The biology of Phytophthora infestans at its center of origin

N.J. Grünwald, W.G. Flier

    Research output: Contribution to journalArticleAcademicpeer-review

    178 Citations (Scopus)


    The central highlands of Mexico are considered to be a center of genetic diversity for both the potato late blight pathogen and for tuber-bearing Solanum spp. Recent work conducted in Mexico and South America sheds new light on the biology and evolution of Phytophthora infestans and other related Phytophthora pathogens. It now appears that Mexican Solanum species, which coevolved with P. infestans and were previously known for providing a source of R-genes, also provide a source of quantitative, rate-reducing resistance that is highly effective, stable, and durable. It is now apparent that Mexico is the center of origin not only of the potato late blight pathogen P. infestans, but also of several related Phytophthora species including P. mirabilis, P. ipomoeae, and possibly P. phaseoli. We close with the hypothesis that these Phytophthora species evolved sympatrically from one ancestral host through adaptive radiation onto their respective four host families
    Original languageEnglish
    Pages (from-to)171-190
    JournalAnnual Review of Phytopathology
    Publication statusPublished - 2005


    • potato late-blight
    • nevado-de-toluca
    • germplasm collecting expedition
    • broad-spectrum resistance
    • solanum-bulbocastanum
    • central mexico
    • western slopes
    • mont debary
    • interspecific hybridization
    • genetic differentiation


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