Nucleic Acids Research, 1985, Vol. 13, No. 15 5585-5590
© 1985
Articles |
Molecular basis of plant viral virulence; the complete nucleotide sequence of an attenuated strain of tobacco mosaic virus
National Institute of Agrobiological Resources, Tsukuba Science City Yatabe Ibaraki 305 1Department of Agricultural Chemistry, Faculty of Agriculture, Tokyo University of Agriculture and Technology Fuchu-shi, Tokyo 183 2Department of Biophysics and Biochemistry, Faculty of Science, University of Tokyo Tokyo 113, Japan
*To Whom correspondence should be addressed
Received April 16, 1985. Revised July 8, 1985. Accepted July 8, 1985.
The total genome sequence of L11A, an attenuated strain of tobacco mosaic virus (TMV), has been determinea. This strain is able to multiply in tomato plants without inducing any remarkable symptoms, but to protect them from later infection with virulent TMV strains. When compared with the recently published total genome sequence of TMV L (the virulent ancestrastrain of L11A) ten base substitutions were found in the L11A genome. Seven of these occurred in the third letters of in-phase codons and did not influence amino acids. Only three, which were in the common reading frame for both the 130K and 180K proteins, resulted in amino acid changes. Together with the result of the partial sequence of RNA of L11, an intermediate strain in sequential isolation from L to L11A, it is observed that one base at the nucleotide position 1117 is changed from L to L11 and two bases at the positions 2349 and 2754 are changed from L11 to L A.
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