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| Content Provider | Springer Nature Link |
|---|---|
| Author | Goszczynski, D. E. |
| Copyright Year | 2014 |
| Abstract | A new genetic variant of grapevine virus A (GVA) of phylogenetic group I was identified during comparative analysis of the viruses infecting two sibling grapevines cv. Shiraz. The grapevines were propagated from a single mother plant. One of them become infected with Shiraz disease (SD), which is highly destructive on noble grapevine cultivars Shiraz and Merlot in South Africa. The new variant was not associated with SD, as it was present in both SD-affected and SD-free plants. However, unlike in an earlier study of grapevines affected by this disease, this GVA variant of group I strongly dominated over a coinfecting variant of group II associated with SD and a variant of group III. The variant, named I327-5, was mechanically transmitted from SD-affected grapevine to Nicotiana benthamiana, and its genome was fully sequenced. The sequence data revealed that the most distinctive genomic feature of variant I327-5 is the deletion of three nucleotides in the region where the ORF2 and ORF3 genes overlap. These genes of GVA encode a 19.8-kDa protein, the function of which remains unknown, and a 31-kDa protein that is indispensable for the movement of the virus in plants. An alignment of the amino acid sequences of these proteins encoded by variant I327-5 with the corresponding proteins encoded by other members of group I suggested that, as the result of mutations, a neutral threonine or alanine and a negatively charged glutamic acid, respectively, were removed from the proteins of GVA variant I327-5. |
| Starting Page | 2523 |
| Ending Page | 2528 |
| Page Count | 6 |
| File Format | |
| ISSN | 03048608 |
| Journal | Archives of Virology |
| Volume Number | 159 |
| Issue Number | 9 |
| e-ISSN | 14328798 |
| Language | English |
| Publisher | Springer Vienna |
| Publisher Date | 2014-04-23 |
| Publisher Place | Vienna |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Virology Medical Microbiology Infectious Diseases |
| Content Type | Text |
| Resource Type | Article |
| Subject | Virology Medicine |
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