Gallus gallus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA394252 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR5828100_1.fastq.gz | Fastqsanger.gz | |||
| SRR5828100_2.fastq.gz | Fastqsanger.gz | |||
| SRR5828095_1.fastq.gz | Fastqsanger.gz | |||
| SRR5828095_2.fastq.gz | Fastqsanger.gz | |||
| SRR5828096_1.fastq.gz | Fastqsanger.gz |
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Project description:During the long history of chicken domestication, eyelid color, like skin color and shank color, has been one of the unique physical traits of Chinese indigenous chickens that influence consumer behavior. In China, the Lindian chicken, which has colored feathers, is renowned for the appetizing flavor of its meat and eggs, and its eyelid colors varies from deep to light shades, including black, gray, red, and light yellow. To identify the genes controlling eyelid pigmentation, the expression profiles of black and light-yellow eyelids of Lindian chickens were analyzed with transcriptome sequencing. We detected 13,466 genes expressed in the eyelids, among which 14 were differentially expressed. A KEGG pathway analysis showed that tyrosine metabolism and melanogenesis genes were significantly enriched among these DEGs (corrected P < 0.05). Therefore, we infer that melanin metabolism is one of main factors affecting Lindian chicken eyelid pigmentation. In summary, we have identified the melanin genes responsible for eyelid pigmentation of the Lindian chicken, and also provide a valuable resource for the future study of the physical traits of chickens.
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Project description:In order to reveal the candidate genes related to yellow plumage in Chinese chicken, a hybrid population of Huiyang Bearded chicken and White Leghorn chicken, and transcriptome data were generated from the yellow and white feather follicle of F3 population in two periods (7 and 11weeks) respectively, using RNA-seq. 127 common different expressed genes were obtained(DEGs) between two periods, these DEGs were mainly enriched in the Gene Ontology classes ‘developmental pigmentation’, ‘melanin biosynthetic process’, ‘melanosome organization’, ‘melanosome membrane’ and ‘melanosome’all related to the pigmentation process. And involved genes were considered as pigment genes that play important roles in melanogenesis. The results reveal key functional genes and possible molecular mechanisms for the elucidation of yellow plumage formation in Chinese indigenous chickens.
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Project description:Feather coloration is one of the most extraordinary examples of phenotypic diversity. This diversity results both from the variation in hue as well as from the presence/absence of pigment in distinct feather regions. The mechanisms that drive presence/absence of pigmentation in feathers are not yet fully understood. Here we characterize the gene expression profiles associated with differential melanin pigmentation in Dark-eyed junco (Junco hyemalis) tails, a social feather ornament used in courtship and male-male competition. Junco tail feathers contain both white apigmented regions as well as dark melanin-pigmented regions. We compared the transcriptome-wide gene expression in developing white and dark regions of tail feathers to understand the regulatory pathways that may regulate the development of this feather ornament. We show that both white and dark feathers express melanocyte markers, indicating that white feathers contain cells capable of producing pigment. However, only dark cells express genes associated with melanin synthesis. We identify differences in expression of genes that may regulate melanocyte activation in dark feathers. Future studies should experimentally test the role of these genes in driving differences in feather pigmentation.
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Project description:A minor population of M cells within the follicle-associated epithelium (FAE) of intestinal Peyer’s patches (PP) serves as a major portal for entry of exogenous antigens. Characterization of the mammalian M cells, including identification of M-cell surface molecules used for bacterial uptake, has been hampered by their relative rarity. In contrast, M cells constitute virtually all of the FAE cells in the avian bursa of Fabricius. We therefore performed comparative gene expression profiling of chicken and murine FAE to identify commonly expressed genes by M cells in both species. The comprehensive transcriptome analysis revealed that 28 genes were commonly up-regulated in FAE from both species. In situ hybridization (ISH) revealed that annexin A10 (Anxa10) mRNA was scattered in FAE, and co-localized with Ulex europaeus agglutinin-1(UEA-1) that binds to M cells. Whole-mount immunostaining also revealed that cellular prion protein (PrPC) was expressed on the luminal side of the apical plasma membrane of M cells, and co-localized with grycoprotein2 (GP2) that recognizes only M cells in murine PP. Taken together, we found new M-cell-specific molecules by using comprehensive transcriptome analysis. These molecules conserved in M cells from both species might play critical roles in M-cell function and/or differentiation.
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