School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK.
Institut de Biologie de l'École Normale Supérieure (IBENS), École Normale Supérieure, CNRS, INSERM, Université PSL, Paris, 75005, France.
New Phytol. 2022 Oct;236(2):333-349. doi: 10.1111/nph.18424. Epub 2022 Sep 7.
The plant nucleus provides a major hub for environmental signal integration at the chromatin level. Multiple light signaling pathways operate and exchange information by regulating a large repertoire of gene targets that shape plant responses to a changing environment. In addition to the established role of transcription factors in triggering photoregulated changes in gene expression, there are eminent reports on the significance of chromatin regulators and nuclear scaffold dynamics in promoting light-induced plant responses. Here, we report and discuss recent advances in chromatin-regulatory mechanisms modulating plant architecture and development in response to light, including the molecular and physiological roles of key modifications such as DNA, RNA and histone methylation, and/or acetylation. The significance of the formation of biomolecular condensates of key light signaling components is discussed and potential applications to agricultural practices overviewed.
植物细胞核在染色质水平上为环境信号的整合提供了一个主要的中心。多个光信号通路通过调节大量基因靶点来运作和交换信息，这些基因靶点塑造了植物对不断变化的环境的反应。除了转录因子在触发光调控基因表达变化方面的既定作用外，还有大量关于染色质调节剂和核支架动力学在促进光诱导植物反应方面的重要性的报告。在这里，我们报告并讨论了近年来关于调节植物结构和发育以响应光的染色质调控机制的最新进展，包括关键修饰（如 DNA、RNA 和组蛋白甲基化和/或乙酰化）的分子和生理作用。讨论了关键光信号成分的生物分子凝聚体形成的意义，并概述了其在农业实践中的潜在应用。
