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Westerdykella reniformis sp. nov., producing the antibiotic metabolites melinacidin IV and chetracin B.

Ebead GA, Overy DP, Berrué F, Kerr RG - IMA Fungus (2012)

Bottom Line: Westerdykella reniformis Ebead & Overy sp. nov. is described based on morphology and phylogenetic analyses using ITS, nLSU rDNA, and β-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.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Biomedical Sciences, Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave., Charlottetown, PEI, Canada, C1A 4P3;

ABSTRACT
Westerdykella reniformis Ebead & Overy sp. nov. is described based on morphology and phylogenetic analyses using ITS, nLSU rDNA, and β-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.

No MeSH data available.


Related in: MedlinePlus

Macro and micro-morphology of Westerdykella reniformis (RKGE 35 = DAOM 242243). A. Colony grown on oatmeal agar (left) and oatmeal agar with sea salts (right) at 14d. B–C. Ascospores. D–F. Asci.
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Figure 5: Macro and micro-morphology of Westerdykella reniformis (RKGE 35 = DAOM 242243). A. Colony grown on oatmeal agar (left) and oatmeal agar with sea salts (right) at 14d. B–C. Ascospores. D–F. Asci.

Mentions: (Fig. 5)


Westerdykella reniformis sp. nov., producing the antibiotic metabolites melinacidin IV and chetracin B.

Ebead GA, Overy DP, Berrué F, Kerr RG - IMA Fungus (2012)

Macro and micro-morphology of Westerdykella reniformis (RKGE 35 = DAOM 242243). A. Colony grown on oatmeal agar (left) and oatmeal agar with sea salts (right) at 14d. B–C. Ascospores. D–F. Asci.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3539322&req=5

Figure 5: Macro and micro-morphology of Westerdykella reniformis (RKGE 35 = DAOM 242243). A. Colony grown on oatmeal agar (left) and oatmeal agar with sea salts (right) at 14d. B–C. Ascospores. D–F. Asci.
Mentions: (Fig. 5)

Bottom Line: Westerdykella reniformis Ebead & Overy sp. nov. is described based on morphology and phylogenetic analyses using ITS, nLSU rDNA, and β-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.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Biomedical Sciences, Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave., Charlottetown, PEI, Canada, C1A 4P3;

ABSTRACT
Westerdykella reniformis Ebead & Overy sp. nov. is described based on morphology and phylogenetic analyses using ITS, nLSU rDNA, and β-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.

No MeSH data available.


Related in: MedlinePlus