纳米载体的叶片吸收途径影响了活性剂的输送和植物生理反应
Hagay Kohay1, Jonas Wielinski1, Jana Reiser1
1Carnegie Mellon University, Civil & Environmental Engineering Pittsburgh PA USA glowry@andrew.cmu.edu.
概括
将层层的双氧化物 (LDH) 纳米粒子应用于上叶表面,可以比下面表面更有效地增强营养供应和植物生长. 这样可以优化农业应用中纳米粒子的吸收.
科学领域:
- 农业纳米技术的使用
- 植物生理学 植物生理学
- 材料科学 材料科学 材料科学
背景情况:
- 层层的双氧化物 (LDH) 纳米粒子为叶子提供农业化学品和营养物质的潜力.
- 了解纳米粒子吸收途径对于优化植物生长和产量至关重要.
- 叶子表面特征影响叶子应用物质的有效性.
研究的目的:
- 为了研究LDH纳米颗粒在番茄植物上的向 (上) 和向 (下) 叶子应用的影响.
- 为了确定叶子侧面如何影响纳米粒子吸收,营养物质 () 输送和光合作用反应.
- 阐明纳米粒子透的机制及其生理后果.
主要方法:
- 将LDH纳米颗粒 (37 ± 1.5 nm) 应用于番茄植物的亚轴和亚轴叶面.
- 量化纳米粒子透深度相对于皮层和与表皮细胞的同位化.
- 从叶子转移到根的 (Mg) 转移的测量.
- 评估叶子的二氧化碳同化率,口腔导电性和蒸发透气.
主要成果:
- 与轴应用相比,轴应用导致表皮细胞结处的皮层透和积累更大.
- 将LDH纳米颗粒应用于相轴侧导致了46%更高的Mg输送到根部,并增加了24%的叶子CO2吸收.
- 低轴应用,特别是完整的口腔,显示透率降低,并干扰了口腔功能,降低导电性和蒸发透气.
结论:
- 适轴叶面是LDH纳米颗粒吸收和营养递送的更有效途径,从而改善了植物生长.
- 纳米颗粒对门功能在轴侧的干扰限制了光合作用效率.
- 针对特定的叶面可以优化农业中纳米载体介导的叶子传递的有效性.
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