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Author
Higashi, Kuniaki
Ishiga, Yasuhiro
Abstract

Flagellin, a component of the flagellar filament of Pseudomonas syringae pv. tabaci 6605 (Pta), induces hypersensitive reaction in its non-host Arabidopsis thaliana. We identified the WRKY41 gene, which belongs to a multigene family encoding WRKY plant-specific transcription factors, as one of the flagellin-inducible genes in A. thaliana. Expression of WRKY41 is induced by inoculation with the incompatible pathogen P. syringae pv. tomato DC3000 (Pto) possessing AvrRpt2 and the non-host pathogens Pta within 6-h after inoculation, but not by inoculation with the compatible Pto. Expression of WRKY41 was also induced by inoculation of A. thaliana with an hrp-type three secretion system (T3SS)-defective mutant of Pto, indicating that effectors produced by T3SS in the Pto wild-type suppress the activation of WRKY41. Arabidopsis overexpressing WRKY41 showed enhanced resistance to the Pto wild-type but increased susceptibility to Erwinia carotovora EC1. WRKY41-overexpressing Arabidopsis constitutively expresses the PR5 gene, but suppresses the methyl jasmonate-induced PDF1.2 gene expression. These results demonstrate that WRKY41 may be a key regulator in the cross talk of salicylic acid and jasmonic acid pathways.

Keywords
flagellin
flg22
FLS2
MAMP signaling pathway
WRKY41
Note
Published with permission from the copyright holder.
This is published in Molecular Genetics and Genomics, 2008 Vol.279 Issue.3 pp.303-312
Publisher URL: http://dx.doi.org/10.1007/s00438-007-0315-0
Direct access to Thomson Web of Science record
(C)2007 by Springer.
Published Date
2008-03-01
Publication Title
Molecular Genetics and Genomics
Volume
volume279
Issue
issue3
Start Page
303
End Page
312
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
Refereed
True
DOI
Web of Sience KeyUT
Submission Path
biochemistry/16