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|a 10.1094/PDIS-07-10-0499
|2 doi
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|a eng
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|a Montes-Borrego, Miguel
|e verfasserin
|4 aut
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|a Real-Time PCR Quantification of Peronospora arborescens, the Opium Poppy Downy Mildew Pathogen, in Seed Stocks and Symptomless Infected Plants
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|c 2011
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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 this study, we developed a reliable, quick, and accurate quantitative polymerase chain reaction (qPCR) assay based on the MIQE (Minimum Information for publication of Quantitative Real-Time PCR Experiments) guidelines for the quantification of Peronospora arborescens in infected downy mildew-symptomless opium poppy (Papaver somniferum) tissues and commercial seed stocks. The protocol was highly reproducible and allowed accurate quantification of pathogen DNA up to 10 fg in different plant DNA backgrounds without losing specificity and efficiency. Moreover, to further overcome difficulties conferred by the strict biotrophy of this pathogen, we developed dilution series of DNA extracted from a plasmid with the target pathogen DNA as a cloned insert. This facilitated the demonstration of the robustness of the protocol in different laboratories with different qPCR equipment and reagents, which may help in its use on a broad scale. Finally, we validated the usefulness of the qPCR protocol for quarantine purposes and downy mildew resistance screening by quantifying P. arborescens in complex, naturally infested opium poppy samples. Thus, a pathogen biomass of 0.0003 to 0.007‰ or of 0.110 to 5,557 ppm was quantified in symptomless capsules in commercial seed stocks, or in stem samples from symptomless opium poppy plants systemically infected by the pathogen, respectively
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|a Journal Article
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|a Muñoz-Ledesma, Francisco J
|e verfasserin
|4 aut
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|a Jiménez-Díaz, Rafael M
|e verfasserin
|4 aut
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| 700 |
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|a Landa, Blanca B
|e verfasserin
|4 aut
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|i Enthalten in
|t Plant disease
|d 1997
|g 95(2011), 2 vom: 31. Feb., Seite 143-152
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|x 0191-2917
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|g volume:95
|g year:2011
|g number:2
|g day:31
|g month:02
|g pages:143-152
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|u http://dx.doi.org/10.1094/PDIS-07-10-0499
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