Dorsoventral pattern formation of tobacco leaf involves spatial expression of a tobacco homeobox gene, NTH15

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Biological function of a tobacco homeobox gene, <i>NTH15</i>, was studied by producing two different types of transgenic tobacco, one of which was transformed with <i>NTH15::GUS</i> and the other was transformed with CaMV 35S promoter::antisense <i>NTH15</i>. The GUS staining around shoot apical meristem (SAM) in transgenic plants with <i>NTH15::GUS</i> revealed that the <i>NTH15</i> expression is specifically localized in the dorsal region of young leaf primordia. The transgenic plants transformed with the antisense construct lost the expression of the endogenous transcript around SAM and also showed alterations in leaf morphology. These transformants formed leaves with disorganized pinnate venation. Midribs of the malformed leaves also lost crescent-shaped vascular systems by ectopic cell vacuolization in their adaxial side. These observations suggest suppression of the <i>NTH15</i> expression around SAM causes loss of dorsoventrality in midribs. Taken together with the observations of the <i>NTH15</i> expression pattern, it may be important for the dorsoventral development of leaves that the <i>NTH15</i> gene is expressed in the adaxial side of young leaf primordia.<br>

収録刊行物

  • Genes & genetic systems

    Genes & genetic systems 72(1), 1-8, 1997-02

    The Genetics Society of Japan

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各種コード

  • NII論文ID(NAID)
    10003760457
  • 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
    4196963
  • 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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