Combating a Global Threat to a Clonal Crop: Banana Black Sigatoka Pathogen Pseudocercospora fijiensis (Synonym Mycosphaerella fijiensis) Genomes Reveal Clues for Disease Control

Rafael E. Arango Isaza, Caucasella Diaz-Trujillo, Braham Dhillon, Andrea Aerts, Jean Carlier, Charles F. Crane, Tristan V. de Jong, Ineke de Vries, Robert Dietrich, Andrew D. Farmer, Claudia Fortes Fereira, Suzana Garcia, Mauricio Guzman, Richard C. Hamelin, Erika A. Lindquist, Rahim Mehrabi, Olman Quiros, Jeremy Schmutz, Harris Shapiro, Elizabeth ReynoldsGabriel Scalliet, Jr. Souza Manoel, Ioannis Stergiopoulos, Theo A. J. Van der Lee, Pierre J. G. M. De Wit, Marie-Françoise Zapater, Lute-Harm Zwiers, Igor V. Grigoriev, Stephen B. Goodwin, Gert H. J. Kema

    Research output: Contribution to journal/periodicalArticleScientificpeer-review

    Abstract

    Black Sigatoka or black leaf streak disease, caused by the ascomycete fungus Pseudocercospora fijiensis, inflicts huge costs on banana producers, due to crop losses and expenses for disease control. The global banana export trade relies on Cavendish clones that are highly susceptible to P. fijiensis. Sustainable production of the world’s number one fruit requires a better understanding of host resistance and sophisticated management of fungicide resistance in the pathogen. In the P. fijiensis genome sequence we identified an effector that induced an HR-like necrosis on a resistant banana accession but not on a susceptible cultivar. If validated, this assay may be useful for identifying resistance in banana breeding programs. We also used the genomic sequence to develop highly polymorphic molecular markers for analyzing P. fijiensis field populations and identified a strong enrichment (nearly 100%) for fungicide resistance markers in fungicide-treated banana plantations compared to untreated wild-type populations. This rapid evolution of fungicide resistance poses an immediate threat to sustainable banana production.

    Original languageEnglish
    Pages (from-to)e1005876
    JournalPLoS Genetics
    Volume12
    Issue number8
    DOIs
    Publication statusPublished - 11 Aug 2016

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