title: The C2 Protein from the Geminivirus Tomato Yellow Leaf Curl Sardinia Virus Decreases Sensitivity to Jasmonates and Suppresses Jasmonate-Mediated Defences.
abstract: An increasing body of evidence points at a role of the plant hormones jasmonates (JAs) in determining the outcome of plant-virus interactions. Geminiviruses, small DNA viruses infecting a wide range of plant species worldwide, encode a multifunctional protein, C2, which is essential for full pathogenicity. The C2 protein has been shown to suppress the JA response, although the current view on the extent of this effect and the underlying molecular mechanisms is incomplete. In this work, we use a combination of exogenous hormone treatments, microarray analysis, and pathogen infections to analyze, in detail, the suppression of the JA response exerted by C2. Our results indicate that C2 specifically affects certain JA-induced responses, namely defence and secondary metabolism, and show that plants expressing C2 are more susceptible to pathogen attack. We propose a model in which C2 might interfere with the JA response at several levels.
authors.affiliation: Departamento de Biología Celular, Genética y Fisiología, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Campus de Teatinos, E-29071 Malaga, Spain. tabatarosas@sibs.ac.cn.|Shanghai Center for Plant Stress Biology (PSC), Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai 201602, China. tabatarosas@sibs.ac.cn.
authors.forename: Tábata
authors.initials: T
authors.lastname: Rosas-Díaz
authors.affiliation: Departamento de Biología Celular, Genética y Fisiología, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Campus de Teatinos, E-29071 Malaga, Spain. alberto.macho@sibs.ac.cn.|Shanghai Center for Plant Stress Biology (PSC), Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai 201602, China. alberto.macho@sibs.ac.cn.
authors.forename: Alberto P
authors.initials: AP
authors.lastname: Macho
authors.affiliation: Departamento de Biología Celular, Genética y Fisiología, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Campus de Teatinos, E-29071 Malaga, Spain. cbl@uma.es.
authors.forename: Carmen R
authors.initials: CR
authors.lastname: Beuzón
authors.affiliation: Departamento de Biología Celular, Genética y Fisiología, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Campus de Teatinos, E-29071 Malaga, Spain. lozano-duran@sibs.ac.cn.|Shanghai Center for Plant Stress Biology (PSC), Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai 201602, China. lozano-duran@sibs.ac.cn.
authors.forename: Rosa
authors.initials: R
authors.lastname: Lozano-Durán
authors.affiliation: Departamento de Biología Celular, Genética y Fisiología, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Campus de Teatinos, E-29071 Malaga, Spain. edu_rodri@uma.es.
authors.forename: Eduardo R
authors.initials: ER
authors.lastname: Bejarano
keywords: C2; SCFCOI1; coronatine; defence; geminivirus; jasmonates; plant virus