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Metabolism of benzoxazolinone allelochemicals of Zea mays by Fusarium subglutinans

Published online by Cambridge University Press:  01 December 1999

VIVIAN VILICH
Affiliation:
University of Bonn, Institute for Plant Diseases, Soil Ecosystem Pathology, Nussallee 9, 53115 Bonn, Germany
BRITTA LÖHNDORF
Affiliation:
University of Bonn, Institute for Plant Diseases, Soil Ecosystem Pathology, Nussallee 9, 53115 Bonn, Germany
RICHARD A. SIKORA
Affiliation:
University of Bonn, Institute for Plant Diseases, Soil Ecosystem Pathology, Nussallee 9, 53115 Bonn, Germany
ANNETTE FRIEBE
Affiliation:
University of Bonn, Institute of Agricultural Botany, Meckenheimer Allee 176, 53115 Bonn, Germany
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Abstract

The ability of the maize pathogen Fusarium subglutinans to metabolize benzoxazolin-2(3H)-one (BOA) and 6-methoxybenzoxazolin- 2(3H)-one (MBOA), important allelochemicals of Zea mays, was studied. Growth of mycelium was completely inhibited by 10 mM BOA and reduced by lower concentrations. In vitro the fungus completely degraded 1 mM concentrations of BOA and MBOA within 2 d. N-(2-hydroxyphenyl)-malonamic acid and N-(2-hydroxy-4-methoxyphenyl)-malonamic acid were identified as the main degradation products of these allelochemicals.

Type
Research Article
Copyright
© The British Mycological Society 1999

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