低酸离子度改善了硫黄的植物去除,并减轻了其植物毒性
Bo Zhao1, Jiali Wang2, Na Sun3
1School of Environmental Science and Engineering, Shandong Key Laboratory of Environmental Processes and Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China; Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ 07030, United States.
The Science of the total environment
|June 15, 2023
概括
低胺离子度增加了硫胺抗生素的吸收和小麦的降解,减少了植物毒性. 这表明一种新的基于植物的方法用于环境中的抗生素修复.
科学领域:
- 环境科学 环境科学
- 植物科学 植物科学
- 生物化学 生物化学
背景情况:
- 硫胺抗生素 (SAs) 是广泛存在的环境污染物.
- 了解SA植物毒性和去除对于风险评估至关重要.
- 化物离子 (Br-) 在SA命运和植物反应中的作用尚不清楚.
研究的目的:
- 调查不同化物离子度对硫黄 (SDZ) 植物毒性的影响,小麦的吸收和降解.
- 阐明酸离子对植物生理学和SDZ代谢产生影响的机制.
- 探索胺离子在植物性抗生素补救中的潜在应用.
主要方法:
- 在不同酸离子 (Br-) 度和硫黄 (SDZ) 暴露下种植小麦.
- 植物毒性评估和生理代谢分析.
- 小麦根的新陈代谢分析.
- 识别SDZ降解产品的标识.
主要成果:
- 低Br-度 (0.1,0.5毫米) 促进了小麦中的SDZ吸收和降解,降低了植物毒性.
- 鉴定出一种化SDZ产品 (SDZBr),它减弱了二叶酸盐合成的抑制作用.
- 离子减少了活性氧基 (ROS),减轻了氧化损伤,并刺激了酸的产生.
- 高Br-度 (1mM) 呈现有害影响.
结论:
- 低胺离子度可以增强硫胺抗生素如SDZ的植物性降解.
- 离子调节植物生理反应,减轻抗生素毒性.
- 这些发现表明,使用植物和酸离子对抗生素污染地区的环境修复有新的策略.
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