Effect of polymorphism within miRNA-1606 gene on growth and carcass traits in chicken.
Genetic variations in microRNAs (miRNAs) including primary miRNAs, precursor miRNAs and mature miRNAs can lead to phenotypic variation by altering the biogenesis of miRNAs and/or their binding to target mRNAs. Increasing functional studies suggest that polymorphisms occurring in miRNAs can lead to phenotypic variation in farm animal. Here, we identified a single nucleotide polymorphism (SNP) located in the precursor of chicken miRNA-1606 gene. The association study on body indexes, body weight at different growth stages, and carcass traits was performed in a Gushi-Anka F2 population resource. The SNP was not only significantly associated with body weight at 10 and 12 weeks, respectively, but also with chicken shank length, chest depth and body slanting length at 8 weeks; shank length, pectoral angle, body slanting length and pelvis breadth at 12 weeks, respectively. And the polymorphism was also significantly associated with carcass traits including semi-evisceration weight, evisceration weight, breast muscle weight, leg weight and carcass weight as well. The observed values of individuals with CA genotype were significantly higher than CC genotype both in body weight at different stages and carcass traits. This SNP altered the predicted second structure of pre-mir-1606, with the altering of the free energy values. And the relative expression level of mature miRNA between CA and AA was significantly changed in leg muscle. Our data suggested that miRNA-1606 may be a candidate gene associated with chicken growth traits.
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou 450002, PR China.
Hong
H
Li
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou 450002, PR China.
Shanhe
S
Wang
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou 450002, PR China.
Fengbin
F
Yan
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou 450002, PR China.
Xiaojun
X
Liu
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou 450002, PR China.
Ruirui
R
Jiang
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou 450002, PR China.
Ruili
R
Han
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou 450002, PR China.
Zhuanjian
Z
Li
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou 450002, PR China.
Guoxi
G
Li
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou 450002, PR China.
Yadong
Y
Tian
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou 450002, PR China. Electronic address: xtkang2001@263.net.
Xiangtao
X
Kang
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Zhengzhou 450002, PR China. Electronic address: grsun2000@126.com.
Guirong
G
Sun
D000818:Animals; D001835:Body Weight; D002645:Chickens / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D008460:Meat; D035683:MicroRNAs / Q000235:genetics* / Q000378:metabolism*; D020641:Polymorphism, Single Nucleotide
D035683:MicroRNAs
Association analysis; Chicken; MiRNA-1606; Phenotypic variation; Polymorphisms