Transcriptional Response to Acute Thermal Exposure in Juvenile Chinook Salmon Determined by RNAseq
| Autor: | Bernie May, Nann A. Fangue, Katharine M. Tomalty, Gonzalo Rincon, Melinda R. Baerwald, Molly R. Stephens, Mariah H. Meek |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Gill
Gills Fish Proteins Cell signaling Protein Denaturation Down-Regulation Biology Protein degradation Investigations thermal tolerance Transcriptome Downregulation and upregulation Illumina Salmon Genetics Juvenile Animals Molecular Biology Gene Genetics (clinical) Ecology Sequence Analysis RNA Oncorhynchus tshawytscha Temperature gene discovery biology.organism_classification Cell biology Up-Regulation Oncorhynchus RNA Sequence Analysis Biotechnology |
| Zdroj: | G3 (Bethesda, Md.), vol 5, iss 7 G3: Genes|Genomes|Genetics |
| Popis: | Thermal exposure is a serious and growing challenge facing fish species worldwide. Chinook salmon (Oncorhynchus tshawytscha) living in the southern portion of their native range are particularly likely to encounter warmer water due to a confluence of factors. River alterations have increased the likelihood that juveniles will be exposed to warm water temperatures during their freshwater life stage, which can negatively impact survival, growth, and development and pose a threat to dwindling salmon populations. To better understand how acute thermal exposure affects the biology of salmon, we performed a transcriptional analysis of gill tissue from Chinook salmon juveniles reared at 12° and exposed acutely to water temperatures ranging from ideal to potentially lethal (12° to 25°). Reverse-transcribed RNA libraries were sequenced on the Illumina HiSeq2000 platform and a de novo reference transcriptome was created. Differentially expressed transcripts were annotated using Blast2GO and relevant gene clusters were identified. In addition to a high degree of downregulation of a wide range of genes, we found upregulation of genes involved in protein folding/rescue, protein degradation, cell death, oxidative stress, metabolism, inflammation/immunity, transcription/translation, ion transport, cell cycle/growth, cell signaling, cellular trafficking, and structure/cytoskeleton. These results demonstrate the complex multi-modal cellular response to thermal stress in juvenile salmon. |
| Databáze: | OpenAIRE |
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