| Institution: | (1) Department of Plant Sciences, University of Oxford, South Parks Road, OX1 3RB Oxford, UK;(2) Cell Biology Department, IACR-Long Ashton Research Station, University of Bristol, Long Ashton, BS18 9 AF Bristol, UK;(3) Present address: Department of Biological Sciences, Wye College, University of London, Wye, TN25 5AH Ashford, Kent, UK;(4) Present address: Centro Nacional De Biotechnologia, Consejo Superior de Investigaciones Cientificas, Campus Universidad Autonoma, Cantoblanco, Madrid, Spain |
