Characterization of Phytophthora infestans populations in northwestern Algeria during 2008-2014

Fatma Zohra Rekad (Lead / Corresponding author), David Edward Llewelyn Cooke, Ivana Puglisi, Eva Randall, Yamina Guenaoui, Zouaoui Bouznad, Maria Evoli, Antonella Pane, Leonardo Schena, Gaetano Magnano di San Lio, Santa Olga Cacciola (Lead / Corresponding author)

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20 Citations (Scopus)


A total of 161 Phytophthora infestans isolates, collected from infected potato and tomato plants during 2008-2014, were characterized based on mating type, metalaxyl sensitivity and polymorphism at 12 simple sequence repeat (SSR) loci, in order to investigate the population of P. infestans in the north-west of Algeria, an emerging potato production region. The majority of isolates were of A2 mating type (112 isolates). A high percentage (89 %) of resistance to metalaxyl among isolates was detected. The metalaxyl resistant phenotype was present in both mating types with a higher percentage in A2 mating type isolates. SSR-based genotypic analysis of P. infestans population showed a low diversity. Genotype 13_A2 was the predominant in the population with a frequency of 67 % followed by 2_A1 (21 %) and 23_A1 (5 %). Genotype 23_A1 was detected only in tomato and potato isolates collected in 2013 and 2014.

Original languageEnglish
Pages (from-to)467-477
Number of pages11
JournalFungal Biology
Issue number5
Early online date6 Feb 2017
Publication statusPublished - May 2017


  • Late blight
  • Mating type
  • Metalaxyl
  • Potato
  • SSR markers
  • Tomato


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