Abstract
Vitivirus is a newly established genus of RNA plant viruses (Martelli et al., 1997). It contains four members named grapevine viruses A, B, C and D (GVA, GVB, GVC and GVD). All these viruses are restricted to a single natural host, grapevine, and phloem in the host, and are transmitted by mealybugs. These properties differ from those of viruses in the genus Tricovirus, which the vitiviruses previously belonged to.
GVB was first named in 1993 (Boscia et al., 1993), but its associated disease, corky bark, a serious disease in grapevines in the world, was described in 1954 (Hewitt, 1954). It was first found in Australia in 1999 (Habili and Symons, 1999). The genome of an Italian isolate has been completely sequenced and it resembles the GVA genome (Saldarelli et al., 1996). Both viruses possess a single-stranded positive sense RNA, which encode five genes (see Fig. 1). This feature again differs from tricoviruses, which only encode three genes.
We have determined sequences of 20 different GVB isolates in four different regions of the genome. We found that extensive variation of sequence of GVB exists within the different grapevine isolates.
GVB was first named in 1993 (Boscia et al., 1993), but its associated disease, corky bark, a serious disease in grapevines in the world, was described in 1954 (Hewitt, 1954). It was first found in Australia in 1999 (Habili and Symons, 1999). The genome of an Italian isolate has been completely sequenced and it resembles the GVA genome (Saldarelli et al., 1996). Both viruses possess a single-stranded positive sense RNA, which encode five genes (see Fig. 1). This feature again differs from tricoviruses, which only encode three genes.
We have determined sequences of 20 different GVB isolates in four different regions of the genome. We found that extensive variation of sequence of GVB exists within the different grapevine isolates.
Original language | English |
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Title of host publication | 13th Meeting of the International Council for the Study of Viruses and Virus-like Diseases of the Grapevine (ICVG) |
Pages | 124-126 |
Publication status | Published - Mar 2000 |
Externally published | Yes |
Event | 13th Meeting of the International Council for the Study of Viruses and Virus-like Diseases of the Grapevine (ICVG) - Adelaide, Australia Duration: 12 Mar 2000 → 17 Mar 2000 https://icvg.org/data/abstrb.pdf |
Conference
Conference | 13th Meeting of the International Council for the Study of Viruses and Virus-like Diseases of the Grapevine (ICVG) |
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Country/Territory | Australia |
City | Adelaide |
Period | 12/03/00 → 17/03/00 |
Internet address |