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Article Dans Une Revue Microbiological Research Année : 2013

Comparison of Botrytis cinerea populations isolated from two open-field cultivated host plants.

Mojtaba Asadollahi
  • Fonction : Auteur
Erzsébet Fekete
  • Fonction : Auteur
Levente Karaffa
  • Fonction : Auteur
Mariann Árnyasi
  • Fonction : Auteur
Mahdi Esmaeili
  • Fonction : Auteur
Kálmán Zoltán Váczy
  • Fonction : Auteur
Erzsébet Sándor
  • Fonction : Auteur

Résumé

The necrotrophic fungus Botrytis cinerea is reported to infect more than 220 host plants worldwide. In phylogenetical-taxonomical terms, the pathogen is considered a complex of two cryptic species, group I and group II. We sampled populations of B. cinerea on sympatric strawberry and raspberry cultivars in the North-East of Hungary for three years during flowering and the harvest period. Four hundred and ninety group II B. cinerea isolates were analyzed for the current study. Three different data sets were generated: (i) PCR-RFLP patterns of the ADP-ATP translocase and nitrate reductase genes, (ii) MSB1 minisatellite sequence data, and (iii) the fragment sizes of five microsatellite loci. The structures of the different populations were similar as indicated by Nei's gene diversity and haplotype diversity. The F statistics (Fst, Gst), and the gene flow indicated ongoing differentiation within sympatric populations. The population genetic parameters were influenced by polymorphisms within the three data sets as assessed using Bayesian algorithms. Data Mining analysis pointed towards the five microsatellite loci as the most defining markers to study differentiation in the 490 isolates. The results suggest the occurrence of host-specific, sympatric divergence of generalist phytoparasites in perennial hosts.

Dates et versions

hal-00848129 , version 1 (25-07-2013)

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Citer

Mojtaba Asadollahi, Erzsébet Fekete, Levente Karaffa, Michel Flipphi, Mariann Árnyasi, et al.. Comparison of Botrytis cinerea populations isolated from two open-field cultivated host plants.. Microbiological Research, 2013, 168 (6), pp.379-88. ⟨10.1016/j.micres.2012.12.008⟩. ⟨hal-00848129⟩
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