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聚乙烯微塑料对玉米 (Zea mays L.) 中铜的生物可用性,吸收和毒性的缓解潜力

Muhammad Saad Bashir¹, Umair Saeed², Jawad Aslam Khan¹

¹Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.

Environmental pollution (Barking, Essex : 1987)

|June 7, 2024

概括

聚乙烯微塑料 (PSMP) 可以固定土壤中的铜,减少对玉米植物的毒性. 较高的PSMP度显示在减轻铜的效果更大.

科学领域:

环境科学环境科学
土壤科学土壤科学
植物科学植物科学

背景情况:

耕地中的铜 (Cu) 污染对土壤健康和作物生产率构成风险.
聚乙烯微塑料 (PSMP) 是新兴的土壤污染物,与重金属和微量营养素的相互作用尚不清楚.
关于PSMP对农业土壤中微量营养素生物可用性和重金属毒性影响的研究有限.

研究的目的:

研究PSMPs在土壤中铜的生物可用性上的固定潜力.
评估PSMP对玉米 (Zea mays L.) 铜毒性和微量营养素状况的影响.
评估PSMPs在减轻玉米在铜污染条件下的氧化应激中的作用.

主要方法:

进行了一项盆栽实验,使用玉米暴露在不同度的铜和PSMP剂量 (150-250微米) 中.
用原子吸收光谱测量分析了土壤和植物组织的基本微量营养素 (Zn,Cu,Mn,Fe).
测量了马隆迪甲水平和抗氧化酶活性,以评估氧化应激.

主要成果:

PSMPs显著降低了收获后土壤中的铜度,较高剂量显示出更大的降低.
与仅使用铜相比,在联合铜和PSMP暴露下,玉米的生长有所改善.
PSMPs降低了甲水平,这表明暴露于铜的玉米植物中氧化应激减少.

结论:

聚乙烯微塑料显示出在土壤中固定铜的潜力,从而减轻玉米中的铜毒性.
在减少铜毒性和氧化应激方面,PSMPs的有效性取决于剂量,较高度更具影响力.
在自然条件下对各种PSMP颗粒大小进行进一步研究是必要的,以了解品种特定的差异和更广泛的生态影响.

关键词:

抗氧化剂是一种抗氧化剂.叶绿素是什么意思叶绿素是什么意思农作物农作物农作物氧化应激是一种氧化应激.转移转移转移转移转移

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