Root trait responses to soil physical conditions, including changes in border cell production, exudate production, changes in root meristem and overall root structure.
Variation in responses to physical constraints between barley mutants and cultivars.
Genetic controls of border cell production.
Utilisation of confocal microscopy and computer vision techniques to develop tools for measuring cell expansion and root elongation.
Movement, replication and suppression of Tobacco mosaic virus and Tobacco rattle virus in tobacco and Arabidopsis. Utilisation of Tobacco rattle virus as a vector for inducing gene silencing of endogenous root development genes (Mylnefield Research Services).
Growth and development effects of cell wall carbohydrates (University College London).
Bengough, A.G., Hans, J., Bransby, M.F., and Valentine, T.A. 2009. PIV as a method for quantifying root cell growth and particle displacement in confocal images. Microscopy Research and Technique (in press).
Roberts, T.J., McKenna, S.J., Du, C.J., Wuyts, N., Valentine, T.A., and Bengough, A.G. 2009. Estimating the motion of plant root cells from in vivo confocal laser scanning microscopy images. Machine Vision and Applications. (doi: 10.1007/s00138-009-0207-x)
Valentine, T.A., Randall, E., Wypijewski, K., Chapman, S., Jones, J.T., and Oparka, K.J. 2007. Delivery of macromolecules to plant parasitic nematodes using a tobacco rattle virus vector. Plant Biotechnology Journal 5, 827-834.
Bengough, A.G., Bransby, M.F., Hans, J., McKenna, S.J., Roberts, T.J., and Valentine, T.A. 2006. Root responses to soil physical conditions; growth dynamics from field to cell. Journal of Experimental Botany 57, 437-447.
Valentine, T.A., Shaw, J., Blok, V.C., Phillips, M.S., Oparka, K.J., and Lacomme, C. 2005. Efficient virus-induced gene silencing in roots using a modified tobacco rattle virus vector. Plant Physiology 136, 3999-4009.
Humphris, S.N., Bengough, A.G., Griffiths, B.S., Killham, K., Rodger, S., Stubbs, V., Valentine, T.A., and Young, I.M. 2005. Root cap influences root colonisation by Pseudomonas fluorescens SBW25 on maize. FEMS Microbiology Ecology 54, 123-130.
Valentine, T.A., Roberts, I.M., and Oparka, K.J. 2002. Inhibition of tobacco mosaic virus (TMV) in lateral roots is dependant on the propagation of a meristem-derived signal. Protoplasma 219, 184-196.
Gillespie, T., Boevink, P., Haupt, S., Roberts, A.G., Toth, R., Valentine, T.A., Chapman, S.N., and Oparka, K.J. 2002. Functional analysis of a DNA-shuffled movement protein reveals that microtubules are dispensable for the cell-to-cell movement of tobacco mosaic virus. Plant Cell 14, 1207-1222.