DNA Methylation Under Stresses and Its Prospects in Plant Drought-resistant Breeding

doi:10.11924/j.issn.1000-6850.2012-1239

Abstract

Abstract: DNA methylation, as one of the most important epigenetic phenomena, can regulate the function of plant genome without changing the DNA sequence via the effect of various DNA methyltransferases. DNA methylation patterns are sensitive to various environmental stimuli, which can endow plants with heritable stress adaptation. And the trans-generation effects of DNA methylation might make its application in plant breeding possible. The paper summarized the genetical backgrounds of DNA methylation and gave a scenario of the origin and variation of DNA methylation in plants. And previous researches done about DNA methylation modification under various abiotic stresses were also elaborated in the paper. Future research might be focus on drought-resistant germplasm creation with methylationa/demethylation inhibitor, deciphering mechanism of drought resistance via DNA methylation and exploring of new DNA methylation bio-markers useful for plant breeding.

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