在Coffea的间接体质胚胎发生过程中,由2,4-二基酸诱导的胚胎异常和基因毒性
João Paulo de Morais Oliveira1, Alex Junior da Silva2, Mariana Neves Catrinck3
1Laboratório de Citogenética e Cultura de Tecidos Vegetais, Centro de Ciências Agrárias e Engenharias, Universidade Federal do Espírito Santo, Alegre, ES, 29.500-000, Brazil. joaopaulo.ueg@gmail.com.
Scientific reports
|June 15, 2023
概括
高度的2,4-二基酸 (2,4-D) 在咖啡植物再生过程中促进异常体胚胎 (ASE) 和表观遗传变化. 阿拉比卡咖啡 (C. arabica) 呈现出对2,4-D毒性的更强的耐受性,而不是二倍化C. canephora.
科学领域:
- 植物生物技术 植物生物技术
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 植物生理学 植物生理学
背景情况:
- 间接体质胚生成 (ISE) 对于植物的再生至关重要.
- 2,4-二基酸 (2,4-D) 诱导ISE,但可能导致发育异常.
研究的目的:
- 评估 2,4-D 对 Coffea arabica 和 C. canephora ISE 的毒性影响.
- 评估体质胚胎形态,DNA损伤和全球5甲基细胞素 (5-mC%) 水平.
主要方法:
- 叶子拓展植物是在不同度的2,4-D介质上培养的.
- 分析了体质胚胎的发育,形态,5-mC%水平和DNA损伤.
- 进行了阿拉伯咖啡和C. canephora之间的比较分析.
主要成果:
- 增加的2,4-D度导致了更响应的扩展物和正常和异常体胚胎 (ASE) 的更高再生率.
- 2,4-D度与全球5mC%和ASE的数量正相关.
- 所有的ASE都表现出DNA损伤和全球5-mC%的升高;C.阿拉比卡对2,4-D的耐受性比C. canephora.更强.
结论:
- 合成的2,4-D奥克辛在咖啡ISE过程中诱导了遗传毒性,植物毒性和表观遗传变化.
- 该研究强调了咖啡种对2,4-D毒性的不同耐受性.
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