叶状纳米颗粒通过雅斯酸介导的代谢重编程诱导了对米中的的协调防御
Linfeng Li1,2,3, Min Chen1,2,3, Fenghua Zhai1,2,3
1Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
Journal of agricultural and food chemistry
|March 5, 2026
概括
叶状纳米粒子 (SiNPs) 通过激活石酸盐 (JA) 信号来减少大米中的谷物. 这种纳米技术通过改变植物防御和土壤微生物,提高了水产量和污染田地的安全性.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 纳米技术纳米技术
背景情况:
- (Cd) 污染对大米的安全和生产构成重大威胁.
- 叶状纳米粒子 (SiNPs) 显示出缓解Cd污染的潜力,但系统机制尚不清楚.
研究的目的:
- 阐明叶子SiNP减轻大米中Cd污染的系统机制.
- 为了研究石酸盐 (JA) 信号在SiNP介导的Cd减少中的作用.
主要方法:
- 在100mg/L的SiNPs应用在米植物上.
- 在植物组织中对Cd分离的分析.
- 对关键Cd载体基因 (例如OsHMA3,OsNramp1) 的基因表达分析.
- 根球的代谢和微生物社区分析.
主要成果:
- 叶子SiNPs减少了66.58%的谷物Cd,产量增加了38.14%.
- SiNPs激活了JA信号,增强了叶子半纤维素中的Cd分离,并调节了传送基因.
- 射出到根的信号诱导了根球的代谢重编程,并招募了有益的微生物,使生物可用Cd减少了17.02%.
结论:
- 叶子SiNPs激活了一个协调的JA介导的防御系统,用于米中的Cd缓解.
- SiNPs在植物中促进了Cd的封存,并改变了根系球的生物地质化学,降低了Cd的生物可用性.
- 这项研究为基于纳米技术的战略提供了一个新的框架,用于在Cd污染的环境中安全生产大米.
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