European Journal of Plant Pathology

, Volume 139, Issue 3, pp 641–653 | Cite as

Characterization of Pseudoperonospora cubensis isolates from Europe and Asia using ISSR and SRAP molecular markers

  • İlknur Polat
  • Ömür BaysalEmail author
  • Francesco Mercati
  • Miloslav Kitner
  • Yigal Cohen
  • Ales Lebeda
  • Francesco Carimi
Original Research


Downy mildew caused by Pseudoperonospora cubensis is a major disease of cucurbits worldwide. New genotypes of the pathogen have recently appeared in the USA, EU and Israel causing breakdown of genetic resistance, expansion of host range, and the appearance of a new A2 mating type. Seventy-eight P. cubensis isolates were collected during 1996–2011 from cucurbits fields in different regions of Turkey, Israel and the Czech Republic and genetic diversity was analysed using highly polymorphic ISSR and SRAP molecular markers. The data acquired showed remarkable genetic diversity within and among the isolates. While isolates from Turkey and Czech Republic exhibited uniform genetic background, the isolates from Israel were clearly distinguished from the others. The results may indicate on migration and/or frequent sexual reproduction of the pathogen in Israel. Moreover the selected markers can be suggested for monitoring genetic diversity within P. cubensis isolates in further studies.


Cucumis sativus Cucurbits Cucurbit downy mildew Genetic diversity Pathotypes Population structure Mating type 



The research of IP and OB, FM, YC, FC was supported by Republic of Turkey Ministry of Food, Agriculture and Livestock Projects (TAGEM-BS-10/10-11/02-09). MK and AL were supported by Palacký University funds (IGA PrF-2014-001), by MSM 6198959215 (Ministry of Education, Youth and Sports of the Czech Republic) and QH 71229 (Czech Ministry of Agriculture).


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Copyright information

© Koninklijke Nederlandse Planteziektenkundige Vereniging 2014

Authors and Affiliations

  • İlknur Polat
    • 2
  • Ömür Baysal
    • 1
    Email author
  • Francesco Mercati
    • 3
  • Miloslav Kitner
    • 5
  • Yigal Cohen
    • 4
  • Ales Lebeda
    • 5
  • Francesco Carimi
    • 3
  1. 1.Department of Molecular Biology and Genetic, Faculty of Life SciencesMuğla Sıtkı Koçman UniversityMuğlaTurkey
  2. 2.Batı Akdeniz Agricultural Research InstituteAntalyaTurkey
  3. 3.Research Division PalermoInstitute of Biosciences and Bioresources (IBBR) – CNRPalermoItaly
  4. 4.The Mina and Everard Goodman Faculty of Life SciencesBar Ilan UniversityRamat-GanIsrael
  5. 5.Department of Botany, Faculty of SciencePalacky University in OlomoucOlomoucCzech Republic

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