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Accession IconGSE72674

Coordinate transcriptional activation of salicylic acid and trehalose synthesis, oxidative/ER stress and innate immunity pathways by inducible artificial microRNA silencing of the SNF4 activator subunit of Arabidopsis SnRK1

Organism Icon Arabidopsis thaliana
Sample Icon 12 Downloadable Samples
Technology Badge Icon Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)

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Description
Arabidopsis SnRK1 is structurally and functionally related to the yeast Snf1 and mammalian AMP-activated kinases, which are activated in response to carbon/glucose limitation and stress conditions causing an imbalance of energy homeostasis increasing the AMP/ATP ratio. Mutations of the SNF4 activating subunit of trimeric Arabidopsis SnRK1 complexes are not transmitted through the male meiosis. Silencing of SNF4 by a -estradiol-inducible artificial microRNA (amiR-SNF4) constructs was used to examine how inhibition of SnRK1 affects transcriptional regulation of different cellular pathways in dark and light grown seedlings. This study shows that amiR-SNF4 silencing of SnRK1 leads to coordinate transcriptional activation of salicylic acid and trehalose synthesis, oxidative/endoplasmic reticulum stress and pathogen defense responses by inducing simultaneous changes in numerous other essential hormonal and metabolic pathways in Arabidopsis.
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