Evaluation of the Effect of ‘Candidatus Liberibacter Solanacearum’ Haplotypes in Tobacco Infection

‘Candidatus Liberibacter solanacearum’ (Lso) is a phloem-limited bacterial plant pathogen infecting solanaceous plants in the Americas and New Zealand associated with diseases of apiaceous crops Europe, Northern Africa, Middle East. This also related to other species that infect crops. In USA, two haplotypes Lso, LsoA LsoB, are predominant responsible for potato tomato. Tobacco, Nicotiana tabacum, model study defenses, host Lso; therefore, interaction between Lso this could be used Liberibacter?plant interactions. study, we characterized infection LsoB tobacco. Under laboratory conditions, caused more severe symptoms than LsoA, titers were dynamic during 7 weeks experiment. We measured SA metabolites, including oxylipins, at an early point found was accumulated infected but not LsoA; whereas ABA levels reduced LsoA- LsoB-infected plants.