Plant Pathology (2007) 56, 296-301

A. Sellam, B. Iacomi-Vasilescu, P. Hudhomme and P. Simoneau (2007)
In vitro antifungal activity of brassinin, camalexin and two isothiocyanates against the crucifer pathogens Alternaria brassicicola and Alternaria brassicae
Plant Pathology 56 (2), 296-301
Abstract: In vitro assays investigated the responses of Alternaria brassicicola and A. brassicae isolates towards two crucifer phytoalexins and two isothiocyanates (ITC) by evaluating their potential toxic effects on different fungal growth parameters. Although variable responses towards each compound was observed within the species A. brassicicola, the results obtained confirmed the antifungal effects of camalexin, brassinin, allyl- (AlITC) and benzyl- (BzITC) isothiocyanates, at different developmental stages of both Alternaria species. Irrespective of the tested isolate, the phytoalexin camalexin exhibited the greater inhibitory effect with mean EC₅₀ values ranging from 34 µm (germ-tube elongation) to 183 µm (mycelial growth). Germ-tube elongation was more sensitive compared to conidial germination and mycelial growth, with mean EC₅₀ values of the former of 81 µm, 520 µm and 870 µm for brassinin, BzITC and AlITC, respectively.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Philippe Simoneau

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Alternaria brassicae
	Alternaria brassicicola