Abstract
Plants employ DNA methylation to maintain genomic plasticity that allows rapid adaptation to environmental stresses without alteration nucleotide sequence of DNA. The present investigation was carried out to detect DNA methylation changes induced by drought stress in inbred line W22 by using amplified methylation-polymorphism technique. The maize inbred line W22 encountered extensive DNA methylation variations, including hypo- and hypermethylation as a response to drought stress. Differential methylation of many genes involved in plant response to drought stress such as Antagonist of Like Heterochromatin Protein1, peptide methionine sulfoxide reductase (MSRA4), 3-isopropylmalate dehydratase large subunit 2, adenylyl cyclase-associated protein, 3-hydroxyisobutyrate dehydrogenase gene, and others was observed.
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