Many plant viruses are significant pathogens that are able to utilize arthropod vectors to infect a vast range of host plants, resulting in serious economic damage to world food crops. One such crop is Sorghum bicolor, grain sorghum, which is the fifth most important global cereal crop, it is grown for human consumption, animal feed, and biofuel. In this study, the Potyviruses Johnsongrass mosaic virus (JGMV), Maize dwarf mosaic virus (MDMV), Sugarcane mosaic virus (SCMV), and Sorghum mosaic virus (SRMV) were tested for their rates of transmission into tissues of S. bicolor by the corn leaf aphid, Rhopalosiphum maidis. In addition, virus infected and non-infected S. bicolor plants were assessed for their effects on R. maidis host plant selection behavior. Further, the propagation of each virus (viral ssRNA copy number) in infected plants was determined using qPCR amplification of viral coating protein gene fragments. The mean rate of JGMV transmission into S. bicolor plants by R. maidis was significantly lower than transmission of MDMV, SCMV, and/or SRMV. Sorghum bicolor plants infected with MDMV, SCMV or SRMV also attract significantly more R. maidis than non-infected plants. JGMV-infected plants do not effect a similar change in R. maidis plant choice preference. The preference of non-viruliferous R. maidis toward S. bicolor plants infected with MDMV, SCMV or SRMV, and lack of such attraction by JGMV-infected plants may play a role in virus transmission strategy and efficiency by the vector.

许多植物病毒是重要的病原体，能够利用节肢动物载体感染大量寄主植物，对世界粮食作物造成严重的经济损失。一种这样的作物是双色高粱，即谷物高粱，它是全球第五大最重要的谷物作物，其种植目的是供人类消费，动物饲料和生物燃料。在这项研究中，马铃薯Y病毒高粱花叶病毒（JGMV），玉米矮花叶病毒（MDMV），甘蔗花叶病毒（SCMV），高粱花叶病毒（SRMV）中测试了它们的传输率成组织S.双色由玉米叶蚜，Rhodolosiphum maidis。此外，病毒感染和未感染的双色链球菌评估植物对红斑病菌宿主植物选择行为的影响。此外，使用病毒包被蛋白基因片段的qPCR扩增来确定每种病毒在感染植物中的繁殖（病毒ssRNA拷贝数）。JGMV传输的平均速率为S.双色植物按R.蚜比MDMV，SCMV，和/或SRMV的传输被显著降低。高粱感染MDMV，SCMV或SRMV植物也吸引了更多的显著R.蚜比非感染植物。JGMV感染的植株不会影响类似的变化R.蚜植物选择偏好。非毒力的R. maidis对被MDMV，SCMV或SRMV感染的双色链霉菌植物，以及被JGMV感染的植物缺乏这种吸引力，可能在载体的病毒传播策略和效率中起作用。