2023-09-21 カリフォルニア大学サンディエゴ校(UCSD)
◆従来の農薬は表層に残るため、多くの農薬と水を使用する必要がありましたが、この新技術はそれを改善し、効果的な農薬散布を可能にします。研究はまだ実地での試験を経ていませんが、有望な進展として注目されています。
＜関連情報＞
- https://today.ucsd.edu/story/nanoparticles-made-from-plant-viruses-could-be-farmers-new-ally-in-pest-control
- https://pubs.acs.org/doi/10.1021/acs.nanolett.3c01684
TMGMV由来の球状ナノ粒子を用いた殺線虫剤の送達 Delivery of Nematicides Using TMGMV-Derived Spherical Nanoparticles
Adam A. Caparco, Ivonne González-Gamboa, Samuel S. Hays, Jonathan K. Pokorski, and Nicole F. Steinmetz
Nano Letters Published:June 16, 2023
DOI:https://doi.org/10.1021/acs.nanolett.3c01684
Abstract
Spherical nanoparticles (SNPs) from tobacco mild green mosaic virus (TMGMV) were developed and characterized, and their application for agrochemical delivery was demonstrated. Specifically, we set out to develop a platform for pesticide delivery targeting nematodes in the rhizosphere. SNPs were obtained by thermal shape-switching of the TMGMV. We demonstrated that cargo can be loaded into the SNPs during thermal shape-switching, enabling the one-pot synthesis of functionalized nanocarriers. Cyanine 5 and ivermectin were encapsulated into SNPs to achieve 10% mass loading. SNPs demonstrated good mobility and soil retention slightly higher than that of TMGMV rods. Ivermectin delivery to Caenorhabditis elegans using SNPs was determined after passing the formulations through soil. Using a gel burrowing assay, we demonstrate the potent efficacy of SNP-delivered ivermectin against nematodes. Like many pesticides, free ivermectin is adsorbed in the soil and did not show efficacy. The SNP nanotechnology offers good soil mobility and a platform technology for pesticide delivery to the rhizosphere.
