First Report of Blackberry chlorotic ringspot virus in Rubus sp. in the United States

Blackberry chlorotic ringspot virus (BCRV), genus Ilarvirus, has been found in Rubus sp. in Scotland (2) and rose in the United States (4). The possibility that BCRV infects other hosts in the United States was explored. We tested 18 accessions of Fragaria sp. and 30 of Rubus sp. maintained at the N...

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Veröffentlicht in:Plant disease. - 1997. - 91(2007), 4 vom: 01. Apr., Seite 463
1. Verfasser: Tzanetakis, I E (VerfasserIn)
Weitere Verfasser: Postman, J D, Martin, R R
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2007
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article
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520 |a Blackberry chlorotic ringspot virus (BCRV), genus Ilarvirus, has been found in Rubus sp. in Scotland (2) and rose in the United States (4). The possibility that BCRV infects other hosts in the United States was explored. We tested 18 accessions of Fragaria sp. and 30 of Rubus sp. maintained at the National Clonal Germplasm Repository in Corvallis, OR. Ilarviruses had been detected in these plants by reverse transcription (RT)-PCR, ELISA, or had caused symptoms typical of ilarviruses on indicator plants. The accessions were tested by RT-PCR with primers F (5'-GTTTCCTGTGCTCCTCA-3') and R (5'-GTCACACCGAGGTACT-3') (4) that amplify a 519 to 522 nt (depending on the isolate) region of the RNA 3 of BCRV. The virus was detected in two accessions of black raspberry (Rubus occidentalis L.): RUB433, cv. Lowden and RUB 9012, cv. New Logan. The sequences of the fragments amplified from these accessions (GenBank Accession Nos. EF041817 and EF041818, respectively) had 97% nt sequence identity to each other and 95 and 88% nt identity to the rose and Scottish isolates (GenBank Accession Nos. DQ329378 and DQ091195, respectively). Chenopodium quinoa indicator plants inoculated with isolate RUB 433 developed mild chlorotic spots on the inoculated leaves 4 days after inoculation. RT-PCR and sequencing of the amplicons verified BCRV infection of C. quinoa. RUB 9012 was used for the characterization of Black raspberry latent virus (BRLV), later thought to be an isolate of Tobacco streak virus (TSV). This accession was recently found to be infected with Strawberry necrotic shock virus (SNSV) but not TSV (3). It is possible that BRLV may be a mixture of SNSV and BCRV. SNSV is one of the most abundant viruses of Rubus sp. in the Pacific Northwest (1), and the finding of another ilarvirus, BCRV, may account in part for the rapid decline of Rubus sp. observed in several fields in Oregon and Washington. To our knowledge, this is the first report of BCRV infecting Rubus sp. outside the United Kingdom. References: (1) A. B. Halgren. Ph.D. Diss. Oregon State University, Corvallis, OR, 2006. (2) A. T. Jones et al. Ann. Appl. Biol. 149:125, 2006. (3) I. E. Tzanetakis et al. Arch. Virol. 149:2001, 2004. (4) I. E. Tzanetakis et al. Plant Pathol. 55:568, 2006 
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700 1 |a Martin, R R  |e verfasserin  |4 aut 
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