| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Mitochondrial genomes and divergence times of crocodile newts : Inter-islands distribution of Echinotriton andersoni and the origin of a unique repetitive sequence found in Tylototriton mt genomes |
|
言語 |
en |
| 作成者 |
Kurabayashi, Atsushi
Nishitani, Takuma
Katsuren, Seiki
Oumi, Shohei
Sumida, Masayuki
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
Copyright (c) 2012 by The Genetics Society of Japan |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
crocodile newts |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
divergence age |
| 主題 |
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|
主題Scheme |
Other |
|
主題 |
endangered species |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
mitochondrial genome |
| 主題 |
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|
主題Scheme |
Other |
|
主題 |
Ryukyu Islands |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
480 |
| 内容記述 |
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|
内容記述 |
Crocodile newts, which constitute the genera Echinotriton and Tylototriton, are known as living fossils, and these genera comprise many endangered species. To identify mitochondrial (mt) genes suitable for future population genetic analyses for endangered taxa, we determined the complete nucleotide sequences of the mt genomes of the Japanese crocodile newt Echinotriton andersoni and Himalayan crocodile newt Tylototriton verrucosus. Although the control region (CR) is known as the most variable mtDNA region in many animal taxa, the CRs of crocodile newts are highly conservative. Rather, the genes of NADH dehydrogenase subunits and ATPase subunit 6 were found to have high sequence divergences and to be usable for population genetics studies. To estimate the inter-population divergence ages of E. andersoni endemic to the Ryukyu Islands, we performed molecular dating analysis using whole and partial mt genomic data. The estimated divergence ages of the inter-island individuals are older than the paleogeographic segmentation ages of the islands, suggesting that the lineage splits of E. andersoni populations were not caused by vicariant events. Our phylogenetic analysis with partial mt sequence data also suggests the existence of at least two more undescribed species in the genus Tylototriton. We also found unusual repeat sequences containing the 3′ region of cytochrome apoenzyme b gene, whole tRNA-Thr gene, and a noncoding region (the T-P noncoding region characteristic in caudate mtDNAs) from T. verrucosus mtDNA. Similar repeat sequences were found in two other Tylototriton species. The Tylototriton taxa with the repeats become a monophyletic group, indicating a single origin of the repeat sequences. The intra-and inter-specific comparisons of the repeat sequences suggest the occurrences of homologous recombination-based concerted evolution among the repeat sequences. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
日本遺伝学会 |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1266/ggs.87.39 |
| 関連情報 |
|
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1266/ggs.87.39 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1341-7568 |
| 収録物識別子 |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11077421 |
| 開始ページ |
|
|
開始ページ |
39 |
| 書誌情報 |
Genes & Genetic Systems
Genes & Genetic Systems
巻 87,
号 1,
p. 39-51,
発行日 2012
|
| 旧ID |
33948 |
GenesGenetSyst_87_39.pdf (1.6 MB)
