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Isolation and identification of six mansonones fromUlmus americana infected withCeratocystis ulmi

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Summary

Mansonones A and C to G, sesquiterpene quinones possessing antifungal properties, were isolated from the elmUlmus americana infected withCeratocystis ulmi. Scopoletin and β-sitosterol were also present in the extracts. The mansonones were not detected on chromatographic analysis of extracts from healthy elm tissue. The extent to which these antifungal compounds may contribute to resistance to an aggressive strain ofC. ulmi induced inU. americana by a non-aggressive strain of the fungus remains to be determined.

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Authors and Affiliations

  1. Maritimes Forest Research Centre, Canadian Forestry Service, P.O. Box 4000, E3B 5P7, Fredericton, New Brunswick, Canada

    M. T. Dumas, G. M. Strunz, M. Hubbes & R. S. Jeng

  2. Faculty of Forestry, University of Toronto, M5S 1A1, Toronto, Ontario, Canada

    M. T. Dumas, G. M. Strunz, M. Hubbes & R. S. Jeng

Authors
  1. M. T. Dumas
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  2. G. M. Strunz
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  3. M. Hubbes
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  4. R. S. Jeng
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Additional information

We thank P. Giguère, R. Cormier, B. Roze, and D.J. Kelly for technical assistance. M.T.D. is indebted to the Natural Sciences and Engineering Research Council of Canada for financial support. The authors are indebted to L. Calhoun (Univ. New Brunswick) for recording 200 MHz NMR-spectra, and to Professor J.C. Overeem (Utrecht) and Professor G.B. Marini-Bettolo (Rome) for kindly providing some reference spectra and helpful information.

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Dumas, M.T., Strunz, G.M., Hubbes, M. et al. Isolation and identification of six mansonones fromUlmus americana infected withCeratocystis ulmi. Experientia 39, 1089–1090 (1983). https://doi.org/10.1007/BF01943121

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  • DOI: https://doi.org/10.1007/BF01943121

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