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  1. 010 学術雑誌論文
  2. 01 研究員発表論文
  3. フォーセット・ジェフリー・アンドリュー / FAWCETT, Jeffrey A

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/3621
0773685d-13a0-4644-88a4-9abe1be08c82
Item type 学術雑誌論文 / Journal Article(1)
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

FAWCETT, Jeffrey A

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ROUZE, Pierre

× ROUZE, Pierre

ROUZE, Pierre

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VAN DE PEER, Yves

× VAN DE PEER, Yves

VAN DE PEER, Yves

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著者別名 FAWCETT, Jeffrey A

× 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
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
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