First Report on the Occurrence of Grapevine leafroll-associated virus 7 and 9 in Chilean Grapevines

Grapevine is one of the oldest horticultural crops and represents a highly valuable agricultural commodity. So far, nine distinct Grapevine leafroll-associated viruses (GLRaVs) within the Closteroviridae family have been found to be associated with grapevine leafroll disease (3). Previous studies ha...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:Plant disease. - 1997. - 92(2008), 8 vom: 15. Aug., Seite 1252
1. Verfasser: Engel, E A (VerfasserIn)
Weitere Verfasser: Escobar, P, Montt, C, Gómez-Talquenca, S, Valenzuela, P D T
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article
LEADER 01000caa a22002652 4500
001 NLM293948836
003 DE-627
005 20250224205337.0
007 cr uuu---uuuuu
008 231225s2008 xx |||||o 00| ||eng c
024 7 |a 10.1094/PDIS-92-8-1252C  |2 doi 
028 5 2 |a pubmed25n0979.xml 
035 |a (DE-627)NLM293948836 
035 |a (NLM)30769463 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a Engel, E A  |e verfasserin  |4 aut 
245 1 0 |a First Report on the Occurrence of Grapevine leafroll-associated virus 7 and 9 in Chilean Grapevines 
264 1 |c 2008 
336 |a Text  |b txt  |2 rdacontent 
337 |a ƒaComputermedien  |b c  |2 rdamedia 
338 |a ƒa Online-Ressource  |b cr  |2 rdacarrier 
500 |a Date Revised 20.11.2019 
500 |a published: Print 
500 |a Citation Status PubMed-not-MEDLINE 
520 |a Grapevine is one of the oldest horticultural crops and represents a highly valuable agricultural commodity. So far, nine distinct Grapevine leafroll-associated viruses (GLRaVs) within the Closteroviridae family have been found to be associated with grapevine leafroll disease (3). Previous studies have demonstrated a high incidence of GLRaV-1, -2, and -3 in Chile (2). To determine if other GLRaVs were present, 21 dormant cane samples were screened with a comprehensive 70-mer oligonucleotide microarray designed to simultaneously detect all grapevine viruses with total or partial genomic sequence available. The array contained 570 unique probes designed against specific regions of more than 40 viral genomes (E. Engel et al., 15th ICVG [Abstr.], 2006). One sample (cv. Black Seedless) showing a microarray hybridization pattern compatible with a mixed infection of GLRaV-7 and GLRaV-1 was analyzed by ELISA using GLRaV-7 specific antibodies (Agritest, Valenzano, Italy) and reverse transcription (RT)-PCR using virus-specific primers LR7-F: 5'- TAT ATC CCA ACG GAG ATG GC -3' and LR7-R: 5'- ATG TTC CTC CAC CAA AAT CG -3' (based on GenBank Accession No. Y15987). The serological analysis confirmed the presence of GLRaV-7 with further confirmation by the RT-PCR product of 502 bp corresponding to a fragment of the HSP70h gene that was cloned and sequenced. The Chilean GLRaV-7 sequence (GenBank Accession No. EU334662) showed 94% nucleotide and 95% amino acid identity when compared with a corresponding region of another GLRaV-7 isolate from Albania (GenBank Accession No. Y15987). GLRaV-1 infection was confirmed by ELISA (Bioreba AG, Reinach, Switzerland) and RT-PCR. A second sample (cv. Tintorera) showing microarray hybridization pattern compatible with a mixed infection of GLRaV-9 and Grapevine virus A (GVA) was analyzed by RT-PCR using virus-specific primers LR9-F: 5'- CGG CAT AAG AAA AGA TGG CAC -3' and LR9-R: 5'- TCA TTC ACC ACT GCT TGA AC -3' (1). The RT-PCR product of 393 bp corresponding to a fragment of the HSP70h gene was cloned and sequenced (GenBank Accession No. EU334663), showing 94% nucleotide and 95% amino acid identity when compared with a corresponding region of another GLRaV-9 isolate from the United States (GenBank Accession No. AY297819). Since there are no commercial antibodies available for GLRaV-9 detection, a second pair of primers, LR9-F1: 5'- AAA GGT TTC TGC TGG TTA CC -3' and LR9-R1: 5'- CTT TCA GAA CAG TCC TCC TC -3' that amplified a fragment of ORF1a was also used. The 301-bp product was cloned and sequenced (GenBank Accession No. EU588989) showing 93.7% nucleotide and 98% amino acid identity when compared with a corresponding region of another GLRaV-9 isolate (GenBank Accession No. AY297819). GVA infection was confirmed by ELISA (Bioreba AG) and RT-PCR. To our knowledge, this is the first report of GLRaV-7 and GLRaV-9 in Chile. Further studies will help determine the effect and incidence of these viruses in Chilean grapevines. References: (1) R. Alkowni et al. J. Plant Pathol. 86:123, 2004. (2) N. Fiore et al. J. Plant Pathol. 90:125, 2008. (3) G. P. Martelli and E. Boudon-Padieu. Options Méditerr. B55, 2006 
650 4 |a Journal Article 
700 1 |a Escobar, P  |e verfasserin  |4 aut 
700 1 |a Montt, C  |e verfasserin  |4 aut 
700 1 |a Gómez-Talquenca, S  |e verfasserin  |4 aut 
700 1 |a Valenzuela, P D T  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Plant disease  |d 1997  |g 92(2008), 8 vom: 15. Aug., Seite 1252  |w (DE-627)NLM098181742  |x 0191-2917  |7 nnns 
773 1 8 |g volume:92  |g year:2008  |g number:8  |g day:15  |g month:08  |g pages:1252 
856 4 0 |u http://dx.doi.org/10.1094/PDIS-92-8-1252C  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_NLM 
912 |a GBV_ILN_350 
951 |a AR 
952 |d 92  |j 2008  |e 8  |b 15  |c 08  |h 1252