乙烯反应因子ERF1A调节紫外线诱导的桃子水果延迟成熟的过程
Elpida Nasiopoulou1, Michail Michailidis1, Christina Skodra1
1Laboratory of Pomology, Department of Horticulture, Aristotle University of Thessaloniki, Thessaloniki-Thermi 57001, Greece.
Plant physiology
|September 22, 2025
概括
紫外线C (UV-C) 辐射通过调节乙烯信号来延迟桃子的成熟. 转录因子乙烯反应因子1A (ERF1A) 整合了UV-C反应,控制了水果的软化和新陈代谢.
科学领域:
- 植物科学 植物科学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 众所周知,紫外线C (UV-C) 辐射会延迟水果的成熟,但分子机制尚未完全理解.
- 了解水果对紫外线的特定组织反应对于阐明成熟调节至关重要.
研究的目的:
- 研究特定组织的分子机制,UV-C辐射延迟了桃花的成熟.
- 确定参与UV-C反应的关键调节者及其在水果成熟中的作用.
主要方法:
- 对桃子皮和皮肉对UV-C辐射的反应进行分析.
- 基因表达分析,包括用于基因沉默的RNA干扰 (RNAi).
- 蛋白质组分析和转录因子结合部位的识别.
- 果实组织的荷尔蒙和代谢分析.
主要成果:
- 紫外线治疗延迟了成熟,减少了软化和促进着色,同时矛盾地增加了乙烯的生产.
- 乙烯反应因子1A (ERF1A) 在皮皮中被强烈诱导,并被确定为UV-C诱导的成熟延迟的关键调节者.
- 沉默ERF1A改变了乙烯生产,细胞壁组件,植物激素水平,以及糖,和挥发物的生物合成.
- 广泛的蛋白质组重编程和识别潜在的ERF1A点基因,涉及到成熟途径.
结论:
- ERF1A作为一个中央调节器,调解紫外线引起的桃子成熟延迟.
- 紫外线通过ERF1A影响乙烯信号,植物激素平衡和代谢途径.
- 这项研究提供了UV-C,ERF1A和水果成熟过程之间的复杂相互作用的见解.
相关概念视频
The Unfolded Protein Response
6.3K
The ER is the hub of protein synthesis in a cell. It has robust systems to quality control protein folding and also for degradation of terminally misfolded proteins. Under normal conditions, a small proportion of misfolded proteins that cannot be salvaged need to be transported to the cytoplasm by the ER-associated degradation or ERAD pathways. However, if the ERAD cannot handle the misfolded proteins, the cell activates the unfolded protein response or UPR to adjust the protein folding...
6.3K
Regulation of the Unfolded Protein Response
2.9K
Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
2.9K
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
28.3K
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.
28.3K
Nucleotide Excision Repair
5.0K
DNA Distortion and Damage
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...
5.0K
Nucleotide Excision Repair
40.6K
Overview
40.6K


