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"风险共享"机制可以帮助克隆水生植物减轻纳米塑料的压力吗?

Hongwei Yu^1,2, Huawei Jia^1,2, Nan Shen³

¹State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.

Environmental science & technology

|February 2, 2024

概括

纳米塑料 (NP) 损害了像水这样的克隆水生植物,减少了生长和破坏光合作用. 虽然母植物将NP转移给后代,但它们的相互联系提供了一些压力保护,突出了补救潜力,但也存在风险.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
植物生理学植物生理学

背景情况:

克隆水生植物对于生态恢复至关重要.
克隆集成是面临环境压力的植物的关键策略.
纳米塑料 (NP) 对克隆水生植物生长的影响尚不清楚.

研究的目的:

为了研究不同纳米塑料度对母植物和Eichhornia crassipes (水) 的连接后代子的影响.
了解纳米塑料在克隆系统中的积累和转移.
评估对纳米塑料暴露的生理和生化反应.

主要方法:

剂量反应实验使用100nm聚烯纳米塑料在0.1的度,1和10毫克L-1超过28天.
痕迹分析以追踪纳米塑料从父母到后代的运动,通过 stolons.
纳米塑料积累的量化,生物质测量,光合作用色素分析和抗氧化酶活性测试.

主要成果:

纳米塑料被母水积累,并转移到后代.
对纳米塑料的暴露显著减少了叶子和根的生物量 (分别为24%-51%和32%-51%),并降低了光合作用效率 (叶绿素含量,非光化学火).
氧化应激是由纳米塑料暴露造成的,损害了植物器官,影响了根部活动和水净化能力. 然而,与单个工厂相比,相互连接的ramets显示出较高的相对增长率.

结论:

*Eichhornia crassipes* 具有高纳米塑料丰富能力,这表明有生态修复的潜力.
纳米塑料污染造成的环境风险是由于克隆系统内的转移,需要移除受污染的个体.
克隆植物的风险扩散策略提供了对纳米塑料压力的某种弹性,但并不能消除整体负面影响.

关键词:

在NP的定量分析中.克隆的整合.生态修复的生态修复压力反应应激反应

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