Sex-linked barring in chickens is controlled by the CDKN2A /B tumour suppressor locus.
Pigment Cell Melanoma Res
; 23(4): 521-30, 2010 Aug.
Article
en En
| MEDLINE
| ID: mdl-20374521
Sex-linked barring, a common plumage colour found in chickens, is characterized by black and white barred feathers. Previous studies have indicated that the white bands are caused by an absence of melanocytes in the feather follicle during the growth of this region. Here, we show that Sex-linked barring is controlled by the CDKN2A/B locus, which encodes the INK4b and ARF transcripts. We identified two non-coding mutations in CDKN2A that showed near complete association with the phenotype. In addition, two missense mutations were identified at highly conserved sites, V9D and R10C, and every bird tested with a confirmed Sex-linked barring phenotype carried one of these missense mutations. Further work is required to determine if one of these or a combined effect of two or more CDKN2A mutations is causing Sex-linked barring. This novel finding provides the first evidence that the tumour suppressor locus CDKN2A/B can affect pigmentation phenotypes and sheds new light on the functional significance of this gene.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Pigmentación
/
Pollos
/
Caracteres Sexuales
/
Inhibidor p16 de la Quinasa Dependiente de Ciclina
/
Inhibidor p15 de las Quinasas Dependientes de la Ciclina
/
Ligamiento Genético
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Pigment Cell Melanoma Res
Asunto de la revista:
NEOPLASIAS
Año:
2010
Tipo del documento:
Article
País de afiliación:
Suecia