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Cereal Research Communications

, Volume 36, Supplement 6, pp 625–629 | Cite as

Reproductive mode of central European Fusarium graminearum and F. culmorum populations

  • Beáta Tóth
  • János Varga
  • Ágnes Szabó-Hevér
  • Szabolcs Lehoczki-Krsjak
  • Ákos Mesterházy
Session 6 Taxonomy, Populations Genetics and Genomics of Fusarium spp.

Abstract

Fusarium head blight caused mainly by Fusarium graminearum and F. culmorum is the most important disease of wheat in Central Europe. While F. graminearum is homothallic, no sexual cycle has been observed in F. culmorum. Knowledge regarding the species distribution and population structure of these pathogens is important to estimate their significance for breeding. There are two fundamental means by which fungi and other organisms transmit genes to the next generation: through clonal reproduction or by sexual recombination. To clarify the population structures of F. culmorum and F. graminearum in Central Europe, RAPD and IGS-RFLP data sets of the isolates were subjected to both the index of association tests and tree length tests. Our data indicate that the world-wide F. graminearum and F. culmorum populations have recombining structures, while both the Hungarian F. culmorum and F. graminearum populations reproduce clonally. The frequent occurrence of F. graminearum perithecia on corn residues indicates that this species undergoes a sexual cycle. Both mating type genes have been identified in each examined F. graminearum isolate, while the heterothallic distribution of mating type genes in F. culmorum indicates that this species lost its sexual cycle relatively recently.

Keywords

F. graminearum F. culmorum population structure mating type genes RAPD IGS-RFLP 

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Copyright information

© Akadémiai Kiadó, Budapest 2008

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Beáta Tóth
    • 1
  • János Varga
    • 2
    • 3
  • Ágnes Szabó-Hevér
    • 1
  • Szabolcs Lehoczki-Krsjak
    • 1
    • 4
  • Ákos Mesterházy
    • 1
  1. 1.Cereal Research Non-profit CompanySzegedHungary
  2. 2.Department of Microbiology, Faculty of Science & InformaticsUniversity of SzegedSzegedHungary
  3. 3.CBS Fungal Biodiversity CentreCT UtrechtThe Netherlands
  4. 4.Department of Plant Biology, Faculty of Science & InformaticsUniversity of SzegedSzegedHungary

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