中文摘要：病毒可能会诱导植物寄主与介体的变化以提高其传播。白背飞虱（WBPH）和褐飞虱（BPH）分别是南方水稻黑条矮缩病毒（SRBSDV）和水稻齿叶矮缩病毒（RRSV）的介体，造成严重的水稻病害。本文研究描述了不同病害阶段SRBSDV和RRSV对介体和非介体飞虱寄主选择行为的影响。
外文摘要：Viruses may induce changes in plant hosts and vectors to enhance their transmission. The white-backed planthopper (WBPH) and brown planthopper (BPH) are vectors of Southern rice black-streaked dwarf virus (SRBSDV) and Rice ragged stunt virus (RRSV), respectively, which cause serious rice diseases. We herein describe the effects of SRBSDV and RRSV infections on host-selection behaviour of vector and non-vector planthoppers at different disease stages. The Y-tube olfactometer choice and free-choice tests indicated that SRBSDV and RRSV infections altered the attractiveness of rice plants to vector and non-vector planthoppers. The attractiveness was mainly mediated by rice volatiles, and varied with disease progression. The attractiveness of the SRBSDV-or RRSV-infected rice plants to the virus-free WBPHs or BPHs initially decreased, then increased, and finally decreased again. For the viruliferous WBPHs and BPHs, SRBSDV or RRSV infection increased the attractiveness of plants more for the nonvector than for the vector planthoppers. Furthermore, we observed that the attractiveness of infected plants to planthoppers was positively correlated with the virus titres. The titre effects were greater for virus-free than for viruliferous planthoppers. Down-regulated defence genes OsAOS1, OsICS, and OsACS2 and up-regulated volatile-biosynthesis genes OsLIS, OsCAS, and OsHPL3 expression in infected plants may influence their attractiveness.
作者：Lu, Guanghua; Zhang, Tong; He, Yuange; 等
作者单位：华南农业大学
期刊名称：Scientific Reports
期刊影响因子：5.228
出版年份：2016
出版刊次：12
点击下载：病毒可改变水稻对稻飞虱的吸引力，由挥发物调节，并与病毒滴度以及抗性挥发性生物合成基因的表达有关