Journal article
Transcriptomic responses of saline-adapted Nile tilapia (Oreochromis niloticus) to rearing in both saline and freshwater
Marine Genomics, Vol.60, pp.1-9
2021
Abstract
The Nile tilapia, Oreochromis niloticus, is an important species for global aquaculture. Recently, a single genetic line of Nile tilapia was developed using estimated breeding values (EBVs) for body weight under moderately saline water that showed significant improvement in growth performance. To explore the molecular mechanisms underlying this enhanced growth capacity, RNA-Seq was used to profile differences in gene expression in the liver and pituitary gland of high-and low-growth performance families of male Nile tilapia progeny, reared in either saline or freshwater environments. Comparisons of tissues from high-and low-EBV families, and also between fish reared in either saline or freshwater, revealed 142 and 2208 differentially expressed genes (DEGs), respectively. DEGs identified between the EBV groups comprised a number of genes involved in the regulation of growth and reproduction. We found an overexpression of hormone genes involved in growth-inhibition in the pituitary of Low-EBV tilapia including 2 somatostatin genes (GHIH), corticoliberin (CRH) and tachykinin-3-like protein. Furthermore, several genes associated with the cAMP pathway were underexpressed in low-EBV tilapia pituitary together with several early response genes. This study provides insight into the transcriptomic factors associated with growth performance in saline-adapted Nile tilapia reared in environments with high and low salinity levels and provides valuable knowledge for the future development of selection strategies to improve growth performance in this species.
Details
- Title
- Transcriptomic responses of saline-adapted Nile tilapia (Oreochromis niloticus) to rearing in both saline and freshwater
- Authors
- Daniel Powell (Author) - University of the Sunshine Coast, Queensland, GeneCology Research Centre - LegacyThoa Ngo Phu (Author) - University of the Sunshine Coast, Queensland, School of Science and Engineering - LegacyNguyen Nguyen (Author) - University of the Sunshine Coast, Queensland, GeneCology Research Centre - LegacyWayne Knibb (Author) - University of the Sunshine Coast, Queensland, School of Science and Engineering - LegacyAbigail Elizur (Author) - University of the Sunshine Coast, Queensland, GeneCology Research Centre - Legacy
- Publication details
- Marine Genomics, Vol.60, pp.1-9
- Publisher
- Elsevier BV
- DOI
- 10.1016/j.margen.2021.100879
- ISSN
- 1876-7478
- Organisation Unit
- Centre for Bioinnovation; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; School of Science and Engineering - Legacy; Office of Research
- Language
- English
- Record Identifier
- 99533808002621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Genetics & Heredity
- Marine & Freshwater Biology
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Source: InCites