Alteichin: an unusual phytotoxin fromAlternaria eichorniae,a fungal pathogen of water hyacinth |
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| Authors: | D Robeson G Strobel G K Matusumoto E L Fisher M H Chen J Clardy |
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| Institution: | (1) Plant Pathology Department, Montana State University, 59717 Bozeman, Montana, USA;(2) Department of Chemistry, Baker Laboratory, Cornell University, 14853 Ithaca, New York, USA;(3) Present address: ARCO Plant Cell Research Institute, 6560 Trinity Court, 94568 Dublin, CA |
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| Abstract: | Summary The phytopathogenic fungusAlternaria eichorniae attacks water hyacinth, an economically significant aquatic weed. The novel phytotoxin alteichin was isolated from liquid cultures of this fungus and its structure was deduced by X-ray crystallographic analysis. Altheichin is a doubly hydrated form of 4,9-dihydroxy perylene-3,10-quinone. A single step dehydration of alteichin to anhydroalteichin is catalyzed both by acid and by a crude enzyme preparation from water hyacinth.We thank Dr R. N. Strange for the protoplast assay. Funding was provided by BARD 1-31-79, NIH-CA 24487, Bristol Laboratories, the Montana Agricultural Expt. Station, and NSF. |
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| Keywords: | Fungus phytopathogenic Alternaria eichorniae phytotoxins altheichin |
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