氨酸脱乙烯化:一种新兴的植物光信号的分子开关
Minghui Xing1, Kai Cheng2, Xuejie Zhao3
1Key Laboratory of Soybean Molecular Design Breeding, State Key Laboratory of Black Soils Conservation and Utilization, Jilin Da'an Agro-Ecosystem National Observation and Research Station, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China.
Physiologia plantarum
|December 11, 2025
概括
基因组脱甲基酶 (HDACs) 通过脱甲基化基因组和光受体来调节植物的光反应. 这种双重作用确保了精确的光信号和适应性增长的阿拉比多普西斯塔利亚纳.
科学领域:
- 植物分子生物学 植物分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 摄影生物学 摄影生物学
背景情况:
- lysine 乙化,由基因素脱乙酶 (HDACs) 和基因素乙转移酶 (HATs) 调节,影响染色体和翻译后调节.
- 在植物中,HDACs通过调节基因表达和光受体活性来影响光信号传递.
- 最近的研究强调了由HDACs作为关键的调节机制的非歇斯顿脱乙烯化.
研究的目的:
- 审查由HDACs在植物光信号传递中对基因素和非基因素脱乙的综合作用.
- 阐明协调转录重编程与光受体调节的调节网络.
- 突出HDACs在光形生成和光otropism中的重要性.
主要方法:
- 对HDACs,HATs和植物光信号研究的文献综述.
- 对对光敏感基因表达中的基因脱乙化研究的分析.
- 通过特定的HDACs (HDT2,HDA9) 检查光受体 (phyA,phot1) 的非希斯脱乙烯化证据.
主要成果:
- HDACs由HY5和PIFs招募,通过基因素脱乙烯化来调节对光敏感基因.
- HDACs HDT2 和 HDA9 直接去乙摄影受体 phyA 和 phot1,分别.
- 非希斯脱乙基化调节光受体的稳定性和活性,影响光信号通路.
结论:
- HDACs通过基因组和非基因组脱甲基化,在植物光形生成和光化中发挥着至关重要的作用.
- 一个多层的调节网络将这些脱乙基化事件集成在一起,以获得精确和可适应的植物光反应.
- 通过HDACs去乙非素代表了植物信号传递中新兴的调节开关.
相关概念视频
Cell Signaling in Plants
6.1K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
6.1K
Photoreceptors and Plant Responses to Light
28.2K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
28.2K
Biological Clocks and Seasonal Responses
41.4K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
41.4K
Covalently Linked Protein Regulators
8.6K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
These groups modify specific amino acids in a protein....
8.6K
Histone Modification
15.8K
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
15.8K
Short-distance Transport of Resources
17.4K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
17.4K


