A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Cold temperature represses daily rhythms in the liver transcriptome of a stenothermal teleost under decreasing day length
Tekijät: Jenni M. Prokkola, Mikko Nikinmaa, Mario Lewis, Katja Anttila, Mirella Kanerva, Kaisa Ikkala, Eila Seppänen, Irma Kolari, Erica H. Leder
Kustantaja: COMPANY OF BIOLOGISTS LTD
Julkaisuvuosi: 2018
Journal: Journal of Experimental Biology
Tietokannassa oleva lehden nimi: JOURNAL OF EXPERIMENTAL BIOLOGY
Lehden akronyymi: J EXP BIOL
Artikkelin numero: UNSP jeb170670
Vuosikerta: 221
Numero: 5
Sivujen määrä: 10
ISSN: 0022-0949
eISSN: 1477-9145
DOI: https://doi.org/10.1242/jeb.170670
Verkko-osoite: http://jeb.biologists.org/content/221/5/jeb170670
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/30713285
The climate-change-driven increase in temperature is occurring rapidly and decreasing the predictability of seasonal rhythms at high latitudes. It is therefore urgent to understand how a change in the relationship between photoperiod and temperature can affect ectotherms in these environments. We tested whether temperature affects daily rhythms of transcription in a cold-adapted salmonid using high-throughput RNA sequencing. Arctic char (Salvelinus alpinus) from a subarctic population were reared at a high and a low temperature (15 and 8 degrees C) for 1 month under natural, decreasing day length during late summer. Liver transcriptomes were compared between samples collected in the middle and towards the end of the light period and in the middle of the dark period. Daily variation in transcription was lower in fish from the low temperature compared with strong daily variation in warm-acclimated fish, suggesting that cold temperatures dampen the cycling of transcriptional rhythms under a simultaneously decreasing day length. Different circadian clock genes had divergent expression patterns, responding either by decreased expression or by increased rhythmicity at 15 degrees C compared with 8 degrees C. The results point out mechanisms that can affect the ability of fish to adapt to increasing temperatures caused by climate change.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
