Romero Juan J, Soler-Arango Juliana, Coustet Marcos E, Moracci Daniela B, Reinoso Sebastián, Yanniccari Marcos E, Schneider-Teixeira Aline, Herrera Jimena M
YPF Tecnología (Y-TEC), Av. del Petróleo S/N entre 129 y 143, Berisso 1923, Argentina.
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, Ciudad Autónoma de Buenos Aires 5000, Argentina.
Plants (Basel). 2025 Jan 18;14(2):276. doi: 10.3390/plants14020276.
Numerous studies have shown the potential effect of bioactive agents against weeds. In this study, we developed two binary formulations with nonanoic acid, citral, or thymoquinone as herbicides and evaluated their physicochemical properties. The presence of the bioactive compounds in the formulations was confirmed through FTIR spectroscopy. A dynamic light scattering study was conducted to characterize the emulsified formulations and the size and distribution of the aggregates. In addition, thermogravimetric analysis was performed to ensure the thermal stability of the formulations. The herbicidal activity against , , and weeds was evaluated, and each species showed different levels of sensitivity with half maximal inhibitory concentration doses from 0.07 to 5 mM. The binary formulations negatively affected the photosynthetic system reducing Fv/Fm values at 5 days after treatment. Lastly, the phytotoxic effect of the formulations was tested on wheat germination, and they did not inhibit plant germination and seedling growth at ≤5 mM after 14 days of application. The development of new formulations with natural compounds as bioactive ingredients would allow control of a wide spectrum of weeds through a multitarget-site effect.
大量研究表明了生物活性剂对杂草的潜在作用。在本研究中，我们开发了两种以壬酸、柠檬醛或百里醌作为除草剂的二元制剂，并评估了它们的物理化学性质。通过傅里叶变换红外光谱法确认了制剂中生物活性化合物的存在。进行了动态光散射研究以表征乳化制剂以及聚集体的大小和分布。此外，进行了热重分析以确保制剂的热稳定性。评估了对、和杂草的除草活性，每种杂草表现出不同程度的敏感性，半数最大抑制浓度剂量为0.07至5 mM。二元制剂对光合系统产生负面影响，在处理后5天降低了Fv/Fm值。最后，测试了制剂对小麦发芽的植物毒性作用，在施用14天后，浓度≤5 mM时它们并未抑制植物发芽和幼苗生长。开发以天然化合物作为生物活性成分的新制剂将能够通过多靶点效应控制广泛的杂草。
