Abstract：
Biological control is a promising approach to enhance pathogen and pest control to ensure high productivity in cash crop production. Therefore, PGPR biofertilizers are very suitable for application in the cultivation of tea plants (Camellia sinensis) and tobacco, but it is rarely reported so far. In this study, production of a consortium of three strains of PGPR were applied to tobacco and tea plants. The results demonstrated that plants treated with PGPR exhibited enhanced resistance against the bacterial pathogen Pseudomonas syringae (PstDC3000). The significant effect in improving the plant\'s ability to resist pathogen invasion was verified through measurements of oxygen activity, bacterial colony counts, and expression levels of resistance-related genes (NPR1, PR1, JAZ1, POD etc.). Moreover, the application of PGPR in the tea plantation showed significantly reduced population occurrences of tea green leafhoppers (Empoasca onukii Matsuda), tea thrips (Thysanoptera:Thripidae), Aleurocanthus spiniferus (Quaintanca) and alleviated anthracnose disease in tea seedlings. Therefore, PGPR biofertilizers may serve as a viable biological control method to improve tobacco and tea plant yield and quality. Our findings revealed part of the mechanism by which PGPR helped improve plant biostresses resistance, enabling better application in agricultural production.
摘要：
生物防治是增强病原体和病虫害防治以确保经济作物生产高生产率的有前途的方法。因此,PGPR生物肥料非常适合在茶树（茶树）和烟草的种植中应用，但是到目前为止很少有报道。在这项研究中,将三个PGPR菌株的财团的生产应用于烟草和茶树。结果表明，用PGPR处理的植物对细菌病原体丁香假单胞菌（PstDC3000）的抗性增强。在提高植物抵抗病原体入侵的能力的显著效果是通过氧活性的测量验证，细菌菌落计数，和抗性相关基因(NPR1、PR1、JAV1、POD等)的表达水平。).此外，PGPR在茶园中的应用表明，茶绿叶菊（EmpoascaonukiMatsuda）的种群数量显着减少，茶蓟马（Thysanoptera：Thripidae），阿雷龙canthusspiniferus（Quaintanca）和减轻茶苗中的炭疽病。因此,PGPR生物肥料可作为一种可行的生物防治方法，以提高烟草和茶树的产量和质量。我们的发现揭示了PGPR帮助提高植物生物胁迫抗性的部分机制，更好地应用于农业生产。
