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Role of epigenetic modifications in the development of crops essential traits
Ya-Nan Wang1, Tao Xu2, Wan-Peng Wang1
1College of Life Sciences, Northeast Forestry University, Harbin 150040, China.
Abstract:
Epigenetic modification refers to the chemical modifications of chromosomal DNA and histones, mainly including DNA methylation, histone modifications and non-coding RNAs. Without altering the DNA sequence, these heritable modifications can affect gene expression profiles by changing the chromatin state and play an important role in regulating the growth and development of plants. When the specific epigenetic modifications are changed, crops can obtain excellent phenotypes and stronger environmental adaptability. Therefore, artificially changing the epigenetic modifications are expected to obtain high-quality germplasm resources more suitable for agricultural production. In this review, we summarize the main types of plant epigenetic modifications, highlight the research progresses of functional plant epigenetic modifications on the important traits and responses to environmental stress, and identify the main problems that need be solved in the application of epigenetics in crop improvement, thereby providing new insights for the functional epigenetic modifications on crop breeding and improvement.
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