含甲基斯酸盐的奇托桑纳米颗粒和生物炭可以改善玉米的耐热性
Mona H Soliman1, Abdelghafar M Abu-Elsaoud2, Ayshah Aysh ALrashidi3
1Department of Biology, College of Science in Yanbu, Taibah University, Madinah, Kingdom of Saudi Arabia. monahsoliman03@gmail.com.
Scientific reports
|February 5, 2026
概括
结合甲基斯酸盐加载的奇托桑纳米粒子 (MJNPs) 和树衍生生物炭 (EBB),可显著提高玉米在热应激下的耐热性. 这种新的纳米生物炭策略增强了植物生理学,营养吸收和应激反应基因表达,以提高作物弹性.
科学领域:
- 植物科学 植物科学
- 农业科学 农业科学
- 纳米技术纳米技术
背景情况:
- 气候变化加剧了热应激,这是对玉米 (Zea mays L.) 生产力的重大威胁.
- 制定提高作物耐热性的战略对于粮食安全至关重要.
研究的目的:
- 为了研究甲基斯酸盐加载的奇托桑纳米颗粒 (MJNPs) 和树衍生生物炭 (EBB) 对玉米耐热性的协同作用.
- 评估这种联合治疗在热应激下对生理,生化,营养吸收,产量和基因表达的影响.
主要方法:
- 通过离子凝合成MJNP,并使用SEM,TEM和FTIR进行表征.
- 在一个温室实验中,对玉米进行了受控的热应力 (40°C),进行了8次处理,包括MJNPs + EBB (HEMN).
- 分析了生理参数,营养含量,产量和应激反应和生长相关基因的基因表达.
主要成果:
- 仅热应力就减少了植物的高度,光合作用率 (PN),相对含水量 (RWC) 和产量组件.
- 结合MJNP + EBB处理 (HEMN) 显著减轻热应激损伤,增加植物高度,RWC,膜稳定性指数 (MSI) 和PN.
- HEMN改善了谷物数量,种子重量,用水效率 (WUE),以及,和铁的吸收.
- 基因表达分析显示,热冲击蛋白 (HSP70),脱水素 (DHN3),晚期胚胎生成丰富蛋白 (LEA-1),auxin生物合成基因和HEMN处理植物中的水素蛋白的调节.
结论:
- 通过改善生理功能和激活分子防御机制,MJNP和生物炭的协同应用有效地提高了玉米的耐热性.
- 这种综合纳米生物炭方法提供了一个可扩展和可持续的解决方案,用于减轻农业中气候引起的热压力.
- 该研究强调了结合纳米技术和生物炭的潜力,以提高作物在不断变化的环境条件下的弹性.
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