Nanoelicitors with prolonged retention and sustained release to produce beneficial compounds in wines,Environmental Science: Nano

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Nanoelicitors with prolonged retention and sustained release to produce beneficial compounds in wines
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2021-10-07 , DOI: 10.1039/d1en00504a
Belén Parra-Torrejón ₁ , Gloria B. Ramírez-Rodríguez ₁ , Maria J. Giménez-Bañón ₂ , Juan D. Moreno-Olivares ₂ , Diego F. Paladines-Quezada ₂ , Rocío Gil-Muñoz ₂ , José M. Delgado-López ₁

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Methyl jasmonate (MeJ), an elicitor able to trigger plant defence responses, is a natural and clean alternative to the use of hazardous pesticides. However, the efficient application of MeJ in fields is very limited due to its poor water solubility, thermal stability and phytotoxicity at the high dose required to produce beneficial effects in plants. Here, a novel nanoelicitor (nano-MeJ) was prepared through the functionalization of biocompatible calcium phosphate nanoparticles. The resulting nanocomposite produced a significant increase of beneficial compounds (phytoalexins) in grapes and wines at low MeJ dosage. Indeed, results from in vivo field experiments on Monastrell vineyards (Vitis vinifera L.) revealed that grapes treated with nano-MeJ provided red wines with high content of beneficial stilbenes, similar to the levels obtained with conventional treatments but applying 10 times higher MeJ dosage. We demonstrated that the nanoparticles protect and retain MeJ on the surface of the leaves over long periods of time. This protective action along with the slow release provides a prolonged supply of the resistance-inductor elicitor through the leaves, resulting in a significant efficiency increase. Additionally, the nanocomposite was stable for long periods of time (more than 175 days) and exhibited lower cytotoxicity compared to MeJ, which are important features for its efficient and safe use in agriculture.

中文翻译：

具有延长保留和持续释放的纳米激发剂可在葡萄酒中产生有益化合物

茉莉酸甲酯 (MeJ) 是一种能够引发植物防御反应的诱导剂，是使用有害农药的一种天然且清洁的替代品。然而，由于其水溶性差、热稳定性差和在植物中产生有益效果所需的高剂量植物毒性，其在田间的有效应用非常有限。在这里，通过生物相容性磷酸钙纳米颗粒的功能化制备了一种新型纳米激发剂（nano-MeJ）。所得纳米复合材料在低 MeJ 剂量下显着增加了葡萄和葡萄酒中的有益化合物（植物抗毒素）。的确，从结果体内的Monastrell葡萄园田间试验（葡萄L.) 揭示，用纳米 MeJ 处理的葡萄提供了含有高含量有益芪的红葡萄酒，与常规处理获得的水平相似，但应用了 10 倍的 MeJ 剂量。我们证明了纳米颗粒可以长时间保护并保留叶子表面的 MeJ。这种保护作用与缓慢释放一起提供了通过叶子的电阻电感激发器的延长供应，从而显着提高了效率。此外，纳米复合材料在很长一段时间内（超过 175 天）保持稳定，并且与 MeJ 相比表现出较低的细胞毒性，这是其在农业中高效安全使用的重要特征。

更新日期：2021-10-26

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