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231225s2002 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS.2002.86.12.1403B
|2 doi
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|a pubmed24n0981.xml
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|a eng
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| 100 |
1 |
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|a Tessitori, M
|e verfasserin
|4 aut
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|a Polygala myrtifolia as a New Natural Host of Cucumber mosaic virus
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|c 2002
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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 Cucumber mosaic virus (CMV), Tomato spotted wilt virus (TSWV), and Impatiens necrotic spot virus (INSV) are among the most important viral pathogens of ornamental plants (1). Polygala myrtifolia L. (myrtle-leaf milkwort), originating from South Africa, and a member of the Polygalaceae, was recently introduced in Italy as a cultivated ornamental shrub for its fast and attractive free-flowering growth and drought-resistant characteristics. It can become an invasive plant and is now considered a serious problem in coastal areas of Australia where it was introduced as a garden plant. In Italy, P. myrtifolia is propagated by cuttings in commercial nurseries during the summer. In the winter of 2002, plants of P. myrtifolia growing in pots in an ornamental nursery in Sicily showed virus-like mosaic and malformation of leaves that appeared lanceolate with a lack of flowering. Leaf tissue was analyzed by double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) with polyclonal antisera to CMV, TSWV (Lettuce type), and INSV. Positive ELISA results were obtained only with the CMV polyclonal antisera. Complete remission of symptoms was observed on new flushes after pruning and incubation of infected plants at warm temperatures (30 and 20°C, day and night, respectively). This evidence led to the hypothesis that the disease or virus was disseminated by transportation and propagation of plants without visible symptoms during the hot season. A survey was also performed in two historical gardens of Catania (Sicily) where a group of apparently healthy P. myrtifolia plants, from the previously mentioned ornamental nursery in Sicily, were introduced as a single specimen or to form a hedge. These plants showed the same leaf malformations and mosaic symptoms observed in the nursery. DAS-ELISA confirmed the presence of CMV but not TSWV and INSV. To our knowledge, this is the first report of CMV on P. myrtifolia and it adds a new host to over 1,000 species (85 plant families) infected by this virus. Reference: (1) M. L. Daughtrey et al. Plant Dis. 81:1220, 1997
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|a Journal Article
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1 |
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|a Reina, A
|e verfasserin
|4 aut
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1 |
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|a Catara, V
|e verfasserin
|4 aut
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| 700 |
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|a Polizzi, G
|e verfasserin
|4 aut
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|i Enthalten in
|t Plant disease
|d 1997
|g 86(2002), 12 vom: 01. Dez., Seite 1403
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|x 0191-2917
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|g year:2002
|g number:12
|g day:01
|g month:12
|g pages:1403
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|u http://dx.doi.org/10.1094/PDIS.2002.86.12.1403B
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