Citrus huanglongbing (HLB) represents a major threat to citriculture due to its rapid spread, difficulty of control, severe yield losses, and substantial increases in production costs in HLB-affected orchards. Successful management depends on detailed knowledge of the epidemiology of this disease, which is associated with phloem-limited bacteria of the genus Candidatus Liberibacter that are transmitted by phloem sap–feeding insects known as psyllids (Hemiptera: Psylloidea). Candidatus L. asiaticus (CLas) and the Asian citrus psyllid Diaphorina citri Kuwayama are the major etiological agent and vector, respectively, in the Americas and Asia. This review provides up-to-date information on the relationships of psyllid vectors with Ca. Liberibacter spp. associated with HLB, with emphasis on D. citri and CLas. Knowledge of the transmission mechanisms of these bacteria, as well as aspects of the biology, ecology, and behavior of the vector in relation to the environment, is essential to gain understanding of the HLB epidemics. Such knowledge provides a basis for developing innovative control methods and establishing sustainable management strategies for HLB.

中文翻译：

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了解自由念珠菌的木虱传播作为管理黄龙病的基础

柑橘黄龙病 (HLB) 由于其传播迅速、控制困难、产量损失严重以及受 HLB 影响的果园生产成本大幅增加，对柑橘栽培构成了重大威胁。成功的管理取决于对该病流行病学的详细了解，该病与自由韧皮部的韧皮部限制性细菌有关，该细菌由称为木虱（半翅目：木虱）的以韧皮部汁液为食的昆虫传播。Candidatus L. asiaticus (CLas) 和亚洲柑橘木虱 Diaphorina citri Kuwayama 分别是美洲和亚洲的主要病原体和媒介。这篇综述提供了木虱载体与 Ca 关系的最新信息。自由杆菌属 与 HLB 相关，重点是 D. citri 和 CLas。了解这些细菌的传播机制，以及与环境相关的载体的生物学、生态学和行为方面的知识，对于了解 HLB 流行病至关重要。这些知识为 HLB 开发创新控制方法和建立可持续管理策略提供了基础。