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231225s2006 xx |||||o 00| ||eng c |
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|a 10.1094/PD-90-0526C
|2 doi
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Putnam, M L
|e verfasserin
|4 aut
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| 245 |
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|a Pathogenic Isolates of Rhodococcus fascians from New Hosts in the United States
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| 264 |
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|c 2006
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| 336 |
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|2 rdacarrier
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| 500 |
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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 Rhodococcus fascians is important to the nursery industry due to its broad host range (68 genera) (2) and potential for horizontal gene transfer of plasmid-borne virulence genes. Since 2001, many herbaceous ornamental plants with symptoms of leafy galls or basal or axillary shoot proliferation suggestive of infection by R. fascians have been submitted to the Oregon State University Plant Clinic for diagnosis. R. fascians was isolated from symptomatic plants by placing affected tissues into saline or liquid D2 medium (1) for 30 to 120 min and then dilution plating onto D2 agar. Orange colonies were purified by dilution streaking and identified as R. fascians by substrate utilization (Biolog, Hayward, CA) and fatty acid analysis (L. Barnes, Texas A & M University, College Station, TX). Pathogenicity was confirmed by inoculation of 10 newly germinated Pisum sativum 'Laxton Progress' and 'Sugar Pod' seedlings with bacteria from 2-day-old cultures (107 CFU/ml) or water (controls). Our isolates produced shoot proliferations typical of R. fascians infection of peas, confirming pathogenicity. Control plants remained healthy. Pathogenic R. fascians isolates were associated with and isolated from eight species not previously reported as hosts: Acanthus mollis, Campanula sarastro, Heliopsis helianthoides 'Loraine Sunshine', Nemesia × 'Natalie', Hosta × 'Blue Umbrella', Verbascum 'Sierra Sunset', Veronica spicata 'Minuet' and Viola × 'Purple Showers'. References: (1) N. W. Schaad et al. Laboratory Guide to Plant Pathogenic Bacteria. The American Phytopathological Society, 2001. (2) D. Vereecke et al. Mol. Plant-Microbe Interact. 6:53, 2003
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| 650 |
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|a Journal Article
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| 700 |
1 |
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|a Miller, M
|e verfasserin
|4 aut
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|i Enthalten in
|t Plant disease
|d 1997
|g 90(2006), 4 vom: 19. Apr., Seite 526
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|g volume:90
|g year:2006
|g number:4
|g day:19
|g month:04
|g pages:526
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| 856 |
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|u http://dx.doi.org/10.1094/PD-90-0526C
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