Summary.
Tobacco plants expressing the mammalian 2′5′oligoadenylate system (2-5A system) exhibit resistance to cucumber mosaic virus (CMV). Here, to characterize the molecular aspect of the resistance to CMV in 2-5A system-expressing tobaccos, the activation of defense-related genes and systemic acquired resistance (SAR) as the markers for the hypersensitive resistance (HR), were elucidated. Northern hybridization analysis indicated that the expression of four pathogenesis-related (PR) protein genes and five HR-related genes were induced in CMV-infected tobaccos expressing 2-5A system. Furthermore, the induction of SAR against Pseudomonas syringae pv. tabaci as second challenge, was observed on CMV-inoculated tobaccos expressing 2-5A system. These results suggested that the resistance to CMV in tobacco expressing 2-5A system is associated with the establishment of an HR-like response.
Article PDF
Avoid common mistakes on your manuscript.
Author information
Authors and Affiliations
Additional information
Received September 12, 2002; accepted November 20, 2002 Published online February 7, 2003
Rights and permissions
About this article
Cite this article
Honda, A., Takahashi, H., Toguri, T. et al. Activation of defense-related gene expression and systemic acquired resistance in cucumber mosaic virus-infected tobacco plants expressing the mammalian 2′5′oligoadenylate system. Arch Virol 148, 1017–1026 (2003). https://doi.org/10.1007/s00705-002-0959-3
Issue Date:
DOI: https://doi.org/10.1007/s00705-002-0959-3