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Type: Journal article
Title: Manganese-oxidizing ability of isolates of the take-all fungus is correlated with virulence
Author: Pedler, Judith F.
Webb, Michael J.
Buchhorn, S. C.
Graham, Robin David
Citation: Biology and Fertility of Soils, 1996; 22(3):272-278
Publisher: Springer-Verlag
Issue Date: 1996
ISSN: 0178-2762
Statement of
J. F. Pedler, M. J. Webb, S. C. Buchhorn and R. D. Graham
Abstract: Two successive experiments described here show that the Mn-oxidizing ability of isolates of the take-all fungus Gaeumannomyces graminis var. tritici is positively correlated with the isolate virulence. Isolates of G. graminis var. tritici were screened for virulence on wheat in soil culture pot tests and visually scored for Mn-oxidizing capacity on agar plates. A comparison between experiments showed that the Mn-oxidizing ability of an isolate may be attenuated, as is virulence, with subculturing. Using a solution culture system, we calculated the rate of oxidation of Mn2+ by a virulent isolate, Ggt 500, as 4 nmol g-1 (dry weight hyphae) h-1. The significance of these results to the epidemiology of the take-all disease of wheat is discussed.
Keywords: Take all; Manganese oxidation; Virulence; Wheat; Gaeumannomyces graminis var. tritici; Epidemiology
Rights: © Springer-Verlag 1996
DOI: 10.1007/BF00382524
Appears in Collections:Agriculture, Food and Wine publications

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