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Discontinuous distribution of fumonisin biosynthetic genes in the Gibberella fujikuroi species complex

Published online by Cambridge University Press:  05 August 2004

Robert H. PROCTOR ,
Ronald D. PLATTNER ,
Daren W. BROWN ,
Jeong-Ah SEO  and
Yin-Won LEE
Robert H. PROCTOR
Affiliation:
USDA Agriculture Research Service, National Center for Agricultural Utilization Research, 1815 North University Street, Peoria, IL 61604-3999, USA. E-mail: [email protected]
Ronald D. PLATTNER
Affiliation:
USDA Agriculture Research Service, National Center for Agricultural Utilization Research, 1815 North University Street, Peoria, IL 61604-3999, USA. E-mail: [email protected]
Daren W. BROWN
Affiliation:
USDA Agriculture Research Service, National Center for Agricultural Utilization Research, 1815 North University Street, Peoria, IL 61604-3999, USA. E-mail: [email protected]
Jeong-Ah SEO
Affiliation:
USDA Agriculture Research Service, National Center for Agricultural Utilization Research, 1815 North University Street, Peoria, IL 61604-3999, USA. E-mail: [email protected] Present address: Food Research Institute, University of Wisconsin, Madison, WI 53706-1187, USA.
Yin-Won LEE
Affiliation:
School of Agricultural Biotechnology, Seoul National University, Seoul 151-742, Korea.
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Abstract

Production of the carcinogenic mycotoxins fumonisins has been reported in several Fusarium species, most of which are members of the Gibberella fujikuroi (Gf) complex. In this study, we examined 15 Fusarium species in the Gf complex and 12 other species for fumonisin production and the presence of fumonisin biosynthetic genes (FUM). Among the species within the Gf complex, fumonisin production was detected only in F. fujikuroi, F. globosum, F. proliferatum, F. nygamai, F. oxysporum and F. verticillioides. These five species include members of two of the three major clades delineated in the Gf complex. The FUM genes were detected in these same five species and in F. anthophilum, a member of the third clade. Among the species outside the Gf complex, fumonisin production and FUM genes were detected only in F. oxysporum. Phylogenetic analyses of nucleotide sequences from two FUM gene fragments inferred relationships similar but not identical to those inferred from previous analyses of other genes. The results indicate the FUM genes are discontinuously distributed in the Gf complex and that this distribution gives rise to the differences in the abilities of closely related Fusarium species to produce fumonisins.

Type
Research Article
Information
Mycological Research , Volume 108 , Issue 7 , July 2004 , pp. 815 - 822
Copyright
© The British Mycological Society 2004

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Footnotes

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