Effector profile analysis of the tomato and pepper pathogens Xanthomonas perforans and X. euvesicatoria

Iruegas-Bocardo Fernanda, Timilsina Sujan, Jibrin Mustafa O., Minsavage Gerald V., Abrahamian Peter, Egel Daniel S., Creswell Tom, Miller Sydney, Rotondo Francesca, Louws Frank John, Adhikari Tushar, Trueman Cheryl L., Roach Rebecca, Coutinho Teresa A., Pruvost Olivier, Nga Nguyen Thi Thu, Luo Laixin, Kebede Misrak, Potnis Neha, Vallad Gary E., Jones Jeffrey B., Goss Erica. 2019. Effector profile analysis of the tomato and pepper pathogens Xanthomonas perforans and X. euvesicatoria. Molecular Plant-Microbe Interactions, 32 (10S), Résumé : 186-187. Congress of International-Society-for-Molecular-Plant-Microbe-Interactions (IS-MPMI), Glasgow, Royaume-Uni, 14 Juillet 2019/18 Juillet 2019.

Quartile : Q1, Sujet : PLANT SCIENCES / Quartile : Q2, Sujet : BIOTECHNOLOGY & APPLIED MICROBIOLOGY / Quartile : Q2, Sujet : BIOCHEMISTRY & MOLECULAR BIOLOGY

Résumé : Bacterial plant pathogens secrete type III effectors (T3Es) to interact with and disrupt host cell defenses. Susceptibility or resistance of the host depends on their ability to recognize and restrict the establishment of the pathogen. Xanthomonas euvesicatoria (Xe) and X.perforans (Xp), causal agents of bacterial spot disease (BLS) on tomato and pepper, are informative models to study the roles of effectors in host-pathogen interactions. Xe infects tomato and pepper, Xp infects only tomato, however, Xp strains have been isolated from pepper. To understand factors that influence the presence and distribution of effectors between and within species, we sequenced and analyzed the effector profiles of 179 and 131 strains, collected in 13 countries over time (25 to 56 yrs) for Xp and Xe, respectively. Both pathogens are distributed worldwide and follow a classical gene-for-gene interaction defining pathogenicity and virulence with respect to their host. Consequently, host, year and geographic origin were expected to influence the effector profiles of strains, including effector presence and allelic state. The core and non-core effectors within and between Xp and Xe strains are described, expanding previous knowledge of their effector content. However, host, year and country of collection do not explain the variation in effector profiles suggesting migration and distribution of strains impacts the population structure more than local demographic processes.

Mots-clés Agrovoc : Xanthomonas, relation hôte pathogène, Solanum lycopersicum, effecteur moléculaire, maladie bactérienne, pouvoir pathogène, hôte, agent pathogène, plante hôte, virulence, allomone

Auteurs et affiliations

• Iruegas-Bocardo Fernanda, University of Florida (USA)
• Timilsina Sujan, University of Florida (USA)
• Jibrin Mustafa O., University of Florida (USA)
• Minsavage Gerald V., University of Florida (USA)
• Abrahamian Peter, University of Florida (USA)
• Egel Daniel S., Purdue University (USA)
• Creswell Tom, Purdue University (USA)
• Miller Sydney, Ohio State University (USA)
• Rotondo Francesca, Ohio State University (USA)
• Louws Frank John, North Carolina State University (USA)
• Adhikari Tushar, North Carolina State University (USA)
• Trueman Cheryl L., University of Guelph (CAN)
• Roach Rebecca, Department of Agriculture and Fisheries (AUS)
• Coutinho Teresa A., University of Pretoria (ZAF)
• Pruvost Olivier, CIRAD-BIOS-UMR PVBMT (REU)
• Nga Nguyen Thi Thu, Can Tho University (VNM)
• Luo Laixin, CAU [China Agricultural University] (CHN)
• Kebede Misrak, Haramaya University (ETH)
• Potnis Neha, Auburn University (USA)
• Vallad Gary E., University of Florida (USA)
• Jones Jeffrey B., University of Florida (USA)
• Goss Erica, University of Florida (USA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/605794/)

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