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    The Arabidopsis thaliana cysteine-rich receptor-like kinase CRK20 modulates host responses to Pseudomonas syringae pv. tomato DC3000 infection

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    Type
    Article
    Authors
    Ederli, Luisa
    Madeo, Laura
    Calderini, Ornella
    Gehring, Christoph A cc
    Moretti, Chiaraluce
    Buonaurio, Roberto
    Paolocci, Francesco
    Pasqualini, Stefania
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Bioscience Program
    Molecular Signalling Group
    Date
    2011-10
    Permanent link to this record
    http://hdl.handle.net/10754/561886
    
    Metadata
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    Abstract
    In plants, the cysteine-rich repeat kinases (CRKs) are a sub-family of receptor-like protein kinases that contain the DUF26 motif in their extracellular domains. It has been shown that in Arabidopsis thaliana, CRK20 is transcriptionally induced by pathogens, salicylic acid and ozone (O3). However, its role in responses to biotic and abiotic stress remains to be elucidated. To determine the function of CRK20 in such responses, two CRK20 loss-of-function mutants, crk20-1 and crk20-2, were isolated from public collections of Arabidopsis T-DNA tagged lines and examined for responses to O3 and Pseudomonas syringae pv. tomato (Pst) DC3000. crk20-1 and crk20-2 showed similar O3 sensitivities and no differences in the expression of defense genes when compared with the wild-type. However, pathogen growth was significantly reduced, while there were no differences in the induction of salicylic acid related defense genes or salicylic acid accumulation. Furthermore, correlation analysis of CRK20 gene expression suggests that it has a role in the control of H2O and/or nutrient transport. We therefore propose that CRK20 promotes conditions that are favorable for Pst DC3000 growth in Arabidopsis, possibly through the regulation of apoplastic homeostasis, and consequently, of the environment of this biotrophic pathogen. © 2011 Elsevier GmbH.
    Citation
    Ederli, L., Madeo, L., Calderini, O., Gehring, C., Moretti, C., Buonaurio, R., … Pasqualini, S. (2011). The Arabidopsis thaliana cysteine-rich receptor-like kinase CRK20 modulates host responses to Pseudomonas syringae pv. tomato DC3000 infection. Journal of Plant Physiology, 168(15), 1784–1794. doi:10.1016/j.jplph.2011.05.018
    Publisher
    Elsevier BV
    Journal
    Journal of Plant Physiology
    DOI
    10.1016/j.jplph.2011.05.018
    PubMed ID
    21742407
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.jplph.2011.05.018
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Bioscience Program

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