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使用纳米二氧化进行种子原料处理有效地改善了Brassica napus中的毒性

Zaid Ulhassan¹, Su Yang², Di He¹

¹Institute of Crop Science, Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy Sensing, Zhejiang University, Hangzhou 310058, China.

Journal of hazardous materials

|June 26, 2023

概括

用二氧化纳米颗粒 (SiO2 NPs) 进行种子原料化,有效地减少了Brassica napus中的 (Cr) 积累和毒性. 这种方法增强了植物生长,营养吸收,在面临Cr污染的作物中增强了耐压力.

科学领域:

环境科学环境科学
植物科学植物科学
纳米技术纳米技术

背景情况:

(Cr) 毒性严重影响作物产量,需要采取减轻其植物积累的策略.
二氧化纳米颗粒 (SiO2NP) 显示出可持续农业和非生物应激抵抗的前景.
对于SiO2 NP种子原料化减轻Brassica napus中的Cr毒性的精确机制尚不清楚.

研究的目的:

调查SiO2NP种子原料化对Brassica napus幼苗Cr植物毒性的保护作用.
阐明SiO2NP减少Cr积累及其相关氧化应激的机制.

主要方法:

用SiO2NP (400毫克/升) 进行Brassica napus的种子原料化,然后暴露于Cr (200微米).
在植物组织中量化Cr,MDA,H2O2和O2•−的含量.
对营养获取,光合作用性能和基因表达 (抗氧化剂和防御相关基因) 的分析.
对亚细胞Cr分布和超结构完整性的评估.

主要成果:

SiO2 NPs显著降低了Cr,MDA,H2O2和O2•−在叶子和根中的积累.
观察到营养吸收增加,光合作用效率提高,植物生长更好.
发现了抗氧化剂和防御基因的升级,增加了谷氨 (GSH) 水平,改变了亚细胞Cr分布 (细胞壁比例增加).

结论:

用SiO2NP进行种子原料化,通过减少Cr吸收和氧化损伤,使Brassica napus对Cr压力产生耐受性.
SiO2NP增强了植物的防御机制,促进了有利的营养平衡.
这项研究提供了B. napus中种子原料SiO2NP对Cr排毒的第一个证据,突出了它们在Cr污染环境中的作物潜力.

关键词:

抗氧化剂防御系统抗氧化剂防御系统重金属的应力压力是重金属的应力压力.纳米技术纳米技术油作物油作物油作物氧化应激是一种氧化应激.

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