Please use this identifier to cite or link to this item: https://doi.org/10.1094/MPMI-18-0428
Title: Salicylic acid-induced resistance to Cucumber mosaic virus in squash and Arabidopsis thaliana: Contrasting mechanisms of induction and antiviral action
Authors: Mayers, C.N.
Lee, K.-C. 
Moore, C.A.
Wong, S.-M. 
Carr, J.P.
Keywords: Phloem
Plasmodesmata
Systemic acquired resistance
Issue Date: May-2005
Citation: Mayers, C.N., Lee, K.-C., Moore, C.A., Wong, S.-M., Carr, J.P. (2005-05). Salicylic acid-induced resistance to Cucumber mosaic virus in squash and Arabidopsis thaliana: Contrasting mechanisms of induction and antiviral action. Molecular Plant-Microbe Interactions 18 (5) : 428-434. ScholarBank@NUS Repository. https://doi.org/10.1094/MPMI-18-0428
Abstract: Salicylic acid (SA)-induced resistance to Cucumber mosaic virus (CMV) in tobacco (Nicotiana tabacum) results from inhibition of systemic virus movement and is induced via a signal transduction pathway that also can be triggered by antimycin A, an inducer of the mitochondrial enzyme alternative oxidase (AOX). In Arabidopsis thaliana, inhibition of CMV systemic movement also is induced by SA and antimycin A. These results indicate that the mechanisms underlying induced resistance to CMV in tobacco and A. thaliana are very similar. In contrast to the situation in tobacco and A. thaliana, in squash (Cucurbita pepo), SA-induced resistance to CMV results from inhibited virus accumulation in directly inoculated tissue, most likely through inhibition of cell-to-cell movement. Furthermore, neither of the AOX inducers antimycin A or KCN induced resistance to CMV in squash. Additionally, AOX inhibitors that compromise SA-induced resistance to CMV in tobacco did not inhibit SA-induced resistance to the virus in squash. The results show that different host species may use significantly different approaches to resist infection by the same virus. These findings also imply that caution is required when attempting to apply findings on plant-virus interactions from model systems to a wider range of host species. © 2005 The American Phytopathological Society.
Source Title: Molecular Plant-Microbe Interactions
URI: http://scholarbank.nus.edu.sg/handle/10635/101620
ISSN: 08940282
DOI: 10.1094/MPMI-18-0428
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