Institution: | (1) Department of Biochemistry, The University, DD1 4HN Dundee, Scotland, UK;(2) Cell and Molecular Genetics Department, Scottish Crop Research Institute, DD2 5DA Invergowrie, Dundee, Scotland, UK;(3) Present address: Department of Molecular Biology and Genetics, University of Guelph, N1G 2W1 Guelph, Ontario, Canada |