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2014, Volume 1, Issue 2

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Frontiers of Agricultural Science and Engineering >> 2014, Volume 1, Issue 2 doi: 10.15302/J-FASE-2014026

Inverted duplication including

State Key Laboratory for Agrobiotechnology, China Agricultural University, Beijing 100193, China

Available online: 2014-10-10
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Abstract

The dermal hyperpigmentation phenotype in chickens is controlled by the dominant fibromelanosis allele. One of the ten unique characteristics of Silkie chickens is the fibromelanosis phenotype, which is pigmentation in the dermal layer of the skin and connective tissue. In this study, we found a mutation of fibromelanosis, a genomic rearrangement that included an inverted duplication of ( ), is responsible. We show that, as a stimulator of melanoblast proliferation, expression was increased in silkie embryos and in both skin and muscle throughout adulthood. expression led to an increase in expression of the downstream genes and and was closely relate with the hyperpigmentation phenotype. We examined eight different Chinese chicken breeds showing hyperpigmentation and conclude that this structural genetic variant exists in all fibromelanosis chicken breeds.

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