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231225s2010 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-94-1-0125B
|2 doi
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|a eng
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| 100 |
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|a Koike, S T
|e verfasserin
|4 aut
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| 245 |
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|a First Report of Tobacco rattle virus in Spinach in California
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|c 2010
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| 336 |
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 20.11.2019
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a In 2009 in coastal California (Santa Barbara County), commercially grown spinach (Spinacia oleracea) in two nearby fields exhibited symptoms of a previously unrecognized virus-like disease. Symptoms consisted of general chlorosis and bright yellow blotches and spots. Necrotic spots were also associated with the disease. In affected fields, disease occurred in limited, irregularly shaped patches that ranged from one to several meters in diameter. Symptomatic plants were unmarketable and these small patches of spinach were not harvested. With a transmission electron microscope, rigid, rod-shaped particles with a clear central canal were observed from plant sap of the symptomatic spinach. Analysis by a double-antibody sandwich-ELISA assay (Agdia Inc., Elkhart, IN) for Tobacco rattle virus (TRV) showed that the symptomatic plants were positive. Symptomatic spinach from the field was used for mechanical transmission to Chenopodium quinoa, C. murale, C. capitatum, spinach, and sugar beet (Beta vulgaris). All inoculated plants showed chlorotic local lesions and sugar beet showed chlorotic local lesions with rings. To further confirm the presence of TRV, reverse transcription (RT)-PCR was conducted. Total RNA was extracted from the mechanically inoculated symptomatic spinach plants using an RNeasy Plant Kit (Qiagen Inc., Valencia, CA) and used as a template in RT-PCR with forward (5'-TACATCACATCTGCCTGC-3') and reverse (5'-CTTCATTCACACAACCCTTG-3') primers specific to the movement protein gene from the spinach isolate of TRV (GenBank Accession No. AJ007294). Amplicons of the expected size (approximately 562 bp) were obtained. The RT-PCR products were sequenced (GenBank Accession No. GU002156) and compared with TRV sequences in GenBank to confirm the identity of the products. Sequences obtained had 96% nucleotide identity and 97% amino acid identity with TRV sequences available under the GenBank Accession Nos. FJ357571 and AJ007294. On the basis of the data from electron microscopy and serological and molecular analyses, the virus was identified as TRV. Soil samples collected from one of the fields were assayed for nematodes; however, Paratrichodorus or Trichodorus species were not recovered. To our knowledge, this is the first report of TRV in spinach in California. TRV has also been reported in spinach in England (1) and Germany (2). References: (1) A. Kurppa et al. Ann. Appl. Biol. 98:243, 1981. (2) K. Schmidt and R. Koenig. Arch. Virol. 144:503, 1999
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|a Journal Article
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|a Tian, T
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|a Liu, H-Y
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 94(2010), 1 vom: 13. Jan., Seite 125
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|x 0191-2917
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|g year:2010
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|g day:13
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|u http://dx.doi.org/10.1094/PDIS-94-1-0125B
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