Lipoxygenase inhibitors shift the yeast/mycelium dimorphism in Ceratocystis ulmi

E. C. Jensen, C. Ogg, K. W. Nickerson

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The yeast-mycelium dimorphism in Ceratocystis ulmi, the causative agent of Dutch elm disease, was switched by gossypol, nordihydroguaiaretic acid, and propylgallate. In each case the mycelial form was converted to the yeast form. These compounds are recognized lipoxygenase inhibitors. Inhibitors of cyclooxygenase and thromboxane synthetase did not cause mycelia to shift to the yeast form. We suggest the following two-part hypothesis: (i) that lipoxygenase is a target for antifungal antibiotics and (ii) that many phytoalexins (antimicrobial compounds of plant origin) are targeted toward fungal lipoxygenases. In addition, in a study to determine potential lipoxygenase substrates, a fatty acid analysis indicated that C. ulmi conidiospores contained high levels of oleic, linoleic, and linolenic acids but no arachidonic acid.

Original languageEnglish (US)
Pages (from-to)2505-2508
Number of pages4
JournalApplied and environmental microbiology
Volume58
Issue number8
StatePublished - Jan 1 1992

Fingerprint

Ulmus
Ceratocystis ulmi
Lipoxygenase Inhibitors
Mycelium
dimorphism
lipoxygenase
mycelium
yeast
inhibitor
Lipoxygenase
Yeasts
yeasts
acid
Linolenic Acids
Lipoxygenases
Thromboxane-A Synthase
Masoprocol
Dutch disease
Gossypol
Oleic Acids

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Applied Microbiology and Biotechnology
  • Ecology

Cite this

Lipoxygenase inhibitors shift the yeast/mycelium dimorphism in Ceratocystis ulmi. / Jensen, E. C.; Ogg, C.; Nickerson, K. W.

In: Applied and environmental microbiology, Vol. 58, No. 8, 01.01.1992, p. 2505-2508.

Research output: Contribution to journalArticle

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