Characterization of the promoter of the Wiv-1 (Lin6) gene encoding a wound-inducible cell wall-bound acid invertase in tomato

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Fragments of different length (4 kb and 1 kb) of the 5′ upstream region of the <i>Wiv-1</i> (<i>Lin6</i>) gene encoding a wound-inducible cell wall-bound acid invertase in tomato were fused to the beta-glucuronidase (GUS) gene and expressed in tobacco and tomato plants. The GUS activity detected was similar in all transformed lines, suggesting that the 1 kb region contains most of the regulatory motifs responsible for the characteristics of the <i>Wiv-1</i> promoter. GUS activity was observed in vascular tissues of transgenic tomato and tobacco. In stem sections of transgenic tobaccos, the strongest activity was observed in the internal phloem of the nodes adjacent to the bases of petioles. The GUS activity in leaves of transgenic tobacco was elevated by addition of soluble sugars, especially sucrose. Previous studies suggested that the Wiv-1 enzyme participated in the regulation of carbohydrate contents in tomato leaves (Ohyama and Hirai 1999). The results obtained in the present study suggest that the Wiv-1 enzyme controls the loading of sucrose at the phloem of nodes and <i>Wiv-1</i> regulation depends on the concentration of sugars in source leaves.

収録刊行物

  • Plant biotechnology  

    Plant biotechnology 23(4), 365-371, 2006-09-01 

    Japanese Society for Plant Cell and Molecular Biology

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各種コード

  • NII論文ID(NAID)
    10021909025
  • 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
    8041076
  • 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  NDL  J-STAGE 
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