A 44K microarray dataset of the changing transcriptome in developing Atlantic salmon (Salmo salar L.)

Area of Science:

• Aquaculture and Aquatic Sciences
• Genomics and Transcriptomics
• Developmental Biology

Background:

• Atlantic salmon (Salmo salar L.) is an economically and environmentally significant species.
• Understanding gene expression during early development is crucial for salmonid research.
• Gene content is well-characterized, but transcriptional dynamics require detailed study.

Purpose of the Study:

• To characterize gene expression changes during unperturbed early development of Atlantic salmon.
• To create a comprehensive transcriptional profile from fertilization through the parr stage.
• To provide a foundational dataset for future studies on salmonid gene regulation.

Main Methods:

• Collected Atlantic salmon samples at 17 time points (2-89 days post-fertilization).
• Extracted total RNA, synthesized cRNA, and hybridized to a 44K oligo salmonid microarray.
• Submitted quantified gene expression data to NCBI's Gene Expression Omnibus (GEO) under accession number GSE25938.

Main Results:

• Identified several thousand differentially regulated genes throughout the developmental period.
• Generated a large-scale gene expression dataset covering early Atlantic salmon development.
• Data is publicly accessible via NCBI GEO (GSE25938) for broad scientific use.

Conclusions:

• This work provides a comprehensive transcriptional characterization of early Atlantic salmon development.
• The expression profiles are valuable for annotating salmon genes and understanding developmental processes.
• The dataset serves as a reference for future studies investigating experimental variables in developing salmonids.