Plant genomic DNA methylation in response to stresses： Potential applications and challenges in plant breeding
By Hai Peng, Jing Zhang. 2009
160 citations recorded by the source corpus.
Abstract The plant genome can respond rapidly and dynamically to stress in a manner that overcomes the restrictions of a highly stable DNA sequence. Abiotic stresses such as chilling, planting density, rubbing, cutting, and successive rounds of subculture generally decrease the levels of DNA methylation. The opposite effect is seen for salt stress, and the effects of heavy-metal stress are species specific. Biotic stresses such as pathogenic infection can lead to two contrasting effects on the levels of methylation in plants: hypermethylation on the genome-wide level and hypomethylation of resistance-related genes. Both phenomena may contribute to the adaptation of plants to stress. Although heritable methylation patterns and phenotypic variations that arise in response to stress are of potential value for plant breeding, their exploitation presents great challenges.
Subfields: Plant Science
View Paper: https://www.semanticscholar.org/paper/97ce72db675dabb924ad47e676e7f1a10d73298e
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In Plant Science
Citations in the corpus
- Epigenetic correlates of plant phenotypic plasticity: DNA methylation differs between prickly and nonprickly leaves in heterophyllous Ilex aquifolium (Aquifoliaceae) trees (2013, background): “Genome-wide changes in DNA methylation in response to changes in the environment have been increasingly shown in recent years for plants (Chinnusamy & Zhu, 2009; Peng & Zhang, 2009).”
- Widespread dynamic DNA methylation in response to biotic stress (2012, background): “Although published work indicates that DNA methylation is capable of being altered upon stress exposure, these studies are limited by low-resolution, nonquantitative, or noncomprehensive approaches (1).”