Interactions between insects and plant pathogens have been more enthusiastically studied in the recent decade, especially those relationships which takes the insects as vectors. The spectrum of these interactions ranges from mutualistic to pathogenic. The length of the co-evolutionary process will determine whether a microorganism shares a friend or a foe relationship with its host, and a friendship connection is frequently observed if the coexistence is longer. This review updates knowledge about the morphological, physiological and genetic mechanisms that drive the interaction between ‘Candidatus Liberibacter asiaticus’ (Las) and its vector, the Asian citrus psyllid, Diaphorina citri. Las is the predominant causal agent of citrus huanglongbing (HLB) disease, the major constrain to citrus production worldwide. This bacterium is transmitted by D. citri, in a propagative-circulative manner during its feeding from plant host. Understanding of the interactions among vector, plant pathogen and host plant are important for the management of this vector-borne disease complex.

中文翻译：

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是敌是友？'Candidatus Liberibacter asiaticus'与柑橘木虱的关系

近十年来，昆虫与植物病原体之间的相互作用得到了更加热烈的研究，特别是那些以昆虫为载体的相互作用。这些相互作用的范围从共生到致病。共同进化过程的长短将决定微生物与其宿主是朋友还是敌人的关系，如果共存时间较长，则经常观察到友谊关系。这篇综述更新了关于驱动 'Candidatus Liberibacter asiaticus' (Las) 与其载体、亚洲柑橘木虱、Diaphorina citri 之间相互作用的形态、生理和遗传机制的知识。Las 是柑橘黄龙病 (HLB) 病害的主要病原体，是全球柑橘生产的主要制约因素。这种细菌由 D 传播。citri，在其从植物宿主取食期间以繁殖循环方式。了解媒介、植物病原体和宿主植物之间的相互作用对于管理这种媒介传播的疾病复合体很重要。