Bioactivity of secondary metabolites and thallus extracts from lichen fungi |
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| Authors: | Mark Kowalski Georg Hausner Michele D. Piercey-Normore |
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| Affiliation: | (1) Department of Biological Sciences, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada;(2) Department of Microbiology, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada; |
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| Abstract: | Fungal secondary compounds and total extracts are known to affect growth of bacteria, fungi, and plants. This study tested the effects of purified compounds and total extracts from three lichens on the growth of two plant pathogens, Ophiostoma novo-ulmi ssp. americana and Sclerotinia sclerotiorum. Usnic acid showed no reduction in relative growth rates (RGR), whereas vulpinic acid reduced RGR for both fungi and atranorin reduced RGR of S. sclerotiorum only. However, purified vulpinic acid showed stronger effects than total extracts on fungal growth. The results suggest that these lichens show further promise as a source for bioactive compounds against fungi. |
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| Keywords: | Plant pathogen |
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