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    Cyclic mononucleotides modulate potassium and calcium flux responses to H2O2 in Arabidopsis roots

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    Type
    Article
    Authors
    Ordoñez, Natalia Maria
    Marondedze, Claudius cc
    Thomas, Ludivine
    Pasqualini, Stefania
    Shabala, Lana
    Shabala, Sergey
    Gehring, Christoph A cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Bioscience Core Lab
    Bioscience Program
    Molecular Signalling Group
    Date
    2014-02-13
    Online Publication Date
    2014-02-13
    Print Publication Date
    2014-03-18
    Permanent link to this record
    http://hdl.handle.net/10754/552388
    
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    Abstract
    Cyclic mononucleotides are messengers in plant stress responses. Here we show that hydrogen peroxide (H2O2) induces rapid net K+-efflux and Ca2+-influx in Arabidopsis roots. Pre-treatment with either 10 μM cAMP or cGMP for 1 or 24 h does significantly reduce net K+-leakage and Ca2+-influx, and in the case of the K+-fluxes, the cell permeant cyclic mononucleotides are more effective. We also examined the effect of 10 μM of the cell permeant 8-Br-cGMP on the Arabidopsis microsomal proteome and noted a specific increase in proteins with a role in stress responses and ion transport, suggesting that cGMP is sufficient to directly and/or indirectly induce complex adaptive changes to cellular stresses induced by H2O2. © 2014 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
    Citation
    Cyclic mononucleotides modulate potassium and calcium flux responses to H2O2 in Arabidopsis roots 2014, 588 (6):1008 FEBS Letters
    Publisher
    Wiley
    Journal
    FEBS Letters
    DOI
    10.1016/j.febslet.2014.01.062
    PubMed ID
    24530500
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S0014579314001057
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.febslet.2014.01.062
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Bioscience Program; Bioscience Core Lab

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