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暴露在聚烯微塑料中调节了烟草叶中的多种代谢途径,影响了素生物合成

Muhammad Arshad¹, Yaowu Ma², Weichang Gao³

¹The sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Sanya, China; Soil Ecology Lab, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China.

Ecotoxicology and environmental safety

|March 5, 2025

概括

聚烯微塑料 (PP-MPs) 影响烟草植物,改变生长和积累代谢物. 更高的PP-MP度和更大的尺寸诱导了显著的生理和分子变化,影响了素合成.

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:

微塑料 (MP) 和纳米塑料 (NP) 构成环境风险,它们对植物生理学的影响越来越多地受到研究.
聚烯微塑料 (PP-MPs) 对烟草植物的具体影响尚不清楚,需要进一步调查.

研究的目的:

研究烟草植物暴露于PP-MPs的不同度和颗粒大小的物理化学,转录基因和代谢反应.
阐明烟草植物对PP-MP压力的反应背后的分子机制.

主要方法:

一个微观的实验暴露烟草幼苗PP-MPs (20纳米和100微米) 在100和1000毫克/公斤的48天.
分析植物的物理化学参数,代谢物积累和基因表达,使用转录和KEGG通路分析.

主要成果:

暴露于PP-MP对烟草生长产生了剂量依赖的影响,较高度导致更明显的反应.
观察到大量的烯和黄生物合成代谢物的积累.
转录组分析揭示了丰富的途径,包括烯胺生物合成,黄胺生物合成和植物激素信号转导,对与氨酸合成相关的基因有显著影响.

结论:

烟草植物对PP-MP暴露有显著的生理和分子反应,受度和颗粒大小的影响.
PP-MPs 破坏了代谢途径,特别是那些参与二次代谢产物和素合成的代谢途径.
这项研究提供了关于烟草植物和PP-MP之间的复杂相互作用的关键见解,突出了潜在的生态风险.

关键词:

氨酸生物合成氨酸生物合成代谢物积累的代谢物微塑料是一种微塑料.聚烯聚烯的使用方法烟草幼苗的种植时间转录组分析转录组分析

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