Hooks Cerruti R R, Fereres Alberto
University of Hawaii at Manoa, Department of Plant and Environmental Protection Sciences, 3050 Maile Way, Gilmore Hall 310, Honolulu, HI 96822, USA.
Virus Res. 2006 Sep;120(1-2):1-16. doi: 10.1016/j.virusres.2006.02.006. Epub 2006 Jun 15.
Barrier plants are a management tool based on secondary plants used within or bordering a primary crop for the purpose of disease control. Aphid-transmitted viruses account for approximately 50% of the 600 known viruses with an invertebrate vector. Barrier plants may act as real natural sinks for non-persistent aphid-transmitted viruses and have proved in the past to be an effective crop management strategy to protect against virus infection. Increasing the knowledge on aphid host seeking and flying behaviour, and on how barrier plants may affect the behaviour of aphids and their natural enemies will allow further development of this environmentally-friendly habitat manipulation strategy. An ideal plant barrier should be a non-host for the virus and the vector, but appealing to aphid landing and attractive to their natural enemies and should allow sufficient residence time to allow aphid probing before taking-off occurs. In this review, we have addressed why aphids are manageable by barrier cropping, the mechanisms by which barrier plants affect the occurrence of non-persistently aphid-transmitted viruses and the limitations of using barrier plants as a virus control strategy. Finally, we have pointed out future directions of research that should be conducted to integrate barrier cropping with other disease management strategies, and optimise and extend the use of barrier plants as a strategy for managing aphid-transmitted virus diseases.
屏障植物是一种管理工具，基于在主要作物内部或周边使用的次生植物来控制病害。在已知的600种由无脊椎动物传播媒介传播的病毒中，由蚜虫传播的病毒约占50%。屏障植物可能成为非持久性蚜虫传播病毒真正的天然汇集地，并且过去已证明是一种有效的作物管理策略，可防止病毒感染。增加对蚜虫寻找寄主和飞行行为的了解，以及屏障植物如何影响蚜虫及其天敌行为的了解，将有助于进一步发展这种环境友好型栖息地操纵策略。理想的植物屏障应对病毒和传播媒介而言是非寄主，但要吸引蚜虫降落且对其天敌有吸引力，并且应留出足够的停留时间，以便蚜虫在起飞前进行探测。在本综述中，我们探讨了为何可通过屏障种植来控制蚜虫，屏障植物影响非持久性蚜虫传播病毒发生的机制，以及将屏障植物用作病毒控制策略的局限性。最后，我们指出了未来的研究方向，即应开展研究，将屏障种植与其他病害管理策略相结合，并优化和扩大屏障植物作为管理蚜虫传播病毒病害策略的应用。
