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氧化纳米颗粒保护玉米免受压力:从转录组学和氧化应激反应分析的见解

Abdul Salam^1,2, Jiaxuan Qi¹, Xingming Fan³

¹Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China.

ACS applied materials & interfaces

|June 12, 2025

概括

氧化纳米颗粒 (CeO2NP) 作为纳米酶,通过减少金属吸收和增强植物防御机制,保护玉米免受毒性. 这项研究揭示了CeO2 NP对重金属应力作用的分子洞察力.

科学领域:

纳米材料科学科学纳米材料科学
植物生理学植物生理学
环境毒理学环境毒理学

背景情况:

纳米酶,来自纳米材料的人工酶,具有催化性能.
纳米酶在减轻重金属应力,特别是 (Co) 的作用及其机制尚不清楚.
的毒性显著影响植物的生长和发育.

研究的目的:

研究氧化纳米颗粒 (CeO2 NPs) 作为纳米酶在缓解玉米中引起的压力的有效性.
阐明CeO2NP介导的防治毒性背后的生理和分子机制.

主要方法:

玉米种子用CeO2NP (500毫克L-1) 进行了原料培养,并用300微米的 (Co) 应力进行了水培养.
评估了植物生长参数,营养含量,Co吸收,光合作用和抗氧化酶活动.
配合KEGG和GO分析的RNA测序 (RNA-Seq) 用于探索分子反应.

主要成果:

CeO2 NPs显著缓解了联合诱导的生长抑制,减少了玉米组织中的 Co 积累,并改善了营养含量.
用CeO2NP进行原始化可以提高光合作用效率和抗氧化酶活性,同时降低活性氧物种和脂质过氧化.
RNA-Seq分析揭示了与离子结合,金属运输,激素信号和代谢物生物合成相关的途径中的显著基因表达变化.

结论:

CeO2 NPs通过保持细胞完整性和增强植物防御系统,有效地减轻玉米中的毒性.
该研究提供了CeO2 NP作用的分子证据,突出了它们在调节金属稳态和代谢途径中的作用.
CeO2 NPs代表了一种有前途的基于纳米酶的策略,用于保护作物免受重金属诱导的毒性.

关键词:

在 RNA 序列中,RNA 序列氧化纳米颗粒的氧化.的压力压力是什么玉米玉米玉米是一种氧化应激是一种氧化应激.超结构的超结构.

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