First Report of Tomato chlorotic dwarf viroid in Petunia hybrida from the United States of America

In November 2005, 13 accessions of Petunia hybrida from the United States of America entered the post-entry quarantine station of the Plant Protection Service in the Netherlands. The plants were inspected and tested for quarantine organisms according to Directives 95/44 and 97/46 of the European Uni...

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Veröffentlicht in:Plant disease. - 1997. - 91(2007), 3 vom: 01. März, Seite 324
1. Verfasser: Verhoeven, J Th J (VerfasserIn)
Weitere Verfasser: Jansen, C C C, Werkman, A W, Roenhorst, J W
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2007
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article
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520 |a In November 2005, 13 accessions of Petunia hybrida from the United States of America entered the post-entry quarantine station of the Plant Protection Service in the Netherlands. The plants were inspected and tested for quarantine organisms according to Directives 95/44 and 97/46 of the European Union. No virus and viroid symptoms were observed in the imported plants or in mechanically inoculated plants of Chenopodium quinoa, Nicotiana benthamiana, and N. occidentalis-P1 (3). Testing for pospiviroids by return-polyacrylamide gel electrophoresis (1) and reverse transcriptase-PCR with universal pospiviroid primers Pospi1-RE/FW (2) indicated the presence of pospiviroids in 3 and 11 P. hybrida accessions, respectively. The 196-bp amplicons of six accessions were sequenced. Sequence analysis showed the highest identity for all amplicons to both isolates of Tomato chlorotic dwarf viroid (TCDVd) in NCBI GenBank, Accession Nos. AF162131and AY372399, from Canada and the United States, respectively. Additional RT-PCRs with the Pospi1-RE/FW primers in opposite order and the semi-universal pospiviroid primers Vid-RE/FW (2) for one isolate, followed by sequence analysis, confirmed the identity as TCDVd. The isolate consisted of 359 nucleotides (GenBank Accession No. DQ859013) and showed sequence identities of 98.6 and 96.1% to the Canadian and American tomato isolates of this viroid, respectively. The next highest sequence identity was 90.0% to two accessions of Potato spindle tuber viroid (GenBank Accession Nos. AJ593449 and AY962324). On the basis of these results, the viroid from P. hybrida was identified as TCDVd. To our knowledge, this is the first report of TCDVd in this plant species. Reference: (1) J. W. Roenhorst et al. EPPO Bull. 30:453, 2000. (2) J. Th. J. Verhoeven et al. Eur. J. Plant Pathol. 110:823, 2004. (3) J. Th. J. Verhoeven and J. W. Roenhorst. EPPO Bull. 33:305, 2003 
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