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Genome-wide maps of chromatin state in Col-0, jmj28 mutant, and atx1/2 mutant [Histone ChIP-seq]

ABSTRACT: ChIP-seq was performed to detect two different histone modifications in WT, jmj28-2, and atx1/2.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE188134 | GEO | 2023/02/22

REPOSITORIES: GEO

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Involvement of the Chromatin Modifier ATX1 and of the Arabidopsis Myotubularin Homolog (MYO1) in the Response to Drought

Project description:Plants respond to environmental stresses by altering transcription of genes involved in the response. The chromatin modifier ATX1 influences gene expression and factors that modulate ATX1 activity would affect indirectly the expression of ATX1-regulated genes. Here, we demonstrate that dehydration is such a factor indicating that ATX1 is involved in the plantâs response to drought. In addition, we show that a hitherto unknown Arabidopsis gene, At3g10550, encodes MYO1, a phosphoinositide 3â-phosphatase related to the animal myotubularins. By a functional genomics approach, we show that ATX1 and MYO1 participate in overlapping drought-response pathways. The shared set of genes, representing the ultimate targets of an ATX1-MYO1 signaling mechanism responding to drought, provided insights into the relationship of the epigenetic factor and the lipid phosphatase from the other end of the response pathway. Keywords: control/treatment Arabidopsis thaliana Col0 wild type, atx1 mutant, and MYO-OX line RNA was isolated from control (watered) and treatment (water-deficit) samples for analysis on microarrays with two biological reps.

2010-05-07 | E-GEOD-15577 | biostudies-arrayexpress

Involvement of the Chromatin Modifier ATX1 and of the Arabidopsis Myotubularin Homolog (MYO1) in the Response to Drought

Project description:Plants respond to environmental stresses by altering transcription of genes involved in the response. The chromatin modifier ATX1 influences gene expression and factors that modulate ATX1 activity would affect indirectly the expression of ATX1-regulated genes. Here, we demonstrate that dehydration is such a factor indicating that ATX1 is involved in the plant’s response to drought. In addition, we show that a hitherto unknown Arabidopsis gene, At3g10550, encodes MYO1, a phosphoinositide 3’-phosphatase related to the animal myotubularins. By a functional genomics approach, we show that ATX1 and MYO1 participate in overlapping drought-response pathways. The shared set of genes, representing the ultimate targets of an ATX1-MYO1 signaling mechanism responding to drought, provided insights into the relationship of the epigenetic factor and the lipid phosphatase from the other end of the response pathway. Keywords: control/treatment

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