Accumulation of chloroplast DNA sequences on the Y chromosome of Silene latifolia

Eduard Kejnovsky, Zdenek Kubat, Roman Hobza, Martina Lengerova, Shusei Sato, Satoshi Tabata, Kiichi Fukui, Sachihiro Matsunaga, Boris Vyskot

研究成果: Article査読

53 被引用数 (Scopus)

抄録

Silene latifolia is a model dioecious plant with heteromorphic sex chromosomes. The Y chromosome is the largest in this species. Theoretical models propose an accumulation of repetitive DNA sequences in non-recombining parts of the Y chromosome. In this study, we isolated a BAC7H5 clone preferentially hybridizing to the Y chromosome of S. latifolia. Sequence analysis revealed that this BAC7H5 contains part of the chloroplast genome, indicating that these chloroplast sequences have accumulated on the Y chromosome and also may contribute to its large size. We constructed Y chromosome- and X chromosome-specific libraries and screened them to find Y- and/or X-linked copies of chloroplast sequences. Sequence analysis revealed higher divergence of a non-genic region of the chloroplast sequences located on the Y chromosome while genic regions tested showed only very low (max 0.9%) divergence from their chloroplast homologues.

本文言語English
ページ(範囲)167-175
ページ数9
ジャーナルGenetica
128
1-3
DOI
出版ステータスPublished - 2006 9月
外部発表はい

ASJC Scopus subject areas

  • 動物科学および動物学
  • 遺伝学
  • 植物科学
  • 昆虫科学

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