Characterization of the host-specific toxins produced byHelminthosporium sacchari,the causal organism of eyespot disease of sugarcane |
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| Authors: | V Macko K Goodfriend T Wachs A A Renwick W Acklin D Arigoni |
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| Institution: | (1) Boyce Thompson Institute, Cornell University, 14853 Ithaca, N.Y., USA;(2) Laboratory for Organic Chemistry, Swiss Federal Institute of Technology Zürich, CH-8092 Zürich, Switzerland;(3) Present address: Department of Chemistry, Cornell University, 14853 Ithaca, N.Y.;(4) Present address: Laboratorium für Organische Chemie, Eidg. Technische Hochschule Zürich, CH-8092 Zürich, Switzerland |
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| Abstract: | Summary Investigation of the host-specific toxin complex fromH. sacchari has led to the isolation of 3 isomeric glycosidic components C39H64O22, each active at 2×10–11 moles. The 3 isomers consist of 4 galactose units linked to an aglycone residue C15H24O2.Acknowledgments. The Boyce Thompson-Cornell group thanks J.F. Rissler, University of Maryland, A.K. Bose, Stevens Institute of Technology, R. Barker and A. Serriani, Cornell University, and C. Grinnalds and J. Golay, Boyce Thompson Institute for help with various aspects of this work. Supported in part by a grant to V.M. from the US Department of Agriculture (8100720). The Zürich group thanks Dr G.A. Strobel, Department of Botany and Microbiology, Montana State University, Bozeman, for supplying a potent toxin-producing strain (M 36), a susceptible clone of sugarcane (51 NG 97), and a reference sample of helminthosporoside, Dr. K. Hostettmann and Mme M. Hostettmann-Kaldas, Pharmazeutisches Institut ETH Zürich, for assistance in developing the DCC separation and Sandoz A.G., Basel, for financial support. |
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