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Herbicidal Metabolites from a Soil-Dwelling Fungus (Scopulariopis brumptii)

Published online by Cambridge University Press:  12 June 2017

Jamin Huang
Affiliation:
Plant Biol., Rhone Poulenc Ag Co., Research Triangle Park, NC 27709
Alan R. Putnam
Affiliation:
Dep. Hortic. and Pestic. Res. Ctr., Michigan State Univ., East Lansing, MI 48824
Georgina M. Werner
Affiliation:
Plant Biol., Rhone Poulenc Ag Co., Research Triangle Park, NC 27709
Saroj K. Mishra
Affiliation:
Dep. Hortic. and Pestic. Res. Ctr., Michigan State Univ., East Lansing, MI 48824
Curt Whitenack
Affiliation:
Dep. Hortic. and Pestic. Res. Ctr., Michigan State Univ., East Lansing, MI 48824

Abstract

The fungus Scopulariopis brumptii Salvanet-Duval (MSU 42018) was isolated from a soil sample collected from the rhizosphere of a potted asparagus plant. When cultured 7 days in A-9 broth medium, the organism produced compounds phytotoxic to seeding dicotyledonous weeds (via foliar application) and to Chlamydomonas reinhardtii Dangeard. Three herbicidal metabolites, 3-hydroxybenzyl alcohol, 2-methylhydroquinone, and (+)-epiepoformin, were isolated by column and thin-layer chromatography (TLC) and structures confirmed by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic reasonance spectroscopy (NMR), and mass spectrometry (MS). Of the three compounds, (+)-epiepoformin was the most active, providing complete control of redroot pigweed and 88% control of white mustard when applied at 4.4 kg/ha.

Type
Special Topics
Copyright
Copyright © 1989 by the Weed Science Society of America 

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