1887

Abstract

Summary

The sequence of the 3′ 1106 nucleotides of the watermelon mosaic virus 2 (WMV 2) genome has been determined. The sequence contains the complete coding region of the viral coat protein followed by a 3′ untranslated sequence of 251 nucleotides. When these sequences were compared with the equivalent regions of the N strain of soybean mosaic virus (SMV-N), the coat protein coding regions were 82% homologous, whereas the 3′ untranslated sequences were 78% homologous. Optimal alignment of the 3′ untranslated regions of RNA from 13 strains of seven other distinct potyviruses revealed that the degree of homology between strains was in the range 83 to 99%. In contrast, the sequences from distinct viruses had identities in the range 39 to 53%, comparable to the level of identity found between the 3′ non-coding regions of viruses from unrelated plant virus groups. On the basis of these results, WMV 2 and SMV-N could be regarded as strains of one virus. These results also suggest that the sequence of the 3′ untranslated region of the potyvirus genome may be an accurate marker of genetic relatedness and could serve as an aid to identification and classification of potyviruses.

Loading

Article metrics loading...

/content/journal/jgv/10.1099/0022-1317-70-10-2775
1989-10-01
2019-10-13
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/journal/jgv/10.1099/0022-1317-70-10-2775
Loading

Most Cited This Month

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error