Instituto Valenciano de Investigaciones Agrarias (IVIA), Centro de Protección Vegetal y Biotecnología, CV-315 Km 10.7, 46113, Moncada, Valencia, Spain.
Centro de Citricultura y Producción Vegetal, Instituto Valenciano de Investigaciones Agrarias (IVIA), CV-315 Km 10.7, 46113, Moncada, Valencia, Spain.
Sci Rep. 2021 Sep 20;11(1):18651. doi: 10.1038/s41598-021-97824-0.
The African citrus psyllid Trioza erytreae is one of the major threats to citrus industry as the vector of the incurable disease known as huanglongbing (HLB) or citrus greening. The psyllid invaded the northwest of the Iberian Peninsula 6 years ago. The invasion alarmed citrus growers in the Mediterranean basin, the largest citrus producing area in Europe, which is still free of HLB. Before our study, no research had been carried out on the genetic diversity of T. erytreae populations that have invaded the Iberian Peninsula and the archipelagos of the Macaronesia (Madeira and the Canary Islands). In this study, combining microsatellites markers and mtDNA barcoding analysis, we characterize the genetic diversity, structure and maternal relationship of these new invasive populations of T. erytreae and those from Africa. Our results suggest that the outbreaks of T. erytreae in the Iberian Peninsula may have derived from the Canary Islands. The populations of T. erytreae that invaded Macaronesia and the Iberian Peninsula are likely to have originated from southern Africa. We anticipate our results to be a starting point for tracking the spread of this invasive pest outside of Africa and to be important for optimizing contingency and eradication plans in newly invaded and free areas.
非洲柑橘木虱 Trioza erytreae 是柑橘产业的主要威胁之一，因为它是一种名为黄龙病（HLB）或柑橘绿化病的不治之症的载体。这种木虱在 6 年前入侵了伊比利亚半岛西北部。这次入侵惊动了地中海盆地的柑橘种植者，地中海盆地是欧洲最大的柑橘产区，目前仍然没有 HLB 病。在我们的研究之前，还没有对入侵伊比利亚半岛和马卡罗尼西亚群岛（马德拉群岛和加那利群岛）的柑橘木虱种群进行过遗传多样性研究。在这项研究中，我们结合微卫星标记和 mtDNA 条形码分析，对这些新入侵的非洲柑橘木虱种群和来自非洲的柑橘木虱种群的遗传多样性、结构和母系关系进行了特征描述。我们的研究结果表明，伊比利亚半岛柑橘木虱的爆发可能源自加那利群岛。入侵马卡罗尼西亚和伊比利亚半岛的柑橘木虱种群可能起源于南非。我们预计我们的研究结果将为追踪这种入侵性害虫在非洲以外的传播提供一个起点，并为优化新入侵和无病地区的应急和根除计划提供重要依据。
