Abstract
The fungal maize pathogen Cochliobolus heterostrophus (anamorph: Helminthosporium maydis) exists as two pathotypes: race T, which produces T-toxin and race O, which does not. All race T isolates are highly virulent on maize with Texas male sterile cytoplasm; race O isolates are weakly virulent. On maize lines lacking T-cytoplasm, the virulence of races T and O is comparable. Crosses between isolates of races T and O have demonstrated that T-toxin production is determined by a single locus, Tox1. TOX1 progeny produce T-toxin and are highly virulent on T-cytoplasm maize; tox1 progeny do not produce T-toxin and are weakly virulent. Dominance of the TOX1 allele has been established by hetero-karyon analysis (Leach et al, 1982).
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© 1989 Springer-Verlag Berlin Heidelberg
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Turgeon, B.G., Ciuffetti, L., Schafer, W., Yoder, O.C. (1989). A Molecular Strategy for Isolation of the TOXl Allele from Cochliobolus Heterostrophus . In: Graniti, A., Durbin, R.D., Ballio, A. (eds) Phytotoxins and Plant Pathogenesis. NATO ASI Series, vol 27. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-73178-5_43
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DOI: https://doi.org/10.1007/978-3-642-73178-5_43
Publisher Name: Springer, Berlin, Heidelberg
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