Alterations of histone modifications on the stress-responsive genes during the process from dehydration to rehydration in Arabidopsis

Abstract

Modulation of histone N-tail modifications correlates with transcriptional activation and repression in eukaryotes. We reported that the histone H3 modifications clearly correlate with gene activation of the stress-inducible genes under drought stress conditions ¹⁾.
We have studied alterations of the histone modifications during the process from dehydration to rehydration. From the Arabidopsis tiling array data, we selected several gene regions with the characteristic expression pattern in the dehydration to rehydration process. Chromatin immunoprecipitation assay showed that the temporal changes in enrichment of several histone modifications occur on the drought-inducible gene regions during the process. We will discuss about the correlation between gene regulation and status of histone modifications in the dehydration to rehydration process.
¹⁾ Kim et al. (2008) Plant Cell Physiol.: 49: 1580-1588.