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TiO₂微粒在生菜 (Lactuca sativa L.) 种子和幼苗中的作用

Ana Kamila Medeiros Lima¹, Alexya Vitória Felix Carvalho¹, Sergimar Kennedy de Paiva Pinheiro¹

¹Biomaterials Laboratory, Department of Metallurgical Engineering and Materials and Postgraduate Program in Systematics, Use and Conservation of Biodiversity (PPGSis), Federal University of Ceará, Pici Campus, Fortaleza, CE, 60455-900, Brazil.

Bulletin of environmental contamination and toxicology

|June 15, 2023

概括

二氧化 (TiO2) 微粒对 Lactuca sativa L. 植物造成显著的细胞和解剖损伤,特别是在根部,影响了发芽和生长. 需要进一步的研究来了解纳米材料与生物系统的相互作用.

科学领域:

环境科学环境科学
植物生物学植物生物学
材料科学材料科学材料科学

背景情况:

颗粒大小减小技术,特别是二氧化 (TiO2),在产品配方中至关重要,包括防晒.
了解TiO2微粒对非人类生物系统的环境影响至关重要.
植物毒性评估对于评估人工纳米颗粒的生态风险至关重要.

研究的目的:

为了评估二氧化 (TiO2) 微粒对Lactuca sativa L. (生菜) 植物的植物毒性.
分析TiO2微粒对植物发芽,生长和体重的影响.
使用光学显微镜 (OM) 和扫描电子显微镜 (SEM) 调查细胞和解剖损伤.

主要方法:

在暴露于TiO2微粒的Lactuca sativa L.上进行了发芽,生长和体重分析测试.
光学显微镜 (OM) 用于观察植物器官 (根, hypocotyl, 叶) 的解剖损伤.
使用扫描电子显微镜 (SEM) 检查细胞和形态损伤,特别是在根部.

主要成果:

观察到显著的细胞和形态损伤,特别是在50毫克L-1TiO2度的Lactuca sativa L.的根部,由SEM证实.
通过SEM证明了解剖损伤,包括血管束的破坏和皮质细胞的不规则.
OM证实了根部,下垂体和叶子组织的解剖损伤.

结论:

二氧化 (TiO2) 微粒物具有植物毒性,对Lactuca sativa L.造成大量的细胞和解剖损伤.
该研究强调需要进一步研究纳米材料和生物系统之间的相互作用机制.
这些发现强调了评估TiO2微粒在农业和生态环境中的环境影响的重要性.

关键词:

显微镜的使用方法植物毒性植物毒性植物解剖学植物解剖学植物形态学植物形态学二氧化的二氧化是什么?

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