The FTO Gene Is Associated with Growth and Omega-3/-6 Ratio in Asian Seabass

Marine Biotechnology
Fei SunGen Hua Yue

Abstract

Polymorphisms in the FTO gene are associated with obesity and body mass index in humans and livestock. Little information of whether FTO plays an important role in aquaculture fish species is available. We cloned and characterized the FTO gene in an economically important food fish species: Asian seabass (Lates calcarifer). The full-length cDNA of the gene is 3679 bp, containing an ORF of 1935 bp encoding 644 amino acids, a 216 bp 5' UTR and a 1538 bp 3' UTR. The gene consisted of nine exons and eight introns and was 117,679 bp in length. Phylogenetic analysis revealed that the gene in Asian seabass was closely related to those of Japanese flounder and Nile tilapia. Analysis of its expressions using qRT-PCR showed that it was expressed ubiquitously, but was higher in the liver, stomach and intestine. Comparative analysis of the genomic sequences of part of intron 1 of the gene among 10 unrelated individuals identified two SNPs. Analysis of associations between SNPs and traits (i.e. growth, oil content, omega-3 and -6 contents) in an F2 family demonstrated that the two SNPs were significantly associated with growth, oil content, omega-3 content and omega-3/-6 ratio. Altogether, our data suggest that the gene or/and its linked ge...Continue Reading

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Citations

Mar 14, 2019·Marine Biotechnology·Bi Jun LiJun Hong Xia

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Methods Mentioned

BETA
PCR
genotyping
RNA-seq

Software Mentioned

DNAstar
PrimerSelect
Sequencher
MEGA
EditSeq
MAS

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