1. Department of Chemistry; School of Biological and Biomedical Sciences; Durham University; Durham DH1 3LE UK
2. Institute for Cell and Molecular Biosciences; Newcastle University; Newcastle NE2 4HH UK
3. Crop Protection Research; Syngenta Crop Protection AG; Schaffhauserstr. 101 CH-4332 Stein Switzerland
4. Fungicide Biochemistry; Syngenta Ltd; Jealott's Hill Research Station; Bracknell Berkshire RG42 6EY UK