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  1. 010 学術雑誌論文
  2. 印南, 秀樹 / INNAN, Hideki

Species and Recombination Effects on DNA Variability in the Tomato Genus

https://ir.soken.ac.jp/records/4417
https://ir.soken.ac.jp/records/4417
45faee72-22e5-4ae0-9b10-9d834d30b008
Item type 学術雑誌論文 / Journal Article(1)
公開日 2014-04-16
タイトル
タイトル Species and Recombination Effects on DNA Variability in the Tomato Genus
タイトル
言語 en
タイトル Species and Recombination Effects on DNA Variability in the Tomato Genus
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 BAUDRY, Emmanuelle

× BAUDRY, Emmanuelle

WEKO 2610

BAUDRY, Emmanuelle

Search repository
KERDELHUé , Carole

× KERDELHUé , Carole

WEKO 2611

KERDELHUé , Carole

Search repository
INNAN, Hideki

× INNAN, Hideki

WEKO 342

INNAN, Hideki

Search repository
STEPHAN, Wolfgang

× STEPHAN, Wolfgang

WEKO 2609

STEPHAN, Wolfgang

Search repository
著者別名 印南, 秀樹

× 印南, 秀樹

WEKO 341
NRID 1000090444140
e-Rad 90444140

印南, 秀樹

Search repository
抄録
内容記述タイプ Abstract
内容記述 Population genetics theory predicts that strong selection for rare, beneficial mutations or against frequent, deleterious mutations reduces polymorphism at linked neutral (or weakly selected) sites. The reduction of genetic variation is expected to be more severe when recombination rates are lower. In outbreeding species, low recombination rates are usually confined to certain chromosomal regions, such as centromeres and telomeres. In contrast, in predominantly selfing species, the rarity of double heterozygotes leads to a reduced effective recombination rate in the whole genome. We investigated the effects of restricted recombination on DNA polymorphism in these two cases, analyzing five Lycopersicon species with contrasting mating systems: L. chilense, L. hirsutum, L. peruvianum, L. chmielewskii, and L. pimpinellifolium, of which only the first three species have self-incompatibility alleles. In each species, we determined DNA sequence variation of five single-copy genes located in chromosomal regions with either high or low recombination rate. We found that the mating system has a highly significant effect on the level of polymorphism, whereas recombination has only a weak influence. The effect of recombination on levels of polymorphism in Lycopersicon is much weaker than in other well-studied species, including Drosophila. To explain these observations, we discuss a number of hypotheses, invoking selection, recombination, and demographic factors associated with the mating system. We also provide evidence that L. peruvianum, showing a level of polymorphism (almost 3%) that is comparable to the level of divergence in the whole genus, is the ancestral species from which the other species of the genus Lycopersicon have originated relatively recently.
書誌情報 Genetics
en : Genetics

巻 158, 号 4, p. 1725-1735, 発行日 2001-08-01
出版者
出版者 The Genetics Society of America
ISSN
収録物識別子タイプ ISSN
収録物識別子 0016-6731
権利
権利情報 © 2001 by The Genetics Society of America
関連サイト
識別子タイプ URI
関連識別子 http://www.genetics.org/content/158/4/1725.full
関連名称 The Genetics Society of America
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