Preparation of salicylic acid nano-protectant with dual synergistic mechanism: High direct fungicidal activity and plant defence toward cotton Verticillium wilt

文献类型： 外文期刊

第一作者： Yin, Jiaming

作者： Yin, Jiaming;Zhao, Jiajia;Xue, Fan;Shen, Jie;Yan, Shuo;Yin, Jiaming;Zhao, Jiajia;Wang, Zeng;Xue, Fan;Shen, Jie;Yan, Shuo;Wang, Qi;Guo, Huiming;Cheng, Hongmei;Su, Xiaofeng;Guo, Huiming;Cheng, Hongmei;Su, Xiaofeng;Li, Jie;Yin, Meizhen

作者机构：

关键词： Drug delivery; Fungicidal activity; Nanocarrier; Nano-protectant; Plant defense

期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.3； 五年影响因子：13.2 ）

ISSN： 1385-8947

年卷期： 2024 年 496 卷

页码：

收录情况： SCI

摘要： Nanomaterials exhibit a wide range of potential applications in agricultural field. Here we construct a series of nano-protectants based on one model plant elicitor salicylic acid (SA) and six types of nanomaterials, including mesoporous silica nanosphere (MSN), mesoporous Fe3O4 nanosphere (Fe3O4), carbon quantum dot (CQD), polylactic acid-glycolic acid copolymer (PLGA), star polycation (SPc) and hydrophilic and lipophilic diblock polymer (HLDP), and explore the best nanomaterial for plant disease control. Our results demonstrate that the HLDP-SA nano-protectant displays the best control effects on cotton Verticillium wilt caused by one of the most notorious soil-borne fungi (Verticillium dahliae). The HLDP self-assembles with SA via electrostatic interaction into HLDP-SA nano-protectant, which changes the morphology of SA from needle-like particles to spherical particles. The loading efficiency of HLDP toward SA is calculated to be 49.28%, and the plant uptake of HLDPloaded SA significantly increases by 3-4 times. HLDP-SA nano-protectant can suppress the spore germination of V991 strain with the spore germination rate of merely 2%, and its colony diameter is significantly decreased by 64.9%. Our transcriptome data demonstrate that the HLDP-SA nano-protectant accelerates the delivery and translocation of exogenous substances into V. dahliae, which exhibits the highest direct fungicidal activity via inhibiting the metabolism and weakening the pathogenicity. Meanwhile, its enhanced plant uptake with better adhesion performance on leaves amplifies the plant defense induced by SA via accelerating the biosynthesis of plant secondary metabolites, such as SA, abscisic acid (ABA) and gossypol. This study provides a powerful nanomaterial with dual synergistic mechanism for designing nano-protectant with high fungicidal activity and amplified plant defense.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序