Isolation of novel gain- and loss-of-function alleles of the circadian clock gene LATE ELONGATED HYPOCOTYL (LHY) in Arabidopsis

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In <i>Arabidopsis</i>, two myb-related proteins, LATE ELONGATED HYPOCOTYL (LHY) and CIRCADIAN CLOCK ASSOCIATED 1 (CCA1), play key roles in the control of circadian rhythms. Photoperiodic flowering and elongation of hypocotyls are regulated by a circadian clock. Here, we report the isolation and characterization of a novel deletion allele (<i>lhy-14</i>) and a gain-of-function allele (<i>lhy</i>-<i>2</i>) of <i>lhy</i>. Based on long hypocotyl and late flowering phenotypes under long days, <i>lhy-2</i> was isolated as an intragenic suppressor of <i>lhy-12</i>, one of the loss-of-function alleles of <i>lhy</i>. Although the <i>lhy-12</i> mRNA has a 19-bp truncation, we found that this was not caused by a deletion in the <i>LHY</i> but by a point mutation. We propose a model explaining the loss-of-function of <i>LHY</i> in <i>lhy-12</i> and the partial suppression of the <i>lhy-12</i> phenotype by <i>lhy-2</i>, by the abnormal splicing of <i>LHY</i> mRNA.

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  • Plant biotechnology  

    Plant biotechnology 24(5), 457-465, 2007-12-01 

    Japanese Society for Plant Cell and Molecular Biology

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各種コード

  • NII論文ID(NAID)
    10021912118
  • NII書誌ID(NCID)
    AA11250821
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13424580
  • NDL 記事登録ID
    9302411
  • NDL 雑誌分類
    ZR3(科学技術--生物学--植物)
  • NDL 請求記号
    Z54-J126
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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