纳米塑料在单种和双种蔬菜中的吸收和转移
Eric Zytowski1,2, Mohanna Mollavali1, Susanne Baldermann1,3
1Leibniz Institute for Vegetable and Ornamental Crops (IGZ), Grossbeeren, Germany.
Plant, cell & environment
|September 9, 2024
概括
微型和纳米塑料 (MNP) 进入食用植物,从根部移动到芽部. 这项研究揭示了MNP改变了植物的新陈代谢,可能通过蔬菜消费对人类健康构成风险.
科学领域:
- 环境科学 环境科学
- 植物生物学 植物生物学
- 毒理学 毒理学 毒理学
背景情况:
- 塑料污染将微型和纳米塑料 (MNP) 释放到生态系统中.
- 对空气,土壤和水中MNP的研究广泛,但植物污染知识有限.
- 了解MNP在植物中的吸收和影响对于食品安全至关重要.
研究的目的:
- 研究普通蔬菜中MNP吸收,转移和代谢影响.
- 确定MNP表面修改是否影响植物进入和移动.
- 评估MNP污染的食用植物对人类健康的潜在风险.
主要方法:
- 帕克,西红,卜和暴露在光标记的聚乙烯 (PS) 和聚甲基酸 (MNP) (100-500nm).
- 同焦激光扫描显微镜 (CLSM) 可视化MNP在植物组织中的进入和转移.
- 对Pak Choi进行代谢分析,以确定MNP暴露引起的生物化学变化.
主要成果:
- 已证明MNP进入植物组织,无论大小 (100-500nm) 或表面修饰 (未经修饰,COOH,NH2).
- 证实了MNP从根部转移到芽部,并在细胞间空间积累.
- 在pak choi中发现了显著的代谢变化,包括化合物和植物激素衍生物的变化,表明应激反应.
结论:
- 植物很容易吸收和转移MNP,并以可食用部分积累.
- 暴露于MNP会诱导植物中与压力相关的代谢变化.
- 蔬菜中MNP的存在意味着通过饮食摄入对人类健康的潜在危害.
相关概念视频
Water and Mineral Acquisition
32.6K
Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
32.6K
Key Elements for Plant Nutrition
18.7K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.7K
Short-distance Transport of Resources
15.7K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
15.7K


