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Microarrays expression of Arabidopsis thaliana roots treated by ABA (1µM for 3H) in Col0 control and snrk2.4 knock-out against non treated roots

ABSTRACT: SnRK2 have been identified as componant in plant hormonal and environmental stress signaling.. Although responsive to both ABA and osmotic stress, SnRK2s from class III were proposed to act as the main regulators of ABA signaling whereas class I would be exclusively responsive to osmotic stress. Strikingly, knock-out mutations of all class III SnRK2s induce dramatic phenotypes showing little or no responses to high ABA concentrations during seed germination, root growth, and stomatal movement. On the other hand, class I SnRK2s (SnRK2.1, 2.4, 2.5, 2.9, 2.10) have been generally considered as ABA-unresponsive and rather responding to salinity and osmotic stress. Yet, heterologous expression studies in yeast aiming to test the functionality of a variety of core ABA signaling components, indicated that SnRK2.4 may be involved in ABA-dependent signaling. In support for this, a recent study revealed the role of SnRK2.4 in ABA-dependent down regulations of root aquaporins activity and consequent reduction of water transport to aerial parts . The present study addresses the responses of SnRK2.4 to ABA with regard to root development and membrane cellular functions. For this, we developed an integrated transcriptomic, proteomic and phosphoproteomic study of two snrk2.4 knock-out mutants, treated by 1µM ABA for 3H.

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Colette Tournaire Roux

PROVIDER: E-MTAB-15518 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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