| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2013-07-08 |
| タイトル |
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タイトル |
The origin and genetic variation of domestic chickens with special reference to junglefowls Gallus g. gallus and G. varius |
| タイトル |
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タイトル |
The origin and genetic variation of domestic chickens with special reference to junglefowls Gallus g. gallus and G. varius |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
SAWAI, Hiromi
KIM, Hie Lim
KUNO, Kaori
SUZUKI, Sayaka
GOTOH, Hideo
TAKADA, Masaru
TAKAHATA, Naoyuki
SATTA, Yoko
AKISHINONOMIYA, Fumihito
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| 著者別名 |
尚之, 高畑
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
It is postulated that chickens (Gallus gallus domesticus) became domesticated from wild junglefowls in Southeast Asia nearly 10,000 years ago. Based on 19 individual samples covering various chicken breeds, red junglefowl (G. g. gallus), and green junglefowl (G. varius), we address the origin of domestic chickens, the relative roles of ancestral polymorphisms and introgression, and the effects of artificial selection on the domestic chicken genome. DNA sequences from 30 introns at 25 nuclear loci are determined for both diploid chromosomes from a majority of samples. The phylogenetic analysis shows that the DNA sequences of chickens, red and green junglefowls formed reciprocally monophyletic clusters. The Markov chain Monte Carlo simulation further reveals that domestic chickens diverged from red junglefowl 58,000±16,000 years ago, well before the archeological dating of domestication, and that their common ancestor in turn diverged from green junglefowl 3.6 million years ago. Several shared haplotypes nonetheless found between green junglefowl and chickens are attributed to recent unidirectional introgression of chickens into green junglefowl. Shared haplotypes are more frequently found between red junglefowl and chickens, which are attributed to both introgression and ancestral polymorphisms. Within each chicken breed, there is an excess of homozygosity, but there is no significant reduction in the nucleotide diversity. Phenotypic modifications of chicken breeds as a result of artificial selection appear to stem from ancestral polymorphisms at a limited number of genetic loci. |
| 書誌情報 |
PLoS ONE
en : PLoS ONE
巻 5,
号 5,
p. Article numbere10639,
発行日 2010
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| 出版者 |
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出版者 |
Public Library of Science |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
19326203 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1371/journal.pone.0010639 |
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関連名称 |
10.1371/journal.pone.0010639 |
| 権利 |
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権利情報 |
© 2010 Sawai et al. |
| 関連サイト |
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識別子タイプ |
URI |
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関連識別子 |
http://www.plos.org/open-access/ |
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関連名称 |
Copyright |
| フォーマット |
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内容記述タイプ |
Other |
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内容記述 |
application/pdf |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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