Dr Glen Powell

Science Project Leader
Department:Pest & Pathogen Ecology
Tel:01732 523734
DD:01732 523777
Fax:01732 849067

Research Interests

I am interested in the biology of insect crop pests and the application of innovative research to the development of sustainable crop protection.  Much of my previous research has concerned aphids, particularly exploring how these sap-feeding insects overcome host plant defences and transmit viruses.  Current research is focussed on major insect pests of soft fruit horticulture, with the overall goal of reducing dependency on pesticides.

Selected Publications

  • Kanvil, S, Pham, J, Lopez-Cobollo, R, Selby, M, Bennett, M, Beckingham, C, Powell, G & Turnbull, C. (2017). Cucurbit extrafascicular phloem has strong negative impacts on aphids and is not a preferred feeding site. Plant Cell and Environment 40. (doi: 10.1111/pce.13053).
  • Stewart, SA, Hodge, S, Bennett, M, Mansfield, JW & Powell, G. (2016). Aphid induction of phytohormones in Medicago truncatula is dependant upon duration of feeding, aphid density and the genotypes of both plant and insect Arthropod-Plant Interactions 10. 41-53.
  • Kanvil S, Collins, CM, Powell G and Turnbull CG. (2015). Cryptic virulence and avirulence alleles revealed by controlled sexual recombination in pea aphids. Genetics 199. 581-93.
  • Kanvil S, Powell, G and Turnbull C. (2014). Pea aphid biotype performance on diverse Medicago host genotypes indicates highly specific virulence and resistance functions. Bulletin of Entomological Research 104. 689-701.
  • Fray LM, Leather SR, Powell G, Slater R, McIndoe E, Lind RJ. (2014). Behavioural avoidance and enhanced dispersal in neonicotinoid-resistant Myzus persicae (Sulzer) Pest Management Science 70. 88-96.
  • Westwood JH, Groen SC, Du Z, Murphy AM, Anggoro DT, Tungadi T, Luang-In V, Lewsey MG, Rossiter JT, Powell G, Smith AG, Carr JP. (2013). A trio of viral proteins tunes aphid-plant interactions in Arabidopsis thaliana. PLoS One 8. 1-18.
  • Nam KJ, Powell G, Hardie J. (2013). Does phloem-based resistance to aphid feeding affect host-plant acceptance for reproduction? Parturition of the pea aphid, Acyrthosiphon pisum, on two near-isogenic lines of Medicago truncatula. Bulletin of Entomological Research 103. 683-689.
  • Westwood JH, McCann L, Naish M, Dixon H, Murphy AM, Stancombe MA, Bennett MH, Powell G, Webb AA, Carr JP. (2013). A viral RNA silencing suppressor interferes with abscisic acid-mediated signalling and induces drought tolerance in Arabidopsis thaliana. Molecular Plant Pathology 14. 158-170.
  • Hodge S, Ward JL, Beale MH, Bennett M, Mansfield JW, Powell G. (2013). Aphid-induced accumulation of trehalose in Arabidopsis thaliana is systemic and dependant upon aphid density. Planta 237. 1057-1064.
  • Jeger MJ, Chen Z, Cunningham E, Martin G, Powell G. (2012). Population biology and epidemiology of plant virus epidemics: from tripartite to tritrophic interactions. European Journal of Plant Pathology 133. 3-23.
  • Ziebell, H., Murphy, A.M., Groen, S.C., Tungadi, T., Westwood, J.H., Lewsey, M.G., Moulin, M., Kleczkowski, A., Smith, A.G., Stevens, M., Powell, G. & Carr, J.C. 2011. (2011). Cucumber mosaic virus and its 2b RNA silencing suppressor modify plant-aphid interactions in tabacco Science Reports 1. (doi:10.1038/srep00187).
  • Hodge S, Ward, J.L., Beale, M.H. & Powell, G. (2011). The effects of a plant defence priming compound - aminobutyric acid on multitrophic interactions between an insect herbivore and hymenopterous parasitoid. Biocontrol 56. 699-711.
  • Jeger, M.J., Chen, Z., Powell, G., Hodge, S. & Van den Bosch, F.. (2011). Interactions in a host plant-virus-vector-parasitoid system: Modelling the consequences for virus transmission and disease dynamics. Virus Research 159. 183-193.
  • Hodge, S., Hardie, J. & Powell, G. (2010). Parasitoids aid dispersal of a nonpersistently transmitted plant virus by disturbing the aphid vector. Agricultural and Forest Entomology 13. 83-88.
  • Lewsey, M.G., Murphy, A.M., MacLean, D., Dalchau, N., Westwood, J.H., Macaulay, K., Bennett, M.H., Moulin, M., Hanke, D.E., Powell, G., Smith, A.G. & Carr, J.P.. (2010). Disruption of two defensive signalling pathways by a viral RNA silencing suppressor. Molecular Plant-Microbe Interactions 23. 835-845.
  • Stewart, S.A., Hodge, S., Ismail, N., Mansfield, J.W., Feys, B.J., Prosperi, J.M., Huguet, T., Ben, C., Gentzbittel, L. & Powell, G.. (2009). The RAP1 gene confers effective, race-specific resistance to the pea aphid in Medicago Truncatula independent of the hypersensitive reaction. Molecular Plant-Microbe Interactions 22. 1645-1655.
  • Kissen, R., Pope, T.W., Grant M., Pickett J.A., Rossiter J.T. & Powell, G. (2009). Modifying the alkyglucosinolate profile in Arabidopsis thaliana alters the tritrophic interaction with the herbivore Brevicoryne brassicae and parasitoid Diaeretiella rapae Journal of Chemical Ecology 35. 958-969.
  • Pautasso, M. & Powell, G.. (2009). Aphid biodiversity is positively correlated with human population in European countries. Oecologia 160. 839-846.

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