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Genetic Structure of Mycosphaerella graminicola Populations from Iran, Argentina and Australia

Jürgens, Tim ; Linde, Celeste ; McDonald, Bruce

In: European Journal of Plant Pathology, 2006, vol. 115, no. 2, p. 223-233

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    Titre
    • Genetic Structure of Mycosphaerella graminicola Populations from Iran, Argentina and Australia
    Auteur
    • Jürgens, Tim. Plant Pathology, Institute of Integrative Biology, ETH Zurich, ETH Zentrum/LFW, Universitätstrasse 2, CH-8092, Zürich, Switzerland
    • Linde, Celeste. School of Botany and Zoology, Australian National University, Bldg 116, Daley Rd, 0200, Canberra, ACT, Australia
    • McDonald, Bruce. Plant Pathology, Institute of Integrative Biology, ETH Zurich, ETH Zentrum/LFW, Universitätstrasse 2, CH-8092, Zürich, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • European Journal of Plant Pathology, 2006, vol. 115, no. 2, p. 223-233. Kluwer Academic Publishers
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:316125
    Summary
    Restriction fragment length polymorphism (RFLP) markers were used to assess the genetic structure of populations of Mycosphaerella graminicola collected from wheat fields. A total of 585 isolates representing 10 field populations were sampled from Iran, Argentina and Australia. The genetic structure of M. graminicola populations from Iran and Argentina is described for the first time. Results were compared to previously investigated populations from Israel, Uruguay and Australia. Populations from Iran exhibited high clonality and low gene diversity, suggesting an inoculation event. Populations from uninoculated fields in Argentina had gene and genotype diversities similar to previously described European and North American populations. Genotype diversity was high for populations from Australia and tests for multilocus associations were consistent with sexual recombination in these populations. Gene diversity was low and fixed alleles were found for several loci. These findings are consistent with a relatively small founding population for Australia. These 10 new populations were integrated into a genetic distance comparison with 13 global populations that were characterized earlier