Activation of defense-related gene expression and systemic acquired resistance in cucumber mosaic virus-infected tobacco plants expressing the mammalian 2′5′oligoadenylate system

Activation of defense-related gene expression and systemic acquired resistance in cucumber mosaic... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Activation of defense-related gene expression and systemic acquired resistance in cucumber mosaic virus-infected tobacco plants expressing the mammalian 2′5′oligoadenylate system

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Publisher
Springer Journals
Copyright
Copyright © 2002 by Springer-Verlag/Wien
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-002-0959-3
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Archives of VirologySpringer Journals

Published: Apr 1, 2003

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