title: Resistance inducers modulate Pseudomonas syringae pv. tomato strain DC3000 response in tomato plants.
abstract: The efficacy of hexanoic acid (Hx) as an inducer of resistance in tomato plants against Pseudomonas syringae pv. tomato DC3000 was previously demonstrated, and the plant response was characterized. Because little is known about the reaction of the pathogen to this effect, the goal of the present work was to determine whether the changes in the plant defence system affect the pathogen behaviour. This work provides the first demonstration of the response of the pathogen to the changes observed in plants after Hx application in terms of not only the population size but also the transcriptional levels of genes involved in quorum sensing establishment and pathogenesis. Therefore, it is possible that Hx treatment attenuates the virulence and survival of bacteria by preventing or diminishing the appearance of symptoms and controlling the growth of the bacteria in the mesophyll. It is interesting to note that the gene transcriptional changes in the bacteria from the treated plants occur at the same time as the changes in the plants. Hx is able to alter bacteria pathogenesis and survival only when it is applied as a resistance inducer because the changes that it promotes in plants affect the bacteria.
authors.affiliation: Grup de Bioquímica i Biotecnologia, Area de Fisiologia Vegetal, Departament de Ciències Agràries i del Medi Natural, ESTCE, Universitat Jaume I, Castellón, Spain.
authors.forename: Loredana
authors.initials: L
authors.lastname: Scalschi
authors.affiliation: Grup de Bioquímica i Biotecnologia, Area de Fisiologia Vegetal, Departament de Ciències Agràries i del Medi Natural, ESTCE, Universitat Jaume I, Castellón, Spain.
authors.forename: Gemma
authors.initials: G
authors.lastname: Camañes
authors.affiliation: Grup de Bioquímica i Biotecnologia, Area de Fisiologia Vegetal, Departament de Ciències Agràries i del Medi Natural, ESTCE, Universitat Jaume I, Castellón, Spain.
authors.forename: Eugenio
authors.initials: E
authors.lastname: Llorens
authors.affiliation: Grup de Bioquímica i Biotecnologia, Area de Fisiologia Vegetal, Departament de Ciències Agràries i del Medi Natural, ESTCE, Universitat Jaume I, Castellón, Spain.
authors.forename: Emma
authors.initials: E
authors.lastname: Fernández-Crespo
authors.affiliation: Departamento de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigaciones Agrarias (IVIA), Apartado Oficial, Moncada, Valencia, Spain.
authors.forename: María M
authors.initials: MM
authors.lastname: López
authors.affiliation: Grup de Bioquímica i Biotecnologia, Area de Fisiologia Vegetal, Departament de Ciències Agràries i del Medi Natural, ESTCE, Universitat Jaume I, Castellón, Spain.
authors.forename: Pilar
authors.initials: P
authors.lastname: García-Agustín
authors.affiliation: Grup de Bioquímica i Biotecnologia, Area de Fisiologia Vegetal, Departament de Ciències Agràries i del Medi Natural, ESTCE, Universitat Jaume I, Castellón, Spain.
authors.forename: Begonya
authors.initials: B
authors.lastname: Vicedo
mesh_terms: D002208:Caproates / Q000494:pharmacology*; D015964:Gene Expression Regulation, Bacterial / Q000187:drug effects*; D018551:Solanum lycopersicum / Q000382:microbiology*; D010935:Plant Diseases / Q000382:microbiology*; D044224:Pseudomonas syringae / Q000187:drug effects* / Q000235:genetics / Q000378:metabolism
chemical_list: D002208:Caproates; C037652:hexanoic acid