Preference of Green Peach Aphids for Virus-Infected Sugar beet Leaves12

Macias, W.; Mink, G. I.

doi:10.1093/jee/62.1.28

Cited by 47 publications

(39 citation statements)

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“…Preferences and increased feeding or reproduction by cucumber beetles and melon aphids did not translate to in¯uences on insect densities on whole C. cucumerinuminfected plants in the ®eld, in contrast to preferences by striped cucumber beetles for whole caged cucumber seedlings infected with a necrosis-causing virus (Apriyanto and Potter 1990) and increased alate aphid movement to virus-infected sugarbeets (Macias and Mink 1969). The signi®cant dependence of cross-eects on leaf position and in some cases time may have contributed to the lack of ®eld eects, since in the ®eld experiment plants were not examined with the same degree of spatial resolution as greenhouse studies, and were not sampled until 2 weeks after inoculation.…”

Section: Discussionmentioning

confidence: 89%

Plant-mediated interactions between insects and a fungal plant pathogen and the role of plant chemical responses to infection

Moran

1998

Oecologia

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Diverse organisms simultaneously exploit plants in nature, but most studies do not examine multiple types of exploiters like phytophagous insects and fungal, bacterial, and viral plant pathogens. This study examined patterns of induction of antipathogenic peroxidase enzymes and phenolics after infection by the cucurbit scab fungus, Cladosporium cucumerinum, and then determined if induction mediated ecological eects on Colletotrichum orbiculare, another fungal pathogen, and two insect herbivores, spotted cucumber beetles, and melon aphids. Peroxidase induction occurred in inoculated,`local,' symptom-bearing leaves 3 days after inoculation, and in`systemic,' symptom-free leaves on the same plants 1 day later. Phenolics were elevated in systemic but not in local leaves 3 days after inoculation. Detached systemic leaves from plants inoculated with C. cucumerinum developed signi®cantly fewer and smaller lesions after challenge with C. orbiculare. Spotted cucumber beetles did not show consistently signi®-cant preferences for infected versus control leaf disks in comparisons using local or systemic leaves, but trends diered signi®cantly between leaf positions. In no-choice tests, beetles removed more leaf area from local but not from systemic infected leaves compared to control leaves, and melon aphid reproduction was enhanced on local infected leaves. In the ®eld, cucumber beetle and melon aphid densities did not dier between infected and control plants. Antipathogenic plant chemical responses did not predict reduced herbivory by insects. Other changes in metabolism may explain the positive direction and spatially dependent nature of plant-mediated interactions between pathogens and insects in this system.

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Section: Discussionmentioning

confidence: 89%

Plant-mediated interactions between insects and a fungal plant pathogen and the role of plant chemical responses to infection

Moran

1998

Oecologia

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“…The preferential acquisition of CaMV by infected plants might be because these plants are more attractive to vectors. For example, Macias & Mink (1969) found that in detached-leaf experiments with sugar beet, M. persicae preferred leaves infected with BWYV or sugar beet yellows. This might also explain the observations of Walsh & Tomlinson (1985) who surveyed oilseed rape in Warwickshire (UK) and found that all plants infected with BWYV or broccoli necrotic yellows cytorhabdovirus (BNYV) were also infected with CaMV.…”

Section: Associations Among Virusesmentioning

confidence: 99%

The prevalence and spatial distribution of viruses in natural populations of Brassica oleracea

et al. 1999

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We report a survey of four viruses (beet western yellows luteovirus (BWYV), cauliflower mosaic caulimovirus (CaMV), turnip mosaic potyvirus (TuMV), turnip yellow mosaic tymovirus (TYMV)) in five natural populations of Brassica oleracea in Dorset (UK). All four viruses were common ; 43% of plants were infected with BWYV, 60% with CaMV, 43% with TuMV and 18% with TYMV. For each virus there were significant differences in the proportion of infected plants among populations, which were not completely explained by differences in the age of plants. Multiple virus infections were prevalent, with 54% of plants having two or more virus types. There were statistically significant associations between pairs of viruses. The CaMV was positively associated with the other three viruses, and BWYV was also positively associated with TuMV. There was no detectable association between BWYV and TYMV, whereas TuMV and TYMV were negatively associated. We suggest these associations result from BWYV, CaMV and TuMV having aphid vectors in common, as aphids are attracted to plants that already have a virus infection. Infected plants were distributed randomly or were very weakly aggregated within populations. The implications of widespread multiple virus infections in natural plant populations are discussed with respect to the release of transgenic plants expressing virus-derived genes.

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“…Insect vectors feeding on infected plants have been reported to differ in growth rates, longevity and fecundity, as compared with those on uninfected plants (Kennedy 1951;Baker 1960;Hodgson 1981;Costa et al 1991;Fereres et al 1999). Some insect vectors preferentially colonize infected plants that are superior hosts to uninfected plants (Macias & Mink 1969;Ajayi & Dewar 1983;Eckel & Lampert 1996;Castle et al 1998) or avoid infected plants that are inferior hosts (Blua & Perring 1992). Vector responses to virusinfected plants may be advantageous for the virus by promoting its spread (Blua & Perring 1992;McElhany et al 1995).…”

Section: Introductionmentioning

confidence: 99%

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

Eigenbrode

Ding

Shiel

et al. 2002

Proc. R. Soc. Lond. B

342

378

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The in¯uence 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 in¯uenced 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 lea¯ets of PLRV-infected potatoes as compared with lea¯ets 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 lea¯et models treated with volatiles collected from PLRV-infected plants as compared with those collected from uninfected plants. The speci® c cues eliciting the aphid responses were not determined, but differences between headspace volatiles of infected and uninfected plants suggest possible ones.

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Preference of Green Peach Aphids for Virus-Infected Sugar beet Leaves12

Cited by 47 publications

References 0 publications

Plant-mediated interactions between insects and a fungal plant pathogen and the role of plant chemical responses to infection

Plant-mediated interactions between insects and a fungal plant pathogen and the role of plant chemical responses to infection

The prevalence and spatial distribution of viruses in natural populations of Brassica oleracea

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

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