Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10870509 | FEBS Letters | 2014 | 8 Pages |
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.
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Agricultural and Biological Sciences
Plant Science
Authors
Natalia Maria Ordoñez, Claudius Marondedze, Ludivine Thomas, Stefania Pasqualini, Lana Shabala, Sergey Shabala, Chris Gehring,