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农作物植物对聚烯微塑料的物种相关反应

Laura J Zantis¹, Annebelle Rombach¹, Sylwia Adamczyk²

¹Institute of Environmental Sciences, Leiden University, P.O. Box 9518, 2300, RA Leiden, the Netherlands.

Environmental pollution (Barking, Essex : 1987)

|July 23, 2023

概括

聚乙烯微塑料 (PS-MPs) 对作物植物的影响不同,在发芽和生长过程中影响沙拉和胡卜等二叶植物. 像大麦和小麦这样的单种植物没有显示出直接的生长效应,但对PS-MPs表现出压力反应.

科学领域:

环境科学环境科学
植物生物学植物生物学
生态毒理学生态毒理学

背景情况:

微塑料污染是一个越来越令人担忧的问题.
陆地作物植物越来越多地暴露在微塑料中.
了解微塑料对各种作物物种的影响至关重要.

研究的目的:

为了比较聚乙烯微塑料 (PS-MPs) 对两个单种 (大麦,小麦) 和两个双种 (胡卜,生菜) 植物物种的影响.
调查对种子发芽,早期发育和慢性水培生长的影响.
为了评估物种对不同PS-MP度的特定反应.

主要方法:

进行了两项实验:急性种子暴露和慢性水培培养.
聚烯微塑料 (500nm) 用于10^3,10^5和10^7颗粒/毫升的度.
对芽,芽生长,生物质和压力指标的影响在大麦,小麦,胡卜和生菜中进行了测量.

主要成果:

微塑料显著影响了双角植物:拖延了菜发芽,促进了胡卜芽生长,减少了胡卜生物质.
长期暴露减少了生菜芽的生长,增加了其生物量;小麦没有显示直接的生长效应.
在生菜和小麦苗木中,压力指标和防御机制都得到了上调,这表明了压力反应.

结论:

聚烯微塑料对陆地植物具有物种依赖的影响.
双角植物更容易受到微塑料对发芽和生长的影响.
进一步的研究应侧重于作物特异性影响和微塑料暴露的环境相关条件.

关键词:

农业农业农业农业压力的生物化学指标微塑料是一种微塑料.植物生长植物生长种子的发芽种子的发芽

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