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Effects of triarimol and tridemorph on sterol biosynthesis inSaprolegnia ferax

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Lipids

Abstract

The effects of two fungicides, triarimol and tridemorph, on sterol biosynthesis inSaprolegnia ferax were examined. Cultures grown in the presence of triarimol accumulated lanosterol. Tridemorph-treated cultures accumulated Δ8-sterols including zymosterol, fecosterol and stigmasta-8-24(28)-dienol. The latter is a new sterol. A proposed scheme is given for sterol biosynthesis inS. ferax showing points of inhibition of triarimol and tridemorph. Results point to the intermediacy of lanosterol but not cycloartenol in sterol synthesis inSaprolegnia.

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Authors and Affiliations

  1. Department of Botany, University of Maryland, 20742, College Park, MD

    Linda R. Berg & Glenn W. Patterson

  2. Insect Physiology Laboratory, Beltsville Agricultural Research Center, 20705, Beltsville, MD

    William R. Lusby

Authors
  1. Linda R. Berg
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  2. Glenn W. Patterson
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  3. William R. Lusby
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Additional information

Scientific article number A3388, Contribution no. 6460 of the Maryland Agricultural Experiment Station.

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Berg, L.R., Patterson, G.W. & Lusby, W.R. Effects of triarimol and tridemorph on sterol biosynthesis inSaprolegnia ferax . Lipids 18, 448–452 (1983). https://doi.org/10.1007/BF02535784

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  • DOI: https://doi.org/10.1007/BF02535784

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