氧化纳米颗粒诱导细胞壁的修饰,根的解剖学变化,和的信号在Ni的生态型的过度积累器Odontarrhenalesbiacaca
Selahattin Kondak1, Patrick Janovszky2, Réka Szőllősi3
1Department of Plant Biology, University of Szeged, Közép fasor 52., 6726, Szeged, Hungary; Doctoral School of Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., 6726, Szeged, Hungary.
Environmental pollution (Barking, Essex : 1987)
|November 10, 2023
概括
氧化纳米颗粒 (NiO NPs) 在Odontarrhena lesbiaca生态型中显示植物耐受性. 植物表现出细胞和组织防御,NiO NPs影响活性物种和蛋白质修饰.
科学领域:
- 环境科学 环境科学
- 植物生物学 植物生物学
- 纳米技术纳米技术
背景情况:
- 氧化物纳米颗粒 (NiO NPs) 的工业使用正在增加,但它们在植物中的相互作用仍然不清楚.
- 了解NiO NP对植物的影响对于环境风险评估至关重要.
研究的目的:
- 为了研究 Ni 过度积累器 Odontarrhena lesbiaca 生态型对 NiO NPs 的细胞,组织,器官和分子反应.
- 将NiO NP效应与散装进行比较,并评估植物防御机制.
主要方法:
- 三种Odontarrhenalesbiaca生态型暴露于高剂量的NiONP (250和500毫克/升).
- 分析Ni的积累,转位,根细胞壁防御,组织修饰 (皮层厚度,素-素,点沉积).
- 评估生物质参数,氧化和过氧化含量,S-氨酸氨基缩酶活性和蛋白质氨酸化.
主要成果:
- 与散装Ni.NP相比,NiONP显示出较轻微的根到芽转位.
- 根细胞壁阻止了NiO NP的内部化;观察到皮质厚度增加和素-素/pectin沉积.
- 与自由离子相比,NiONP对生物质的负面影响较小;对反应性物种和蛋白质修饰的影响取决于生态型.
结论:
- 奥登塔雷纳莱斯比亚卡的生态型表现出多个层面对NiONP的耐受性,采用防御机制.
- 尼奥NP会影响活性物种的新陈代谢和蛋白质的修饰,这表明S-酸氨酸还原酶的翻译后调节.
- 植物对 NiO NPs 的反应是复杂的和生态型特异的,突出了适应性策略.
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