Mastigomycotina Developmental Sensitivity to α, β Unsaturated Carbonyl Compounds
Identifieur interne : 001B26 ( Istex/Curation ); précédent : 001B25; suivant : 001B27Mastigomycotina Developmental Sensitivity to α, β Unsaturated Carbonyl Compounds
Auteurs : J. Larsen [Danemark] ; L. Lange [Danemark] ; L. W. Olson [Danemark]Source :
- Journal of Phytopathology [ 0931-1785 ] ; 1992-04.
Abstract
Abstract: Four α, β unsaturated lactones (patulin, penicillic acid, parasorbic acid and tulipalin) and the naphtoquinone plumbagin, all α, β unsaturated carbonyl compounds α, β UCCs), were tested against members of Chytridiomycetes and Oomycetes distributed among the orders: Blastocladiales (Allomyces, 1 isolate), Saprolegniales (Achlya and Dicthyuchus, 1 isolate each), Peronosporales (Pythium, 18 isolates and Phytophthora, 3 isolates). The effect of the α, β UCCs on the development of the various fungi was tested in aqueous solutions. Development of all of the fungi was inhibited by the five α, β UCCs. Patulin and plumbagin were the most effective; the minimal inhibitory concentration (= MIC) was 10 μg/ml and 5 μg/ml, respectively. No variation in the fungi's sensitivity to patulin and plumbagin was observed. There was a large variation in the sensitivity of the fungi to the other three α, β UCCs. Parasorbic acid showed a variation in MIC from < 1 μg/ml to 500 μg/ml depending on the isolate studied. From the fact that all Mastigomycotina developmental stages were inhibited, it appears that the mode of action of α, β UCCs, is in some fundamental process. Zusammenfassung: Entwicklungsempfindlichkeit in Mastigomycotina gegenüber α, β‐ungesättigten Carbonylverbindungen Geprüft wurden vier α, β‐ungesättigte Lactone (Patulin, Penicillinsäure, Parasorbinsaure und Tulipalin) und das Naphtoquinon Plumbagin, alle α, β‐ungesättigte Carbonylverbindungen (α, β ‐ UCCs), gegen Vertreter der Chytridiomycetes und Oomycetes der Klassen: Blastocladiales (Allomyces, 1 Isolat), Saprolegniales (Acblya und Dicthyuchus, je 1 Isolat), Peronosporales (Pytbium, 18 Isolate und Pbytopbtbora, 3 Isolate). Der Einfluß der α, β ‐UCCs auf die Entwicklung der verschiedenen Pilze wurde in wäßrigen Losungen untersucht. Die Entwicklung aller Pilze wurde durch die fünf α, β ‐ UCCs gehemmt. Am wirksamsten waren Patulin und Plumbagin; die minimale Hemmkonzentration (= MIC) lag bei 10 μ/ml bzw. 5 μ/ml. Bei der Empfindlichkeit der Pilzarten gegenüber Patulin und Plumbagin wurden keine Schwankungen beobachtet. Es gab jedoch große Schwankungen in der Empfindlichkeit der Pilzarten gegenüber den anderen drei α, β‐UCCs. Bei der Parasorbinsäure z. B. schwankte der MIC von < 1 μg/ml bis 500 /ig/ml in Abhangigkeit von dem untersuchten Isolat. Daß alle Entwicklungsstadien bei der Mastigomycotina gehemmt wurden, deutet darauf hin, daß der Wirkungsmechanismus der α, β‐UCCs in einem grundiegenden Vorgang liegt.
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DOI: 10.1111/j.1439-0434.1992.tb01242.x
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<front><div type="abstract" xml:lang="en">Abstract: Four α, β unsaturated lactones (patulin, penicillic acid, parasorbic acid and tulipalin) and the naphtoquinone plumbagin, all α, β unsaturated carbonyl compounds α, β UCCs), were tested against members of Chytridiomycetes and Oomycetes distributed among the orders: Blastocladiales (Allomyces, 1 isolate), Saprolegniales (Achlya and Dicthyuchus, 1 isolate each), Peronosporales (Pythium, 18 isolates and Phytophthora, 3 isolates). The effect of the α, β UCCs on the development of the various fungi was tested in aqueous solutions. Development of all of the fungi was inhibited by the five α, β UCCs. Patulin and plumbagin were the most effective; the minimal inhibitory concentration (= MIC) was 10 μg/ml and 5 μg/ml, respectively. No variation in the fungi's sensitivity to patulin and plumbagin was observed. There was a large variation in the sensitivity of the fungi to the other three α, β UCCs. Parasorbic acid showed a variation in MIC from < 1 μg/ml to 500 μg/ml depending on the isolate studied. From the fact that all Mastigomycotina developmental stages were inhibited, it appears that the mode of action of α, β UCCs, is in some fundamental process. Zusammenfassung: Entwicklungsempfindlichkeit in Mastigomycotina gegenüber α, β‐ungesättigten Carbonylverbindungen Geprüft wurden vier α, β‐ungesättigte Lactone (Patulin, Penicillinsäure, Parasorbinsaure und Tulipalin) und das Naphtoquinon Plumbagin, alle α, β‐ungesättigte Carbonylverbindungen (α, β ‐ UCCs), gegen Vertreter der Chytridiomycetes und Oomycetes der Klassen: Blastocladiales (Allomyces, 1 Isolat), Saprolegniales (Acblya und Dicthyuchus, je 1 Isolat), Peronosporales (Pytbium, 18 Isolate und Pbytopbtbora, 3 Isolate). Der Einfluß der α, β ‐UCCs auf die Entwicklung der verschiedenen Pilze wurde in wäßrigen Losungen untersucht. Die Entwicklung aller Pilze wurde durch die fünf α, β ‐ UCCs gehemmt. Am wirksamsten waren Patulin und Plumbagin; die minimale Hemmkonzentration (= MIC) lag bei 10 μ/ml bzw. 5 μ/ml. Bei der Empfindlichkeit der Pilzarten gegenüber Patulin und Plumbagin wurden keine Schwankungen beobachtet. Es gab jedoch große Schwankungen in der Empfindlichkeit der Pilzarten gegenüber den anderen drei α, β‐UCCs. Bei der Parasorbinsäure z. B. schwankte der MIC von < 1 μg/ml bis 500 /ig/ml in Abhangigkeit von dem untersuchten Isolat. Daß alle Entwicklungsstadien bei der Mastigomycotina gehemmt wurden, deutet darauf hin, daß der Wirkungsmechanismus der α, β‐UCCs in einem grundiegenden Vorgang liegt.</div>
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