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Higher intron loss rate in Arabidopsis thaliana than A. lyrata is consistent with stronger selection for a smaller genome
https://ir.soken.ac.jp/records/3621
https://ir.soken.ac.jp/records/36210773685d-13a0-4644-88a4-9abe1be08c82
| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||
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| 公開日 | 2013-06-25 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Higher intron loss rate in Arabidopsis thaliana than A. lyrata is consistent with stronger selection for a smaller genome | |||||||||||
| タイトル | ||||||||||||
| タイトル | Higher intron loss rate in Arabidopsis thaliana than A. lyrata is consistent with stronger selection for a smaller genome | |||||||||||
| 言語 | en | |||||||||||
| 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 | |||||||||||
| アクセス権 | ||||||||||||
| アクセス権 | metadata only access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||||||||
| 著者 |
FAWCETT, Jeffrey A
× FAWCETT, Jeffrey A
× ROUZE, Pierre
× VAN DE PEER, Yves
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| 著者別名 |
FAWCETT, Jeffrey A
× FAWCETT, Jeffrey A
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | The number of introns varies considerably among different organisms. This can be explained by the differences in the rates of intron gain and loss. Two factors that are likely to influence these rates are selection for or against introns and the mutation rate that generates the novel intron or the intronless copy. Although it has been speculated that stronger selection for a compact genome might result in a higher rate of intron loss and a lower rate of intron gain, clear evidence is lacking, and the role of selection in determining these rates has not been established. Here, we studied the gain and loss of introns in the two closely related species Arabidopsis thaliana and A. lyrata as it was recently shown that A. thaliana has been undergoing a faster genome reduction driven by selection. We found that A. thaliana has lost six times more introns than A. lyrata since the divergence of the two species but gained very few introns. We suggest that stronger selection for genome reduction probably resulted in the much higher intron loss rate in A. thaliana, although further analysis is required as we could not find evidence that the loss rate increased in A. thaliana as opposed to having decreased in A. lyrata compared with the rate in the common ancestor. We also examined the pattern of the intron gains and losses to better understand the mechanisms by which they occur. Microsimilarity was detected between the splice sites of several gained and lost introns, suggesting that nonhomologous end joining repair of double-strand breaks might be a common pathway not only for intron gain but also for intron loss. | |||||||||||
| 書誌情報 |
Molecular Biology and Evolution en : Molecular Biology and Evolution 巻 29, 号 2, p. 849-859, 発行日 2012-02 |
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| 出版者 | ||||||||||||
| 出版者 | Oxford University Press | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 07374038 | |||||||||||
| PubMed番号 | ||||||||||||
| 識別子タイプ | PMID | |||||||||||
| 関連識別子 | 21998273 | |||||||||||
| DOI | ||||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | https://doi.org/10.1093/molbev/msr254 | |||||||||||
| 関連名称 | 10.1093/molbev/msr254 | |||||||||||
| 権利 | ||||||||||||
| 権利情報 | © The Author 2011 | |||||||||||
