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Transgenic Tobacco Plants Expressing the Bacterial Mc Gene Resist Virus Infection

  1. Author:
    Langenberg, W. G.
    Zhang, L. Y.
    Court, D. L.
    Giunchedi, L.
    Mitra, A.

  2. Author Address

    Langenberg WG USDA ARS LINCOLN, NE 68583 USA UNIV NEBRASKA CTR BIOTECHNOL LINCOLN, NE 68583 USA NCI FREDERICK CANC RES & DEV CTR ABL BASIC RES PROGRAM GENE REGULAT & CHROMOSOME BIOL LAB FREDERICK, MD 21702 USA UNIV BOLOGNA IST PATOL VEGETALE BOLOGNA ITALY
    1. Year: 1997
  2. Journal: Molecular Breeding
    1. 3
    2. 5
    3. Pages: 391-399
  4. Type of Article: Article
  1. Abstract:

    A bacterial me gene coding for a double-stranded RNA-dependent RNase III endoribonuclease and a mutant, mc70, were expressed in tobacco plants. The RNase III protein produced in the transgenic plants was the same size as the bacterial protein. Expression of the wild-type gene could cause stunting in some plant lines, but not in others. Expression of the mutant protein did not affect normal growth and development of the transgenic plants. Transgenic plants of the R1 and R2 generations, expressing the wild type, as well as a mutant protein, were resistant to infection by three disparate RNA plant viruses with a divided genome but not against two viruses with a single-stranded RNA genome. Introduction of the me gene in crop plants may provide resistance to economically important virus diseases. [References: 45]

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