Subfamily divergence in the multigene family of ribulose-1, 5-bisphosphate carboxylase/oxygenase (rbcS) in triticeae and its relatives

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To investigate genetic mechanisms acting on multigene family in plants, we analyzed sequence variation in the <i>rbcS</i> gene of 13 species of Triticeae and one species each of related tribes (Bromeae and Aveneae). A total of 36 <i>rbcS</i> genes were analyzed. Based on dimorphism in the length of intron, the <i>rbcSs</i> of investigated species were classified into two subfamilies A and B. The difference in intron length was caused by an indel of about 200 bp in the middle of the intron. The two subfamilies of <i>rbcS</i> were present in the three tribes, indicating that the divergence of <i>rbcS</i> subfamilies occurred before the split of these tribes. Generally, variation between the two subfamilies of <i>rbcS</i> was larger than that within subfamily, but these two measures were about the same at the tribe level. This result suggested that divergence of the subfamilies of <i>rbcS</i> occurred at about the same time of tribe diversification. The level of nucleotide variation in the exon region between subfamilies was reduced in the Triticeae, but clear change was not detected in the intron sequence. This result suggested that the exon sequences between subfamilies of <i>rbcS</i> were homogenized without affecting the intron sequence in the Triticeae lineage.<br>

収録刊行物

  • Genes & genetic systems

    Genes & genetic systems 73(5), 297-309, 1998-10

    The Genetics Society of Japan

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各種コード

  • NII論文ID(NAID)
    10003763132
  • 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
    4663281
  • 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  NDL  J-STAGE 
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