Phylogenetic relationships among Fagopyrum species revealed by the nucleotide sequences of the ITS region of the nuclear rRNA gene

この論文にアクセスする

この論文をさがす

著者

抄録

The DNA sequences of the internal transcribed spacer (ITS) region of the rRNA gene were determined in 20 taxa of 12 species of <i>Fagopyrum</i>. By comparing the sequence data and constructing phylogenetic trees, the phylogenetic relationships among the <i>Fagopyrum</i> species were established. The sequences of ITS (ITS1 and ITS2) were about 3-7 times more variable than those of the 5.8S subunit of the rRNA gene. The classification of <i>Fagopyrum</i> species based on the DNA sequences of the rRNA gene almost coincides with the classification based on morphology, allozyme variability, and nucleotide sequences of the <i>rbcL-accD</i> region of the chloroplast DNA. A close relationship of <i>F. lineare</i> with the <i>F. statice-F. leptopodum</i> clade was suggested and this was strongly supported by a 68-bp gap in ITS1 found in these three species. A tetraploid <i>F. cymosum</i> from Kathi, India, has two distinct rRNA genes probably on homoeologous chromosomes, and was distinguished from the clade of other diploid/tetraploid <i>F. cymosum</i> with a high bootstrap value. This strengthened the hypothesis of the polyphyletic origin of the tetraploid <i>F. cymosum</i>.<br>

収録刊行物

  • Genes & genetic systems

    Genes & genetic systems 73(4), 201-210, 1998-08

    The Genetics Society of Japan

参考文献:  27件中 1-27件 を表示

被引用文献:  6件中 1-6件 を表示

各種コード

  • NII論文ID(NAID)
    10003762756
  • NII書誌ID(NCID)
    AA11077421
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13417568
  • NDL 記事登録ID
    4598854
  • NDL 雑誌分類
    ZR1(科学技術--生物学)
  • NDL 請求記号
    Z53-W539
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
ページトップへ