Fitopatologia Brasileira (2003) 28, 89-92

Virgínia C. de Oliveira and Jefferson L.S. da Costa (2003)
Compatibilidade vegetativa de nit-mutantes de Fusarium solani patogênicos e não-patogênicos ao feijoeiro e à soja
[Nit-mutant vegetative compatibility of Fusarium solani pathogenic and non pathogenic to dry-bean and soybean]
Fitopatologia Brasileira 28 (1), 89-92
Abstract: The purpose of this study was to determine the relatedness 18 isolates of Fusarium solani f. sp. phaseoli and F. solani f. sp. glycines. The majority of these isolates have shown host unspecificity and were pathogenic to dry-bean (Phaseolus vulgaris) and soybean (Glycine max). The vegetative compatibility groups (VCG) of these isolates were determined. The nit-mutants (KClO₃) of each isolate were paired on a NAN0₃ minimal media to verify the heterocariosis formation. Among the 18 isolates of F. solani, 13 were gathered in a single VCG. The nit-mutants strains of isolate F42, f. sp. phaseoli and isolate F46, f. sp. glycines were compatible to each other. Three isolates consisted of single members of different VCGs and one of these isolates was not even incompatible with itself. Vegetative compatibility, therefore, was found among isolates of F. solani f. sp. phaseoli and F. solani f. sp. glycines. This compatibility could be a reason for the existence of isolates pathogenic to both crops.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Soybean sudden death syndrome	Soybean (Glycine max)	Brazil (south)
	Soybean sudden death syndrome	Soybean (Glycine max)	Brazil (NE)
	Neocosmospora phaseoli	Beans (Phaseolus)	Brazil (south)