Yin Ming, Wang Shanwen, Wang Yanfang, Wei Ronghua, Liang Yawei, Zuo Liying, Huo Mingyue, Huang Zekai, Lang Jie, Zhao Xiuqin, Zhang Fan, Xu Jianlong, Fu Binying, Li Zichao, Wang Wensheng
State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Zhong-Guan-Cun South Street 12#, Beijing 100081, China.
Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization (MOE), Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
Plants (Basel). 2024 Sep 26;13(19):2700. doi: 10.3390/plants13192700.
With the intensification of global climate change and the increasing complexity of agricultural environments, the improvement of rice stress tolerance is an important focus of current breeding research. This review summarizes the current knowledge on the impact of various abiotic stresses on rice and the associated epigenetic responses (DNA methylation). Abiotic stress factors, including high temperature, drought, cold, heavy metal pollution, and high salinity, have a negative impact on crop productivity. Epigenetic changes are key regulatory factors in plant stress responses, and DNA methylation is one of the earliest discovered and thoroughly studied mechanisms in these epigenetic regulatory mechanisms. The normal growth of rice is highly dependent on the environment, and changes in the environment can lead to rice sterility and severe yield loss. Changes in the regulation of the DNA methylation pathway are involved in rice's response to stress. Various DNA methylation-regulating protein complexes that function during rice development have been identified. Significant changes in DNA methylation occur in numerous stress-responsive genes, particularly those in the abscisic acid signaling pathway. These findings underscore the complex mechanisms of the abiotic stress response in rice. We propose the effective improvement of tolerance traits by regulating the epigenetic status of rice and emphasize the role of DNA methylation in abiotic stress tolerance, thereby addressing global climate change and ensuring food security.
随着全球气候变化的加剧和农业环境的日益复杂，提高水稻的胁迫耐受性是当前育种研究的重要重点。本综述总结了目前关于各种非生物胁迫对水稻的影响以及相关表观遗传反应（DNA甲基化）的知识。非生物胁迫因素，包括高温、干旱、寒冷、重金属污染和高盐度，对作物生产力有负面影响。表观遗传变化是植物胁迫反应中的关键调节因子，而DNA甲基化是这些表观遗传调节机制中最早发现并深入研究的机制之一。水稻的正常生长高度依赖于环境，环境变化会导致水稻不育和严重的产量损失。DNA甲基化途径调控的变化参与了水稻对胁迫的反应。已经鉴定出在水稻发育过程中起作用的各种DNA甲基化调节蛋白复合物。许多胁迫响应基因，特别是脱落酸信号通路中的基因，发生了显著的DNA甲基化变化。这些发现强调了水稻非生物胁迫反应的复杂机制。我们建议通过调节水稻的表观遗传状态有效改善耐受性性状，并强调DNA甲基化在非生物胁迫耐受性中的作用，从而应对全球气候变化并确保粮食安全。
