<i>Tobamovirus</i> coat protein CPCg induces an HR-like response in sensitive tobacco plants

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dc.contributor.authorEhrenfeld, N
dc.contributor.authorCañón, P
dc.contributor.authorStange, C
dc.contributor.authorMedina, C
dc.contributor.authorArce-Johnson, P
dc.date.accessioned2025-01-21T01:06:53Z
dc.date.available2025-01-21T01:06:53Z
dc.date.issued2005
dc.description.abstractWhen inoculated into sensitive tobacco Xanthi-nn plants, the crucifer and garlic-infecting Tobacco mosaic virus (TMV-Cg) induces local necrotic lesions that resemble those seen in the hypersensitive response (HR) of resistant tobacco plants. However, unlike these, tobacco Xanthi-nn plants do not become resistant to infection and the virus spreads systemically causing a severe disease characterized by necrotic lesions throughout the plant. To identify the viral protein that elicits this necrotic response, we used a set of hybrid viruses constructed by combination of TMV-Cg and the tobacco mosaic virus strain U1 (TMV-U1). In this study we present evidence that the coat protein of TMV-Cg (CPCg),is the elicitor of the necrotic response in tobacco Xanthi-nn plants. Local and systemic necrotic lesions induced by TMV-Cg and by the hybrid U1-CPCg -that carries CPCg in a TMV-U1 context- are characterized by cell death and by the presence of autoflorescent phenolic compounds and H2O2, just like the HR lesions. In addition, defense-related genes and detoxifying genes are induced in tobacco Xanthi-nn plants after TMV-Cg and U1-CPCg inoculation. We postulate that in our system, CPCg is recognized by sensitive tobacco plants that mount an incomplete defense response. We call this an HR-like since it is not enough to induce plant resistance.
dc.fuente.origenWOS
dc.identifier.eissn0219-1032
dc.identifier.issn1016-8478
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96238
dc.identifier.wosidWOS:000230342100016
dc.issue.numero3
dc.language.isoen
dc.pagina.final427
dc.pagina.inicio418
dc.revistaMolecules and cells
dc.rightsacceso restringido
dc.subjectsystemic hypersensitive reaction
dc.subject.ods13 Climate Action
dc.subject.ods02 Zero Hunger
dc.subject.odspa13 Acción por el clima
dc.subject.odspa02 Hambre cero
dc.title<i>Tobamovirus</i> coat protein CPCg induces an HR-like response in sensitive tobacco plants
dc.typeartículo
dc.volumen19
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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