Institution: | 1. Institute of Plant Biochemistry, Research Centre for Molecular Biology and Medicine of the Academy of Sciences of the G.D.R., G.D.R.-401 Halle/Saale, Weinberg, German Democratic Republic;2. Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K.;3. Research Institute for Botany of the Hungarian Academy of Sciences, 2163 Vácrátót, Hungary |