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Transcriptomic Analysis Reveals Molecular Mechanisms Underlying Growth Differences in the Chinese Sturgeon (Acipenser
Jianming Zhang1, Tian Tian1, Rui He1
1Chinese Sturgeon Research Institute, China Three Gorges Corporation, Yichang 443100, China.
Animals : an Open Access Journal From MDPI
|December 30, 2025
Summary
Researchers studied gene expression in fast-growing versus slow-growing Chinese sturgeon (Acipenser sinensis). Key metabolic genes were upregulated in fast growers, offering insights for conservation and breeding strategies of this endangered fish.
Area of Science:
- Aquatic biology
- Genomics
- Conservation genetics
Background:
- The Chinese sturgeon (Acipenser sinensis) is critically endangered, necessitating research into growth mechanisms for conservation.
- Understanding genetic factors influencing growth is vital for improving breeding efficiency and population management.
Purpose of the Study:
- To identify differentially expressed genes (DEGs) associated with growth rate differences in Chinese sturgeon.
- To elucidate the molecular pathways regulating growth in Acipenser sinensis.
Main Methods:
- Comparative transcriptome analysis of muscle tissues from fast-growing and slow-growing individuals.
- Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were performed on DEGs.
Main Results:
- Identified 258 DEGs, with 144 upregulated and 114 downregulated in fast-growing sturgeon.
- Enriched pathways included insulin signaling, adipocytokine signaling, and glycerolipid metabolism, indicating higher metabolic activity in fast growers.
- Downregulation of immune response and proteolysis genes suggests a potential growth-immunity trade-off.
Conclusions:
- Molecular mechanisms underlying growth rate variations in Chinese sturgeon involve differential gene expression in metabolic and signaling pathways.
- Findings provide a genetic basis for growth differences and identify potential targets for selective breeding and conservation of Acipenser sinensis.
