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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-01-18-0077-RE
|2 doi
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|a pubmed24n0962.xml
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|a eng
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| 100 |
1 |
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|a Salgado-Salazar, Catalina
|e verfasserin
|4 aut
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| 245 |
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|a Genetic Variation of the Pathogen Causing Impatiens Downy Mildew Predating and Including Twenty-first Century Epidemics on Impatiens walleriana
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| 264 |
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|c 2018
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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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|a Date Completed 28.02.2019
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|a Date Revised 21.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Impatiens downy mildew (IDM) of cultivated Impatiens walleriana has had a significant economic impact on the ornamental horticulture industry in the United States and globally. Although recent IDM outbreaks started in 2003, downy mildews on noncultivated Impatiens species have been documented since the 1880s. To understand the relationship between the pathogen causing recent epidemics and the pathogen historically present in the United States, this work characterized genetic variation among a collection of 1,000 samples on 18 plant hosts. Samples included collections during recent IDM epidemics and historical herbarium specimens. Ten major genotypes were identified from cloned rDNA amplicon sequencing and endpoint SNP genotyping. Three genotypes accounted for >95% of the samples, with only one of these three genotypes found on samples predating recent IDM outbreaks. Based on phylogenetic analysis integrating data from three markers and the presence of individual genotypes on multiple Impatiens species, there was some evidence of pathogen-specific infection of I. noli-tangere, but the distinction between genotypes infecting I. walleriana and I. balsamina was not upheld. Overall, this work provides evidence that the majority of rDNA genotypes recovered from recent IDM epidemics are different from historical U.S. genotypes, and that these genotypes can infect Impatiens spp. other than I. walleriana
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| 650 |
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|a Journal Article
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| 650 |
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4 |
|a Research Support, U.S. Gov't, Non-P.H.S.
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| 650 |
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7 |
|a DNA, Ribosomal
|2 NLM
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| 700 |
1 |
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|a LeBlanc, Nicholas
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ismaiel, Adnan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Rivera, Yazmín
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Warfield, Colleen Y
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Crouch, Jo Anne
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 102(2018), 12 vom: 01. Dez., Seite 2411-2420
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|x 0191-2917
|7 nnns
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| 773 |
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|g volume:102
|g year:2018
|g number:12
|g day:01
|g month:12
|g pages:2411-2420
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| 856 |
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|u http://dx.doi.org/10.1094/PDIS-01-18-0077-RE
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