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

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 t...

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Bibliographic Details
Published in:Weed science 1989-01, Vol.37 (1), p.123-128
Main Authors: Huang, Jamin, Putnam, Alan R., Werner, Georgina M., Mishra, Saroj K., Whitenack, Curt
Format: Article
Language:English
Subjects:
2-methylhydroquinone
3-hydroxy-benzyl alcohol
action spectra
Alcohols
bioassays
Biological and medical sciences
biological control agents
Biological control and other methods
Chlamydomonas reinhardtii
Chromatic substances
epiepoformin
Ethers
Fundamental and applied biological sciences. Psychology
Fungi
herbicide structure and activity
Herbicides
Hexanes
Hydroquinones
Metabolites
Mustards
Parasitic plants. Weeds
Phytopathology. Animal pests. Plant and forest protection
phytotoxins
plant extracts
Scopulariopsis
Scopulariopsis brumptii
soil fungi
soil microorganisms
Special Topics
Toxins
weed susceptibility lists
Weeds
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Summary: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.
ISSN:0043-1745
1550-2759
DOI:10.1017/S004317450005596X