NDLI: Differences of Z chromosome and genomic expression between early- and late-feathering chickens

Content Provider	Springer Nature Link
Author	Luo, Chenglong Shen, Xu Rao, Yousheng Xu, Haiping Tang, Jun Sun, Liang Nie, Qinghua Zhang, Xiquan
Copyright Year	2012
Abstract	One duplicated segment on chicken Z chromosome is a causal mutation to the late-feathering phenotype. However, understanding biological process of the late-feathering formation is also of interest to chicken breeding and feather development theory. One hundred and thirty-seven valid single nucleotide polymorphisms (SNPs) from an SNP database were used to perform an association study of the Z chromosome in Xinghua chickens. Two SNPs, which were respectively on 9607480 bp and 10607757 bp, were significantly associated with feathering phenotypes. This result indicated the causal mutation of the late-feathering formation in Xinghua chickens was consistent with the previous report which showed the late-feathering locus ranged 9966364–10142688 bp on Z chromosome. Microarray expressions were implemented for six 1-day-old female Xinghua chicks. Compared to the early-feathering chicks, there were 249 and 83 upregulated and downregulated known genes in the late-feathering chicks. Forty-one genes were expressed in late-feathering chicks, but not in early-feathering ones. At least 14 significantly differentially expressed genes were directly related to keratin. In the region of the sex-linked feathering gene, only prolactin receptor (PRLR) gene was a significantly differentially expressed gene. Expression of PRLR in late-feathering chicks was 1.78-fold as that in early-feathering chicks. Late-feathering Wenchang chicks also had higher expression level of PRLR than early-feathering ones. This study suggested that increasing PRLR expression that resulted from the special variant on chicken Z chromosome caused the late-feathering phenotype.
Starting Page	6283
Ending Page	6288
Page Count	6
File Format	PDF
ISSN	03014851
Journal	Molecular Biology Reports
Volume Number	39
Issue Number	5
e-ISSN	15734978
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-02-02
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chicken Late-feathering Differentially expressed gene PRLR Animal Anatomy / Morphology / Histology Animal Biochemistry
Content Type	Text
Resource Type	Article
Subject	Genetics Medicine Molecular Biology

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