Volatiles from potato plants infected with potato leafroll virus attract and arrest the virus vector, Myzus persicae (Homoptera: Aphididae)

被引:294
作者
Eigenbrode, SD [1 ]
Ding, HJ
Shiel, P
Berger, PH
机构
[1] Univ Idaho, Div Entomol, Dept Plant Soil & Entomol Sci, Moscow, ID 83844 USA
[2] Univ Idaho, Div Plant Pathol, Dept Plant Soil & Entomol Sci, Moscow, ID 83844 USA
关键词
plant viruses; volatiles; insect vectors; potatoes; green peach aphid;
D O I
10.1098/rspb.2001.1909
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
The influence of viral disease symptoms on the behaviour of virus vectors has implications for disease epidemiology. Here we show that previously reported preferential colonization of potatoes infected by potato leafroll virus (genus Polerovirus) (luteovirus) (PLRV) by alatae of Myzus persicae, the principal aphid vector of PLRV, is influenced by volatile emissions from PLRV-infected plants. First, in our bioassays both differential immigration and emigration were involved in preferential colonization by aphids of PLRV-infected plants. Second, M. persicae apterae aggregated preferentially, on screening above leaflets of PLRV-infected potatoes as compared with leaflets from uninfected plants, or from plants infected with potato virus X (PVX) or potato virus Y (PVY). Third, the aphids aggregated preferentially on screening over leaflet models treated with volatiles collected from PLRV-infected plants as compared with those collected from uninfected plants. The specific cues eliciting the aphid responses were not determined, but differences between headspace volatiles of infected and uninfected plants suggest possible ones.
引用
收藏
页码:455 / 460
页数:6
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