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논문 기본 정보

자료유형
학술저널
저자정보
Czajka Karolina (Laurentian University Canada) Mehes-Smith Melanie (Laurentian University Canada) Nkongolo Kabwe (Laurentian University Canada)
저널정보
한국유전학회 Genes & Genomics Genes & Genomics Vol.44 No.3
발행연도
2022.3
수록면
279 - 297 (19page)
DOI
10.1007/s13258-021-01191-z

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Background A review of research shows that methylation in plants is more complex and sophisticated than in microorganisms and animals. Overall, studies on the effects of abiotic stress on epigenetic modifications in plants are still scarce and limited to few species. Epigenetic regulation of plant responses to environmental stresses has not been elucidated. This study summarizes key effects of abiotic stressors on DNA methylation and histone modifications in plants. Discussion Plant DNA methylation and histone modifications in responses to abiotic stressors varied and depended on the type and level of stress, plant tissues, age, and species. A critical analysis of the literature available revealed that 44% of the epigenetic modifications induced by abiotic stressors in plants involved DNA hypomethylation, 40% DNA hypermethylation, and 16% histone modification. The epigenetic changes in plants might be underestimated since most authors used methods such as methylation-sensitive amplification polymorphism (MSAP), High performance liquid chromatography (HPLC), and immunolabeling that are less sensitive compared to bisulfite sequencing and single-base resolution methylome analyses. More over, mechanisms underlying epigenetic changes in plants have not yet been determined since most reports showed only the level or/and distribution of DNA methylation and histone modifications. Conclusions Various epigenetic mechanisms are involved in response to abiotic stressors, and several of them are still unknown. Integrated analysis of the changes in the genome by omic approaches should help to identify novel components underlying mechanisms involved in DNA methylation and histone modifications associated with plant response to environmental stressors.

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