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转录组和代谢组分析揭示了桃子根中纳米塑料诱导的氧化应激反应

Wenzhe Zhao¹, Qijie Wu¹, BinBin Wen¹

¹College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, China.

Plant physiology and biochemistry : PPB

|July 27, 2025

概括

聚烯纳米塑料 (PS-NPs) 通过引起氧化应激会损害桃子和Prunus davidiana根的生长. PS-NP 破坏抗氧化剂系统,强调需要了解纳米塑料对果树的影响.

科学领域:

环境科学环境科学
植物科学植物科学
毒理学毒理学毒理学

背景情况:

纳米塑料 (NP) 是普遍存在的环境污染物,对它们对果树的影响的研究有限.
现有的研究主要集中在藻类和粮食作物上,在了解多年生物种中的NP植物相互作用方面存在知识差距.

研究的目的:

研究聚乙烯纳米塑料 (PS-NP) 对桃子 ("青州"Prunus persica) 和Prunus davidiana Franch.的根系的影响.
阐明了水果树根中NP诱导的应激反应背后的分子和代谢机制.

主要方法:

桃子和P. davidiana根系暴露在PS-NPs (032 mg/L) 的不同度下.
根生长抑制和氧化应激标志物 (H2O2,O2) 的评估.
集成的转录组和代谢组测序来分析调节网络.

主要成果:

PS-NP被根部吸收,32 mg/L诱导显著的氧化应激 (H2O2,O2积累) 并抑制两种物种的根部延长.
转录组和代谢组分析显示PpCRTISO介导的氧化级联反应,上调PpNRT2.7.7.
PS-NPs改变了多巴胺和L-氨酸水平,破坏了非酶性抗氧化剂系统和ROS恒温.

结论:

通过破坏ROS恒温和抗氧化系统,PS-NP诱导氧化应激并抑制桃子和P. davidiana的根生长.
该研究确定了参与植物对纳米塑料压力的反应的关键分子参与者 (PpCRTISO,PpNRT2.7).
这些发现对于理解纳米塑料与果树的相互作用和减轻对农业的负面影响至关重要.

关键词:

氧化应激是一种氧化应激.这是PS-NPs.桃子是一种桃子.根系是根系中的根系.转录基因组和代谢基因组.

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