pathogenic bacteria. The antibacterial mechanism showed that it could considerably reduce various virulence factors (such as extracellular enzymes, biofilm, and T3SS effectors) and inhibit the expression of virulence factor-related genes. In addition, the control efficiency of compound B6 against rice bacterial leaf blight at 200 μg mL–1 was 46.15–49.15%, and their control efficiency was improved by approximately
基于抑制细菌毒力因子的抗感染策略是开发新型抗菌药物以解决传统药物/农药杀菌活性引发的耐药性的重要方向。为了识别和获得更有效和多样化的毒力靶向分子,我们制备了一系列 3-hydroxy-2-methyl-1-pyridin-4-(1 H )-one衍
生物并评估了它们的抗菌行为。化合物B 6表现出最高的
生物活性,半数最大有效浓度 (
EC 50 ) 值范围为 9m 10.03 至 30.16 μg mL –1对抗三种植物病原菌。抗菌机制表明它可以显着降低各种毒力因子(如细胞外酶、
生物膜和T3SS效应子)并抑制毒力因子相关
基因的表达。此外,复方B 6在200 μg·mL -1浓度下对
水稻细菌性叶枯病的防效为46.15~49.15%,添加农药助剂后防效提高约12%。因此,开发了一类新的靶向细菌毒力因子的候选杀菌剂来控制植物细菌病害。