Plants 2016, 5(1), 8; https://doi.org/10.3390/plants5010008
The C2 Protein from the Geminivirus Tomato Yellow Leaf Curl Sardinia Virus Decreases Sensitivity to Jasmonates and Suppresses Jasmonate-Mediated Defences
Tábata Rosas-Díaz 1,2, Alberto P. Macho 1,2, Carmen R. Beuzón 1, Rosa Lozano-Durán 1,2,†,*
and Eduardo R. Bejarano 1,†,*
and Eduardo R. Bejarano 1,†,*
1
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
2
Shanghai Center for Plant Stress Biology (PSC), Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai 201602, China
†
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Academic Editor: Debora Gasperini
Received: 30 October 2015 / Revised: 11 January 2016 / Accepted: 11 January 2016 / Published: 15 January 2016
(This article belongs to the Special Issue The Jasmonate Pathway)
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. View Full-TextKeywords:
plant virus; jasmonates; defence; C2; SCFCOI1; coronatine; geminivirus
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Rosas-Díaz, T.; Macho, A.P.; Beuzón, C.R.; Lozano-Durán, R.; Bejarano, E.R. The C2 Protein from the Geminivirus Tomato Yellow Leaf Curl Sardinia Virus Decreases Sensitivity to Jasmonates and Suppresses Jasmonate-Mediated Defences. Plants 2016, 5, 8.
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