Geminivirus C2 protein represses genes involved in sulphur assimilation and this effect can be counteracted by jasmonate treatment
2012
Lozano-Duran, Rosa | Garcia, Irène | Huguet, Stephanie, S. | Balzergue, Sandrine | Romero, Luis C. | Bejarano, Eduardo R. | Universidad de Málaga [Málaga] = University of Málaga [Málaga] | Consejo Superior de Investigaciones Cientificas [España] = Spanish National Research Council [Spain] (CSIC) | Universidad de Sevilla = University of Seville | Unité de recherche en génomique végétale (URGV) ; Institut National de la Recherche Agronomique (INRA)-Université d'Évry-Val-d'Essonne (UEVE)-Centre National de la Recherche Scientifique (CNRS) | Spanish Ministerio de Ciencia y Innovacion/FEDER [AGL2007-66062-C02-02/AGR, AGL2010-22287-CO2]; European Regional Development Fund (ERDF) through the Ministerio de Ciencia e Innovacion [BIO2010-15201]; Junta de Andalucia [BIO273]; Spanish Ministerio de Educacion y Cultura
International audience
Mostrar más [+] Menos [-]Inglés. Geminiviruses are plant viruses that infect a broad range of crops and cause extensive losses worldwide, having an important economic impact. C2, a multifunctional pathogenicity factor encoded by geminiviruses, has been recently shown to suppress the responses to jasmonates in the host plant, which might at least partially explain its well-established role in pathogenicity. Sulphur is one of the essential macro-elements for plant life, and is considered to have a role in plant defence, in a phenomenon named sulphur-induced resistance (SIR) or sulphur-enhanced defence (SED). In this work, we show that geminivirus C2 protein represses the expression of genes involved in the sulphur assimilation pathway in Arabidopsis, but, interestingly, this effect can be neutralized by exogenous jasmonate treatment. These preliminary results may raise the idea that geminiviruses might be affecting sulphur metabolism, and maybe counteracting SIR/SED, through the manipulation of the jasmonate signalling pathway, which would define a novel strategy in plant-virus interactions and may unveil SIR/SED as an important player in the plant defence against viruses.
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Información bibliográfica
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