麦的素诱导的DNA损伤反应及其对ATR的依赖
Jovanka Vladejić1,2, Martin Kovacik1,2, Jana Zwyrtková1
1Centre of Plant Structural and Functional Genomics, Institute of Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia.
Scientific reports
|February 7, 2024
概括
麦植物暴露在破坏DNA的物质中显示出改变的生长和基因表达. DNA损伤反应 (DDR) 途径,特别是ATR激酶,在这些植物反应中发挥着关键作用.
科学领域:
- 植物分子生物学 植物分子生物学
- 基因组学就是基因组学.
- 农作物科学 农作物科学
背景情况:
- 基因组稳定性对所有有机体至关重要,由DNA损伤反应 (DDR) 维持.
- 在植物中,DDR影响生长和产量,使其对农业至关重要.
- 大麦 (Hordeum vulgare) 是研究植物DDR.的关键温带作物模型.
研究的目的:
- 在表型,生理和转录层面研究大麦的DNA损伤反应 (DDR).
- 确定涉及大麦对DNA链断裂 (DNA-SBs) 反应的基因和途径.
- 为了阐明ATR激酶在大麦的DDR中的作用.
主要方法:
- 在体外DNA损伤测试中,使用热素诱导DNA链断裂 (DNA-SBs).
- 根生长和发育的表型分析,以响应热素.
- 野生类型和vtrg突变大麦的全基因组转录概况.
- 对421个大麦DDR基因和SOG1/SGL基因关系目录的分析.
主要成果:
- 素治疗减少了大麦的根生长,改变了大麦根尖的发展.
- 全基因组分析显示了依赖素,依赖ATR和依赖ATR的转录反应.
- 泽奥辛诱导了DDR因子的上调和细胞循环/基因组基因的下调,主要是独立于ATR.
- 对参与DNA复制和其他无关功能的基因观察到ATR依赖性.
结论:
- 这项研究提供了对大麦DNA链断裂 (DNA-SB) 反应的分子见解.
- 巴利的DDR涉及复杂的转录调节,具有ATR依赖和独立的途径.
- 了解大麦DDR对于改善面对基因压力的作物弹性和产量至关重要.
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