Antifungal activity of lichen extracts and lichenic acids |
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Authors: | Patrice Halama Chantal Van Haluwin |
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Institution: | (1) Institut Supérieur d' Agriculture, 41 rue du Port, 59046 Lille cedex, France;(2) Faculté des Sciences Biologiques et Pharmaceutiques, 59006 Lille cedex, France |
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Abstract: | Acetone extracts of the threelichen species Evernia prunastri, Hypogymnia physodes and Cladoniaportentosa were investigated for activityagainst eight plant pathogenic fungi: Pythium ultimum, Phytophthorainfestans, Rhizoctonia solani, Botrytis cinerea, Colletotrichumlindemuthianum, Fusarium solani, Stagonospora nodorum and Ustilagomaydis. Particularly, E. prunastriand H. physodes exhibit total or stronginhibition on P. ultimum, U.maydis and P. infestans growth. Incontrast, Cladonia extracts were lessactive to reduce growth of these fungi.Lichenic acids were also examined forantifungal activity. P. infestans growthwas severely inhibited by evernic acid. P.ultimum and P. infestans growth wereslightly but significantly inhibited by evernicacid and (–) usnic acid, respectively. Growthinhibition of U. maydis was also observedfor the latter lichenic acid. These resultsconfirm the previously observed activities oflichen extracts. This suggests that secondarylichen metabolites might be of potential use asantifungal agents. |
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Keywords: | Cladonia portentosa Evernia prunastri growth inhibition Hypogymnia physodes plant pathogenic fungi |
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