Zinniol-related phytotoxins from Alternaria cichorii

Andrea Stierle, Joseph Hershenhorn, Gary Strobel

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


The organic extract of the fungus Alternaria cichorii, a pathogen of Russian knapweed, was analysed. A series of zinniol-related compounds with varying degrees of phytotoxicity have been isolated for the first time from the organic extract of a pathogenic fungus. The structures of all of the compounds, which include cichorine, zinniol, and the four novel compounds zinnimidine, Z-hydroxyzinnimidine, zinnol and zinndiol, were determined by spectroscopic methods.

Original languageEnglish
Pages (from-to)1145-1149
Number of pages5
Issue number5
StatePublished - Mar 1993


  • Acroptilon repens
  • Alternaria cichorii
  • Compositae
  • Russian knapweed
  • phytotoxins.
  • zinniol


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