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Development of glycine-copper(ii) hydroxide nanoparticles with improved biosafety for sustainable plant disease management

机译：甘氨酸 - 铜（II）氢氧化物纳米粒子改善可持续植物疾病管理的生物安全性

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摘要

Cabbage black rot caused byXanthomonas campestrispv.campestris(Xcc) leads to decrease of the production of up to 70%. Copper biocides are widely used to control this disease because of their low-cost application and broad-spectrum antimicrobial activities. Extensive spraying of traditional copper biocides would cause undesirable effects on plants and the environment. In this work, a novel copper-based microbicide was prepared by binding copper with glycine in sodium hydroxide solution (Gly-Cu(OH)(2)NPs) and characterized by inductively coupled plasma atomic emission spectroscopy, high-resolution transmission electron microscopy, Fourier transformation infrared spectroscopy, and dynamic light scattering. The results showed that the prepared Gly-Cu(OH)(2)NPs had a mean diameter of 240 nm with copper content more than 25.0% and their antimicrobial efficacies against Xcc were significantly better than Kocide 3000 at 400-800 mg L(-1)of copper after spraying for 14 days. The phytotoxicity tests under greenhouse conditions showed that Gly-Cu(OH)(2)NPs were safer to plants than Kocide 3000 and obviously promoted the growth of plants, which led to the increase of fresh weights of Chinese cabbage and tomato seedlings by 6.34% and 3.88% respectively at a concentration of 800 mg L(-1)of copper. As a novel copper-based microbicide, the Gly-Cu(OH)(2)NPs can improve effective utilization of copper-based bactericides and reduce phytotoxicity to plants and would be a potential alternative for sustainable plant disease management.
机译：白菜黑色腐烂导致Byxanthomonas Campestrispv.campestris（XCC）导致产量降低高达70％。由于其低成本的应用和广谱抗微生物活性，铜生物剂被广泛用于控制这种疾病。广泛喷涂传统铜杀杀铜剂将对植物和环境产生不希望的影响。在这项工作中，通过在氢氧化钠溶液中与甘氨酸结合铜（甘氨酸 - Cu（2）NPS）并通过电感耦合等离子体原子发射光谱，高分辨率透射电子显微镜来表征，制备新的铜基杀微生物剂。傅里叶变换红外光谱，动态光散射。结果表明，制备的甘醇-Cu（OH）（2）NPS具有240nm的平均直径，铜含量超过25.0％，其对XCC的抗微生物效率明显优于400-800mg L（ - 1）喷涂后铜14天。温室条件下的植物毒性试验表明，甘氨酸 - Cu（OH）（2）个NPS对植物比kocide 3000更安全，并且明显促进了植物的生长，从而增加了大白菜和番茄幼苗的鲜法增加了6.34％ 3.88％分别以800mg L（-1）铜的浓度。作为一种新型铜基杀微生物剂，甘氨酸 - Cu（OH）（2）NPS可以改善铜基杀菌剂的有效利用率，并将植物毒性降低到植物中，并且是可持续植物疾病管理的潜在替代方案。

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  • 来源
    《RSC Advances》 |2020年第36期|共6页
  • 作者

    Dong Hongqiang; Xiong Renci; Liang You; Tang Gang; Yang Jiale; Tang Jingyue; Niu Junfan; Gao Yunhao; Zhou Zhiyuan; Cao Yongsong;

  • 作者单位

    China Agr Univ Coll Plant Protect Beijing Peoples R China;

    Tarim Univ Coll Plant Sci Alaer Peoples R China;

    China Agr Univ Coll Plant Protect Beijing Peoples R China;

    China Agr Univ Coll Plant Protect Beijing Peoples R China;

    China Agr Univ Coll Plant Protect Beijing Peoples R China;

    China Agr Univ Coll Plant Protect Beijing Peoples R China;

    China Agr Univ Coll Plant Protect Beijing Peoples R China;

    China Agr Univ Coll Plant Protect Beijing Peoples R China;

    China Agr Univ Coll Plant Protect Beijing Peoples R China;

    China Agr Univ Coll Plant Protect Beijing Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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