中文摘要：甘薯粉虱是世界上最具侵入性的害虫之一。两种最具破坏性的粉虱隐种是MEAM1/B和MED/Q。在中国MED/Q已经取代了MEAM1/B，且MED/Q的入侵与番茄黄化曲叶病毒（TYLCV）的爆发一致，作者提出假设：带毒B型烟粉虱的预侵染将会影响随后的寄主偏好性。为了验证这一假设，本文（1）进行了生物测定，分别比较了带毒和非带毒MEAM1/B和MED/Q对之前已被带毒和非带毒MEAM1/B和MED/Q侵染过的植物的寄主偏好性；（2）利用GC-MS分析植物挥发物；（3）通过Y型嗅觉仪研究包括对伞花烃、侧柏烯和新植二烯等的化学信号的功能特点（可调节B型烟粉虱-TYLCV-番茄之间的交互作用）。综合各项研究结果表明，带毒MED/Q预先侵染促进了后来的粉虱侵染，并诱导植物挥发新植二烯吸引粉虱。
外文摘要：The sweet potato whitefly, Bemisia tabaci, is one of the most invasive insect pests worldwide. The two most destructive whitefly cryptic species are MEAM1/B and MED/Q. Given that MED/Q has replaced MEAM1/B in China and the invasion of MED/Q has coincided with the outbreak of tomato yellow leaf curl virus (TYLCV), we hypothesize that pre-infestation with viruliferous B. tabaci will affect the subsequent host preferences. To test this hypothesis, we (1) conducted bioassays to compare the host preference of viruliferous and non-viruliferous MEAM1/B and MED/Q, respectively, on plants pre-infested with viruliferous and non-viruliferous MEAM1/B and MED/Q; (2) profiled plant volatiles using GC-MS; and (3) functionally characterized chemical cues could potentially modulate B. tabaci-TYLCV-tomato interactions, including p-cymene, thujene and neophytadiene, using a Y-tube olfactometer. As a result, plants pre-infested with MEAM1/B whiteflies carrying TYLCV or not, did not attract more or less B or Q whiteflies. Plants pre-infested with non-viruliferous MED/Q resisted MEAM1/B but did not affect MED/Q. However, plants pre-infested with viruliferous MED/Q attracted more whiteflies. Feeding of viruliferous MED/Q reduced the production of rho-cymene, and induced thujene and neophytadiene. Functionally analyses of these plant volatiles show that p-cymene deters while neophytadiene recruits whiteflies. These combined results suggest that pre-infestation with viruliferous MED/Q promotes the subsequent whitefly infestation and induces plant volatile neophytadiene which recruits whiteflies.
外文关键词：Bemisia tabaci; plant volatile; neophytadiene; thujene; rho-cymene; tomato yellow leaf curl virus
作者：Shi, Xiaobin; Chen, Gong; Pan, Huipeng; 等
作者单位：中国农业科学院
期刊名称：FRONTIERS IN MICROBIOLOGY
期刊影响因子：4.019
出版年份：2018
出版刊次：6
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