壳聚糖包覆介孔二氧化硅纳米粒子用于抑制大豆(Glycine max)中的镰孢菌

IF 2.3 Q1 AGRICULTURE, MULTIDISCIPLINARY ACS agricultural science & technology Pub Date : 2024-05-06 DOI:10.1021/acsagscitech.4c00025
Tana L. O’Keefe, Chaoyi Deng, Yi Wang, Sharmaka Mohamud, Andres Torres-Gómez, Beza Tuga, Cheng-Hsin Huang, Wilanyi R. Alvarez Reyes, Jason C. White and Christy L. Haynes*, 
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引用次数: 0

摘要

有必要开发新的可持续农业技术来帮助保障全球粮食安全,而纳米材料在这一领域显示出了良好的前景。本研究合成了介孔二氧化硅纳米颗粒(MSNs)和壳聚糖包覆介孔二氧化硅纳米颗粒(CTS-MSNs),并在温室和田间研究中通过两种不同的策略将其应用于大豆(Glycine max),以研究溶解硅酸和壳聚糖在促进植物生长和抑制镰刀菌(Fusarium virguliforme)引起的病害中的作用。通过测量健康植株和镰刀菌感染植株收获时的大豆生物量和叶绿素含量来评估植株的生长和健康状况。在温室研究中,对叶面喷施和种子喷施 250 mg/L 纳米粒子进行了比较。单一的 MSNs 种子处理可使病害严重程度降低 30%,健康植株和受感染植株的叶绿素含量均增加 12%。根据温室结果,在后续的田间研究中使用了种子处理,MSNs 和 CTS-MSNs 分别减少了 12% 和 15% 的病害发展。经 CTS-MSNs 处理的植物叶绿素含量大幅提高了 32%。也许最重要的是,纳米级二氧化硅种子处理大大提高了大豆豆荚中微量营养元素(锌、锰、镁、钾、硼)的含量(23-68%),这表明纳米生物强化技术具有解决营养不安全问题的潜在可持续战略。总之,这些研究结果表明,大豆中的 MSN 和 CTS-MSN 种子处理剂可抑制疾病,提高植物健康水平,是纳米可持续农业战略的一部分。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Chitosan-Coated Mesoporous Silica Nanoparticles for Suppression of Fusarium virguliforme in Soybeans (Glycine max)

There is a need to develop new and sustainable agricultural technologies to help provide global food security, and nanoscale materials show promising results in this area. In this study, mesoporous silica nanoparticles (MSNs) and chitosan-coated mesoporous silica nanoparticles (CTS-MSNs) were synthesized and applied to soybeans (Glycine max) by two different strategies in greenhouse and field studies to study the role of dissolved silicic acid and chitosan in enhancing plant growth and suppressing disease damage caused by Fusarium virguliforme. Plant growth and health were assessed by measuring the soybean biomass and chlorophyll content in both healthy and Fusarium-infected plants at harvest. In the greenhouse study, foliar and seed applications with 250 mg/L nanoparticle treatments were compared. A single seed treatment of MSNs reduced disease severity by 30% and increased chlorophyll content in both healthy and infected plants by 12%. Based on greenhouse results, seed application was used in the follow-up field study and MSNs and CTS-MSNs reduced disease progression by 12 and 15%, respectively. A significant 32% increase was observed for chlorophyll content for plants treated with CTS-MSNs. Perhaps most importantly, nanoscale silica seed treatment significantly increased (23–68%) the micronutrient (Zn, Mn, Mg, K, B) content of soybean pods, suggesting a potential sustainable strategy for nano-enabled biofortification to address nutrition insecurity. Overall, these findings indicate that MSN and CTS-MSN seed treatments in soybeans enable disease suppression and increase plant health as part of a nano-enabled strategy for sustainable agriculture.

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