Functional Divergence of MYB-Related Genes, WEREWOLF and AtMYB23 in Arabidopsis

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Epidermal cell differentiation in <i>Arabidopsis</i> is studied as a model system to understand the mechanisms that determine the developmental end state of plant cells. MYB-related transcription factors are involved in cell fate determination. To examine the molecular basis of this process, we analyzed the functional relationship of two R2R3-type MYB genes, <i>AtMYB23</i> (<i>MYB23</i>) and <i>WEREWOLF</i> (<i>WER</i>). <i>MYB23</i> is involved in leaf trichome formation. <i>WER</i> represses root-hair formation. Swapping domains between MYB23 and WER, we found that a low homology region of MYB23 might be involved in ectopic trichome initiation on hypocotyls. <i>MYB23</i> and all <i>MYB23-WER</i> (<i>MW</i>) chimeric transgenes rescued the increased root-hair phenotype of the <i>wer-1</i> mutant. Although <i>WER</i> did not rescue the <i>gl1-1</i> no-trichome phenotype, <i>MYB23</i> and all <i>MW</i> chimeric transgenes rescued <i>gl1-1</i>. These results suggest that MYB23 acquired a specific function for trichome differentiation during evolution.

収録刊行物

  • Bioscience, biotechnology, and biochemistry

    Bioscience, biotechnology, and biochemistry 76(5), 883-887, 2012-05-23

    Japan Society for Bioscience, Biotechnology, and Agrochemistry

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各種コード

  • NII論文ID(NAID)
    10030752411
  • NII書誌ID(NCID)
    AA10824164
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09168451
  • NDL 記事登録ID
    023681815
  • NDL 請求記号
    Z53-G223
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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