Transcriptome profiling in fast versus slow-growing rainbow trout across seasonal gradients

BMC Genomics
R G DanzmannY Palti

Abstract

Circannual rhythms in vertebrates can influence a wide variety of physiological processes. Some notable examples include annual reproductive cycles and for poikilotherms, seasonal changes modulating growth. Increasing water temperature elevates growth rates in fishes, but increases in photoperiod regime can have similar influences even at constant temperature. Therefore, in order to understand the dynamics of growth in fish it is important to consider the background influence of photoperiod regime on gene expression differences. This study examined the influence of a declining photoperiod regime (winter solstice) compared to an increasing photoperiod regime (spring equinox) on white muscle transcriptome profiles in fast and slow-growing rainbow trout from a commercial aquaculture strain. Slow-growing fish could be characterized as possessing transcriptome profiles that conform in many respects to an endurance training regime in humans. They have elevated mitochondrial and cytosolic creatine kinase expression levels and appear to suppress mTOR-signaling as evidenced by elevated TSC2 expression, and they also have elevated p53 levels. Large fish display a physiological repertoire that may be consistent with strength/resistance ph...Continue Reading

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Citations

Oct 6, 2017·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Cristián A ValenzuelaAlfredo Molina

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Datasets Mentioned

BETA
PRJNA209213
SRS1019133
SRP026259

Methods Mentioned

BETA
transgenic
RNAseq
PCR
electrophoresis
Illumina sequencing
BioSample
Hi-Seq
Genotyping Array

Software Mentioned

Trimmomatic
NextGENe Merger Tool
Overlap Merger Tool
GSEA
GOSlim
Blast2GO
VB
BLASTN
Panther
edgeR

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