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The Arabidopsis chromatin modifier ATX1, the myotubularin-like AtMTM and the response to drought.
- Source :
-
Plant signaling & behavior [Plant Signal Behav] 2009 Nov; Vol. 4 (11), pp. 1049-58. Date of Electronic Publication: 2009 Nov 15. - Publication Year :
- 2009
-
Abstract
- Plants respond to environmental stresses by altering transcription of genes involved in the response. The chromatin modifier ATX1 regulates expression of a large number of genes; consequently, factors that affect ATX1 activity would also influence expression from ATX1-regulated genes. Here, we demonstrate that dehydration is such a factor implicating ATX1 in the plant's response to drought. In addition, we report that a hitherto unknown Arabidopsis gene, At3g10550, encodes a phosphoinositide 3'-phosphatase related to the animal myotubularins (AtMTM1). Myotubularin activities in plants have not been described and herein, we identify an overlapping set of genes co-regulated by ATX1 and AtMTM under drought conditions. We propose that these shared genes represent the ultimate targets of partially overlapping branches of the pathways of the nuclear ATX1 and the cytoplasmic AtMTM1. Our analyses offer first genome-wide insights into the relationship of an epigenetic factor and a lipid phosphatase from the other end of a shared drought responding pathway in Arabidopsis.
- Subjects :
- Animals
Arabidopsis metabolism
Arabidopsis physiology
Arabidopsis Proteins metabolism
Cell Nucleus
Chromatin
Cytoplasm
Dehydration
Epigenesis, Genetic
Gene Expression
Genome, Plant
Histone-Lysine N-Methyltransferase
Mitochondrial Proteins
Phosphoric Monoester Hydrolases metabolism
Protein Tyrosine Phosphatases, Non-Receptor genetics
Protein Tyrosine Phosphatases, Non-Receptor metabolism
Transcription Factors metabolism
Adaptation, Physiological genetics
Arabidopsis genetics
Arabidopsis Proteins genetics
Droughts
Gene Expression Regulation, Plant
Genes, Plant
Phosphoric Monoester Hydrolases genetics
Transcription Factors genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1559-2324
- Volume :
- 4
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- Plant signaling & behavior
- Publication Type :
- Academic Journal
- Accession number :
- 19901554
- Full Text :
- https://doi.org/10.4161/psb.4.11.10103