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  • Title: Cymbidium mosaic virus coat protein gene in antisense confers resistance to transgenic Nicotiana occidentalis.
    Author: Lim SH, Ko MK, Lee SJ, La YJ, Kim BD.
    Journal: Mol Cells; 1999 Dec 31; 9(6):603-8. PubMed ID: 10672926.
    Abstract:
    The nucleotide sequence of the 3'-terminal region of the Korean isolate of cymbidium mosaic virus (CyMV-Ca) from a naturally infected cattleya was determined. The sequence contains an open reading frame (ORF) coding for the viral coat protein (CP) at the 3'-end and three other ORFs (triple gene block or movement protein) of CyMV. The CP gene encodes a polypeptide chain of 220 amino acids with a molecular mass of 23,760 Da. The deduced CP sequence showed a strong homology with those of two CyMVs reported. A construct of the CyMV-Ca CP gene in the antisense orientation in the plant expression vector pMBP1 was transferred via Agrobacterium tumefaciens-mediated transformation into Nicotiana occidentalis which is a propagation host of CyMV. The T1 progeny of the transgenic plants were inoculated with CyMV and found to be highly resistant to CyMV infection.
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