Effects of the plant growth regulators on expression of MdTFL1 promoter fused β-glucuronidase (GUS) reporter gene in apple (Malus spp.) tissues in vitro

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Apple has a relatively long juvenile growth period, taking approximately 8 years to reach the flowering stage. This period has impeded breeding programs. Since <i>MdTFL1</i> (an ortholog of <i>TERMINAL FLOWER1</i>) is strongly related to juvenility/vegetative and flower initiation in apple, its studies will provide insight into relationship between phytohormones and juvenile/vegetative growth and flower bud formation. In this study, we monitored expression of the <i>MdTFL1</i> promoter-β-glucuronidase (GUS) fusion construct in apple tissues <i>in vitro</i>, to determine which plant growth regulators affect its expression. Expression of <i>MdTFL1</i> was induced strongly throughout newly generated young shoots of cytokinin-treated plants and in apices of shoots on medium containing cytokinin+auxin. These results suggest that cytokinin may induce <i>MdTFL1</i> expression to maintain the juvenile form at the base of plant, and that cytokinin and auxin determine whether the shoot apical meristem will transit from the vegetative to the reproductive state.

収録刊行物

  • Plant biotechnology

    Plant biotechnology 28(5), 503-508, 2011-12-25

    日本植物細胞分子生物学会

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各種コード

  • NII論文ID(NAID)
    10030304144
  • NII書誌ID(NCID)
    AA11250821
  • 本文言語コード
    ENG
  • 資料種別
    NOT
  • ISSN
    13424580
  • NDL 記事登録ID
    023387625
  • NDL 請求記号
    Z54-J126
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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