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  Members of the Arabidopsis WRKY group III transcription factors are part of different plant defense signaling pathways

Kalde, M., Barth, M., Somssich, I. E., & Lippok, B. (2003). Members of the Arabidopsis WRKY group III transcription factors are part of different plant defense signaling pathways. Molecular Plant-Microbe Interactions, 16(4), 295-305.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-3CEB-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-3CEC-F
Genre: Journal Article

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 Creators:
Kalde, M.1, Author              
Barth, M.1, Author              
Somssich, I. E.1, Author              
Lippok, B.1, Author              
Affiliations:
1Dept. of Plant Microbe Interactions (Paul Schulze-Lefert), MPI for Plant Breeding Research, Max Planck Society, ou_1113572              

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Free keywords: ascomycete Blumeria graminis; nahG; oomycete; pad4; RPP2; RPP4
 Abstract: WRKY proteins are a large group of transcription factors restricted to the plant kingdom. In Arabidopsis thaliana, the gene family consists of 74 members. Here, we analyzed the expression of all 13 members of one main WRKY subgroup and found that the majority are responsive both to pathogen infection and to salicylic acid. Temporal expression studies during compatible, incompatible, and nonhost interactions and employing plant defense-signaling mutants allowed us to define four distinct WRKY subsets responding to different signaling queues along defense pathways. These subsets did not reflect phylogenetic relationships. Promoter studies of one member, AtWRKY54, using a reporter gene construct in transgenic Arabidopsis plants, revealed that regulatory regions mediating pathogen and SA inducibility are clearly separable. In an AtWRKY54 knockout line, resistance to Peronospora parasitica was not compromised, but the transient expression kinetics of several WRKY genes was affected, suggesting both the existence of functional redundancy and intense cross-talk between signaling networks.

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Language(s): eng - English
 Dates: 2003-04
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 42394
ISI: 000181728400004
 Degree: -

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Title: Molecular Plant-Microbe Interactions
  Alternative Title : Mol. Plant-Microbe Interact.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 16 (4) Sequence Number: - Start / End Page: 295 - 305 Identifier: ISSN: 0894-0282