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  • Title: Production of anti-virus, viroid plants by genetic manipulations.
    Author: Ishida I, Tukahara M, Yoshioka M, Ogawa T, Kakitani M, Toguri T.
    Journal: Pest Manag Sci; 2002 Nov; 58(11):1132-6. PubMed ID: 12449532.
    Abstract:
    Many pathogenic plant viruses are RNA viruses, which initiate production of double-stranded RNA intermediates when they replicate in host plant cells. Introduction of double-stranded RNA-specific ribonucleases such as the Schizosaccharomyces pombe derived pac I protein and animal cell derived interferon-induced 2',5'-oligoadenylate synthetase (2-5 Aase)/ribonuclease L (RNase L) system into various plants may make plants resistant to various pathogenic viruses and viroids. We have demonstrated that pac I and 2-5 Aase/RNase L transgenic tobacco plants are resistant to various viruses including tobacco mosaic virus, cucumber mosaic virus and potato virus Y. In addition, pac I transgenic potato plants are resistant to potato spindle tuber viroid. Using Agrobacterium-mediated transformation, we have established a transformation system for chrysanthemum plants and have recently developed pac I transgenic chrysanthemum (Dendranthema grandiflora cv Reagan) resistant to chrysanthemum stunt viroid and have grown them in isolated fields for an evaluation of their effects.
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