light and periodicity of green light, genes associated with DNA replication, chromatin remodeling, cell division and DNA repair were downregulated. The study implies a direct influence of light conditions on the transcriptome profile at early developmental stages, by a complex photoreceptive system where few clock genes are cycling.

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Added entries (persons, corporate bodies, meetings, titles ...)

  • Dolan, David W.P.Department of Informatics, University of Bergen, Bergen, Norway (author)
  • Bolton, Charlotte M.Institute of Aquaculture, University of Stirling, Stirling, United Kingdom (author)
  • Karlsen, RitaDepartment of Biological Sciences, University of Bergen, Bergen, Norway (author)
  • Davies, Wayne I. L.Umeå universitet,Umeå centrum för molekylär medicin (UCMM),School of Life Sciences, College of Science, Health and Engineering, La Trobe University, Melbourne, Australia(Swepub:umu)wada0005 (author)
  • Edvardsen, Rolf B.Institute of Marine Research, Bergen, Norway (author)
  • Furmanek, TomaszInstitute of Marine Research, Bergen, Norway (author)
  • Sveier, HaraldLerøy Seafood Group ASA, Bergen, Norway (author)
  • Migaud, HerveInstitute of Aquaculture, University of Stirling, Stirling, United Kingdom (author)
  • Helvik, Jon VidarDepartment of Biological Sciences, University of Bergen, Bergen, Norway (author)
  • Department of Biological Sciences, University of Bergen, Bergen, NorwayDepartment of Informatics, University of Bergen, Bergen, Norway (creator_code:org_t)

Related titles

  • In:PLOS Genetics: Public Library of Science18:121553-73901553-7404

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