Identification of Single-Nucleotide Polymorphisms in Differentially Expressed Genes Favoring Soybean Meal Tolerance in Higher-Growth Zebrafish (Danio rerio)

Ulloa, Pilar E.; Jilberto, Felipe; Lam, Natalia; Rincon, Gonzalo; Valenzuela, Luis; Cordova-Alarcon, Valentina; Hernandez, Adrian J.; Dantagnan, Patricio; Ravanal, Maria Cristina; Elgueta, Sebastian; Araneda, Cristian

Abstract

Genetic variability within the same fish species could confer soybean meal (SBM) tolerance in some individuals, thus favoring growth. This study investigates the single-nucleotide polymorphisms (SNPs) in differentially expressed genes (DEGs) favoring SBM tolerance in higher-growth zebrafish (Danio rerio). In a previous work, nineteen families of zebrafish were fed a fish meal diet (100FM control diet) or SBM-based diets supplemented with saponin (50SBM + 2SPN-experimental diet), from juvenile to adult stages. Individuals were selected from families with a genotype-by-environment interaction higher (170 +/- 18 mg) or lower (76 +/- 10 mg) weight gain on 50SBM + 2SPN in relation to 100FM. Intestinal transcriptomic analysis using RNA-seq revealed six hundred and sixty-five differentially expressed genes in higher-growth fish fed 50SBM + 2SPN diet. In this work, using these results, 47 SNPs in DEGs were selected. These SNPs were genotyped by Sequenom in 340 zebrafish that were fed with a 50SBM + 2SPN diet or with 100FM diet. Marker-trait analysis revealed 4 SNPs associated with growth in 3 immunity-related genes (aif1l, arid3c, and cst14b.2) in response to the 50SBM + 2SPN diet (p-value < 0.05). Two SNPs belonging to aif1l y arid3c produce a positive (+19 mg) and negative (-26 mg) effect on fish growth, respectively. These SNPs can be used as markers to improve the early selection of tolerant fish to SBM diet or other plant-based diets. These genes can be used as biomarkers to identify SNPs in commercial fish, thus contributing to the aquaculture sustainability.

Más información

Título según WOS: ID WOS:001262464000001 Not found in local WOS DB
Título de la Revista: MARINE BIOTECHNOLOGY
Volumen: 26
Número: 4
Editorial: Springer
Fecha de publicación: 2024
Página de inicio: 754
Página final: 765
DOI:

10.1007/s10126-024-10343-7

Notas: ISI