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| Description
| - The structure and temporal changes in the virulence of Pseudoperonospora cubensis (causal agent of cucurbit downy mildew) was studied in pathogen populations in the Czech Republic (CR) from 2001 to 2010. A total of 398 P. cubensis isolates collected from Cucumis sativus, Cucumis melo, Cucurbita maxima, Cucurbita pepo, Cucurbita moschata, and Citrullus lanatus were analyzed for variation in virulence (pathotypes) using a differential set of 12 genotypes of cucurbitaceous plants. All isolates of P. cubensis were characterized by their level of virulence (classified according the number of virulence factors, VF; low VF=1-4, medium VF=5-8, high VF=9-12): high (75%), medium (24%) and low (1%). The structure and changes in virulence in the pathogen populations were expressed by pathotypes using tetrade numerical codes and a total of 67 different pathotypes of P. cubensis were determined. In the recent pathogen populations there was prevailing frequency (70-100%) of isolates with high number (9-12) of virulence factors. %22Super pathotype%22 15.15.15 was often observed in the study within the pathogen populations and was one of the four most frequently recorded pathotypes. P. cubensis populations shifted to a higher virulence over time. From 2009 the pathogen population changed dramatically and new pathotypes appeared able to establish the natural and serious infection of Cucurbita spp. and Citrullus lanatus, which was not observed in 2001 to 2008. Generally, the dynamics and virulence structure of P. cubensis populations are extremely variable in the CR.
- The structure and temporal changes in the virulence of Pseudoperonospora cubensis (causal agent of cucurbit downy mildew) was studied in pathogen populations in the Czech Republic (CR) from 2001 to 2010. A total of 398 P. cubensis isolates collected from Cucumis sativus, Cucumis melo, Cucurbita maxima, Cucurbita pepo, Cucurbita moschata, and Citrullus lanatus were analyzed for variation in virulence (pathotypes) using a differential set of 12 genotypes of cucurbitaceous plants. All isolates of P. cubensis were characterized by their level of virulence (classified according the number of virulence factors, VF; low VF=1-4, medium VF=5-8, high VF=9-12): high (75%), medium (24%) and low (1%). The structure and changes in virulence in the pathogen populations were expressed by pathotypes using tetrade numerical codes and a total of 67 different pathotypes of P. cubensis were determined. In the recent pathogen populations there was prevailing frequency (70-100%) of isolates with high number (9-12) of virulence factors. %22Super pathotype%22 15.15.15 was often observed in the study within the pathogen populations and was one of the four most frequently recorded pathotypes. P. cubensis populations shifted to a higher virulence over time. From 2009 the pathogen population changed dramatically and new pathotypes appeared able to establish the natural and serious infection of Cucurbita spp. and Citrullus lanatus, which was not observed in 2001 to 2008. Generally, the dynamics and virulence structure of P. cubensis populations are extremely variable in the CR. (en)
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| Title
| - Structure and temporal shifts in virulence of Pseudoperonospora cubensis populations in the Czech Republic
- Structure and temporal shifts in virulence of Pseudoperonospora cubensis populations in the Czech Republic (en)
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| skos:prefLabel
| - Structure and temporal shifts in virulence of Pseudoperonospora cubensis populations in the Czech Republic
- Structure and temporal shifts in virulence of Pseudoperonospora cubensis populations in the Czech Republic (en)
|
| skos:notation
| - RIV/61989592:15310/12:33141865!RIV13-MSM-15310___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(QH71229), S, Z(MSM6198959215)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61989592:15310/12:33141865
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - cucumber, cucurbit downy mildew, cucurbits, pathotypes, tetrade numerical codes, virulence differentiation (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| |
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Lebeda, Aleš
- Urban, Jiří
- Pavelková, Jana
- Sedláková, Božena
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| http://linked.open...ain/vavai/riv/wos
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| http://linked.open...n/vavai/riv/zamer
| |
| issn
| |
| number of pages
| |
| http://bibframe.org/vocab/doi
| - 10.1111/j.1365-3059.2012.02642.x
|
| http://localhost/t...ganizacniJednotka
| |
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