生物灵感的普鲁士蓝色纳米杀虫剂具有三重刺激响应门,用于生态适应性害虫控制
Guopeng Teng1, Biao Hong2, Xueqi Ma1
1School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, Anhui, China; Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China.
概括
研究人员开发了一种基于黄蜂的新型纳米杀虫剂 (PAPP). 这种智能农业化学品提供双相害虫控制,根据环境触发剂迅速或逐渐释放杀虫剂, 以有效和可持续的作物保护.
科学领域:
- 材料科学
- 农业科学
- 纳米技术
背景情况:
- 害虫管理面临越来越复杂和不可预测的疫情的挑战.
- 现有的农业化学品缺乏与生态节奏的动态适应.
- 寄生虫为生物控制提供了一个模型:即时麻和持续抑制.
研究的目的:
- 设计基于普鲁士蓝色 (PB) 的纳米杀虫剂 (PAPP),具有时空脱释放模式.
- 实现模仿黄蜂生物控制策略的双模式害虫管理.
- 通过先进的材料设计提高农业化学性能.
主要方法:
- 响应pH的PB芯与热敏的聚N-异烯胺 (PNIPAM) 纳米水凝门的集成.
- 使用性触发器进行快速分解和温度/NIR进行编程释放.
- 使用物理化学表征和分子动力学模拟进行验证.
主要成果:
- 在急性感染中实现性触发突发释放 (91.1%的甲酸排放).
- 证明温度/NIR编程持续释放用于季节性维护.
- PAPP显示了高药载荷 (82 mg/ g),改善紫外线抵抗 (67. 7%) 和叶子粘附 (330%).
- 验证的Plutella xylostella死亡率为81.7%,对非目标生物和作物的影响最小.
结论:
- 通过害虫行为驱动的材料编程建立了生态精准农业的范式.
- PAPP提供一种双模式的适应性虫害管理解决方案.
- 降解PB为作物提供必要的铁微量营养素.
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