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Multilocus sequence analysis of xanthomonads causing bacterial spot of tomato and pepper plants reveals strains generated by recombination among species and recent global spread of Xanthomonas gardneri

Timilsina Sujan, Jibrin Mustafa O., Potnis Neha, Minsavage Gerald V., Kebede Misrak, Schwartz Allison, Bart Rebecca, Staskawicz Brian, Boyer Claudine, Vallad Gary E., Pruvost Olivier, Jones Jeffrey R., Goss Erica. 2015. Multilocus sequence analysis of xanthomonads causing bacterial spot of tomato and pepper plants reveals strains generated by recombination among species and recent global spread of Xanthomonas gardneri. Applied and Environmental Microbiology, 81 (4) : pp. 1520-1529.

Journal article ; Article de revue à facteur d'impact
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Quartile : Q1, Sujet : BIOTECHNOLOGY & APPLIED MICROBIOLOGY / Quartile : Q2, Sujet : MICROBIOLOGY

Abstract : Four Xanthomonas species are known to cause bacterial spot of tomato and pepper, but the global distribution and genetic diversity of these species are not well understood. A collection of bacterial spot-causing strains from the Americas, Africa, Southeast Asia, and New Zealand were characterized for genetic diversity and phylogenetic relationships using multilocus sequence analysis of six housekeeping genes. By examining strains from different continents, we found unexpected phylogeographic patterns, including the global distribution of a single multilocus haplotype of X. gardneri, possible regional differentiation in X. vesicatoria, and high species diversity on tomato in Africa. In addition, we found evidence of multiple recombination events between X. euvesicatoria and X. perforans. Our results indicate that there have been shifts in the species composition of bacterial spot pathogen populations due to the global spread of dominant genotypes and that recombination between species has generated genetic diversity in these populations. (Résumé d'auteur)

Mots-clés Agrovoc : Xanthomonas, Xanthomonas campestris vesicatoria, Xanthomonas campestris, Distribution géographique, Variation génétique, Séquence nucléotidique, Génome, Phylogénie, Génétique des populations, Recombinaison, Mutation, Provenance, Pathotype, Génotype

Mots-clés géographiques Agrovoc : Monde, États-Unis, Afrique, océan Indien, Réunion, Madagascar, Floride

Mots-clés complémentaires : Xanthomonas vesicatoria, Xanthomonas gardneri, Xanthomonas euvesicatoria, Xanthomonas perforans

Classification Agris : H20 - Plant diseases

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

  • Timilsina Sujan, University of Florida (USA)
  • Jibrin Mustafa O., University of Florida (USA)
  • Potnis Neha, University of Florida (USA)
  • Minsavage Gerald V., University of Florida (USA)
  • Kebede Misrak, Haramaya University (ETH)
  • Schwartz Allison, UCR (USA)
  • Bart Rebecca, UCR (USA)
  • Staskawicz Brian, UCR (USA)
  • Boyer Claudine, CIRAD-BIOS-UMR PVBMT (REU)
  • Vallad Gary E., University of Florida (USA)
  • Pruvost Olivier, CIRAD-BIOS-UMR PVBMT (REU)
  • Jones Jeffrey R., University of Florida (USA)
  • Goss Erica, University of Florida (USA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/575745/)

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