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- Title
Exogenous thermospermine has an activity to induce a subset of the defense genes and restrict cucumber mosaic virus multiplication in Arabidopsis thaliana.
- Authors
Sagor, G.; Takahashi, Hideki; Niitsu, Masaru; Takahashi, Yoshihiro; Berberich, Thomas; Kusano, Tomonobu
- Abstract
We previously proposed the defensive role of a signal pathway triggered by the polyamine spermine (Spm) in the reaction against avirulent viral pathogens in Nicotiana tabacum and Arabidopsis thaliana. In this study, we showed that thermospermine (T-Spm), an isomer of Spm, is also active in inducing the expression of the genes involved in the Spm-signal pathway at a similar dose as Spm. Furthermore, we found that T-Spm enhances the expression of a subset of pathogenesis-related genes whose expression is induced during cucumber mosaic virus (CMV)-triggered hypersensitive response. In consistent with the above observation, we further showed that exogenous T-Spm can repress CMV multiplication with same efficiency as Spm. Key message: Polyamine thermospermine, an isomer of spermine, is able to induce a subset of hypersensitive response-related defense genes and can suppress cucumber mosaic virus multiplication in Arabidopsis thaliana.
- Subjects
PLANT defenses; POLYAMINES; ARABIDOPSIS thaliana; GENE expression in plants; PLANT genes; PLANT viruses
- Publication
Plant Cell Reports, 2012, Vol 31, Issue 7, p1227
- ISSN
0721-7714
- Publication type
Article
- DOI
10.1007/s00299-012-1243-y