Affiliation: | Unit of Plant Transport Processes, Department of Cellular and Environmental Physiology, Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, UK;School of Biological and Molecular Sciences, Oxford Brookes University, Gypsy Lane, Oxford OX3 0BP, UK;Department of Biological Sciences, University of Durham, South Road, Durham DH1 3LE, UK |