Factors determining vector competence of the thrips Frankliniella occidentalis for transmitting TSWV Tospovirus
Final Report Abstract
The hereby reported study was launched to unravel the complex and specific interplay between TSWV, the vector thrips Frankliniella occidentalis and their shared host plant Capsicum annuum, by focusing on the contribution of specific factors to the reported variability in the transmission efficiency of the virus within a vector population. Vector’s genetics, gender and life processes as influenced by the virus were evaluated at individual level to determine their contribution to this interaction. In conclusion, the sequence of studies presented here provides a significant contribution for a deeper understanding of the complex but specific interaction between TSWV, F. occidentalis and their shared host plants. Every chapter addresses selected factors of importance that influence this triangle relationship, showing that many factors as well as their interactions contribute either positively or negatively to the TSWV-F. occidentalis-host plant interaction. These complexities of the involved controlling factors can now explain the pronounced variability in transmission efficiency of different F. occidentalis populations in natural systems. Therefore, these findings on vector’s biology, behavior and genetics, as well as the virus manipulated influences on the vector’s life process, can improve the development of precise models and management strategies for both the virus and the vector. From a basic viewpoint, these findings are fundamental for a deeper understanding of the evolutionary interaction of virus-vector-host plant, and an essential basis for further molecular genetic studies of the trait vector competence. From an application point of view, the development of vector–based models could further help in elucidating the role of tri-trophic interactions in such complex disease systems, and stimulate the development of efficient control strategies for both the virus and the vector.
Publications
- (2013). Influence of Tomato spotted wilt virus (tospovirus) on performance and behavioural patterns of western flower thrips (Frankliniella occidentalis). Journal of Applied Entomology 137: 488-498
P.A. Ogada, E.G. Maiss, H.M. Poehling
(See online at https://doi.org/10.1111/jen.12023) - (2015). Sex-specific influences of Frankliniella occidentalis (Western flower thrips) in the transmission of Tomato spotted wilt virus (Tospovirus). Journal of Plant Diseases and Plant Protection 122: 264-274
P.A. Ogada, and H.M. Poehling
(See online at https://doi.org/10.1007/BF03356562) - (2016). A differential proteomics study of Frankliniella occidentalis immune response proteins, after infection with Tomato spotted wilt virus (Tospovirus). Journal of Developmental and Comparative Immunology (Elsevier) 67: 1–7
Ogada, P.A., Kiirika, L.M., Haase, C., Klodmann, J., Braun, H.P., Poehling, H.M.
(See online at https://doi.org/10.1016/j.dci.2016.10.013) - (2016). Manipulation of Frankliniella occidentalis (Thysanoptera: Thripidae) by Tomato spotted wilt virus (Tospovirus) via the host plant nutrients to enhance its transmission and spread. Journal of Environmental Entomology 45 (5): 1235–1242
S. Shalileh, P.A. Ogada, D.P. Moualeu and H.M. Poehling
(See online at https://doi.org/10.1093/ee/nvw102) - (2016). Predictive models for Tomato spotted wilt virus dispersal dynamics, considering Frankliniella occidentalis biology and preferential behaviour as influenced by the virus. PloS One 11 (5):1–20
P.A. Ogada, D.P. Moualeu and H.M. Poehling
(See online at https://doi.org/10.1371/journal.pone.0154533) - (2016). The genetics of vector competence of western flower thrips (Frankliniella occidentalis) in Tomato spotted wilt virus transmission. Ecology and Evolution 6: 7911–7920
P.A. Ogada, T. Debener and H.-M. Poehling
(See online at https://doi.org/10.1002/ece3.2484)
