Journal
IMA FUNGUS
Volume 3, Issue 2, Pages 189-201Publisher
BMC
DOI: 10.5598/imafungus.2012.03.02.11
Keywords
antimicrobial screening; Ascomycota; ITS phylogeny; multigene phylogeny; Sporormiaceae
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Funding
- Natural Sciences and Engineering Council of Canada (NSERC)
- Canada Research Chair Program
- University of Prince Edward Island
- Atlantic Canada Opportunities Agency - AIF program
- Jeanne and Jean-Louis Levesque Foundation
- Egyptian Cultural and Educational Mission Sector, Ministry of Scientific Research, Egypt
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Westerdykella reniformis Ebead & Overy sp. nov. is described based on morphology and phylogenetic analyses using ITS, nLSU rDNA, and beta-tubulin gene sequences. Westerdykella reniformis is characterized by the production of cleistothecioid ascomata, containing small globose to subglobose asci with 32, aseptate, dark colored, pronouncedly reniform ascospores having a concave central groove. The isolate was obtained from a red alga (Polysiphonia sp.) collected from the tidal zone in Canada at low tide. Organic extracts enriched in extrolites, obtained from fermentation on a rice-based media, inhibited the growth of methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus faecium (VRE), S. warneri, and Proteus vulgaris. Presented here is the identification of the compounds responsible for the observed antimicrobial activity, the taxonomic description of W. reniformis, and a dichotomous key to the known species of Westerdykella based on macro-and micromorphological characters.
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