在根球土壤中纳米塑料和酸盐诱导的应激反应:微生物群落和代谢网络
Xingfan Li1, Xinyi Du2, Davey L Jones3
1College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; School of Environmental and Natural Sciences, Bangor University, Bangor LL57 2UW, UK.
Journal of hazardous materials
|February 15, 2025
概括
塑料纳米颗粒和二乙酸盐有害于土壤健康和药用植物. 这些污染物破坏了微生物群落,改变了土壤代谢物,最终抑制了英的生长.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 农业科学 农业科学
背景情况:
- 农业中的塑料产品将微纳米塑料 (MNP) 和双甲酸盐 (DBP) 引入土壤.
- 这些污染物破坏土壤微生物群落并改变代谢物概况.
- 药用植物 (如 dandelion) 对根球的具体影响尚不清楚.
研究的目的:
- 调查聚乙烯 (PS) NPs和DBP对树根球微生物群落和 dandelion 的代谢物的影响.
- 为了确定与PS NP和DBP暴露相关的潜在降解细菌和生物标志物.
- 了解微生物反应,代谢物变化和在污染物压力下植物生长之间的关系.
主要方法:
- 高通量测序用于分析树根球微生物群落 (细菌和真菌).
- 使用液体染色体质谱法 (LC-MS) 来分析土壤代谢物.
- 花植物被暴露在不同度的PSNP和DBP中,单独和组合.
主要成果:
- 暴露于PS NPs和DBP降低了土壤pH值,有机物和酶活动.
- 微生物社区结构,多样性和网络稳定性发生了重大变化,细菌网络变得更加复杂,真菌网络变得更加简单.
- 同时暴露增加了与铁代谢和类固醇生物合成相关的代谢物,表明微生物应激反应,但未能阻止38.66%的英生长抑制.
结论:
- 土壤真菌和代谢特征在应对环境压力和影响植物健康方面发挥着至关重要的作用.
- PSNP和DBP的联合作用对土壤生态系统和药用植物种植有害.
- 了解这些相互作用对于管理被塑料衍生污染物污染的农业土壤至关重要.
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