克拉特林介导的内细胞分裂控制了CdS纳米颗粒在米 (Oryza sativa L.) 根中的内化
Xinxing Nie1, Yili Luo2, Langlang Li3
1Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Institute of Plant Protection and Soil Science, Hubei Academy of Agricultural Sciences, Wuhan 430064, China.
Journal of hazardous materials
|November 26, 2025
概括
硫化纳米颗粒可以通过根毛通过克拉斯林介导的内细胞分解进入大米根. 这一途径揭示了这些纳米颗粒在米种植中的新生态风险.
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:
- 硫化 (CdS) 的降水限制了大米中 (Cd) 的吸收.
- 在大米根中CdS纳米粒子 (NP) 吸收和内部化的机制尚不清楚.
研究的目的:
- 研究米根中的CdS NP内部化机制.
- 确定CdS NP吸收的主要途径.
- 确定大米中CdS NP的主要进入点.
主要方法:
- 传输电子显微镜 (TEM) 用于可视化NP内部化.
- 药理抑制剂用于探测内细胞突变途径.
- 基因淘汰 (OsCLC2) 来评估克拉林介导的内细胞分裂 (CME).
- 使用FM4-64的共聚焦显微镜来研究根毛发的吸收.
主要成果:
- CdS NPs被内化到大米根细胞细胞质中.
- 克拉特林介导的内细胞分裂 (CME) 被确定为主要的内化途径.
- 淘汰OsCLC2显著降低了根中的CdS NP积累.
- 根毛被证实是CdS NP的主要进入点.
结论:
- 在大米根毛中,克拉特林介导的内细胞分解促进了CdS NP的内部化.
- 这种吸收机制对大米中的CdS NP具有低估的生态风险.
- 提供了关于植物纳米粒子吸收的机制性见解.
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