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XYLARIA|apiculata":
2 articles found in Index.
SANTIAGO K.A.A., DELA CRUZ T.E.E., TING A.S.Y. (2021): Diversity and bioactivity of endolichenic fungi in Usnea lichens of the Philippines. [antibacterial, anticandidal, antioxidant, lichen-associated, Sagada.] Czech Mycology 73(1): 1-19 (published: 14th January, 2021) Electronic supplement
abstract
Endolichenic fungi (ELF; asymptomatic microorganisms living inside healthy lichen thalli) were isolated from three Usnea species, namely U. baileyi, U. bismolliuscula and U. pectinata, collected near the town of Sagada, Philippines. A total of 101 ELF were recovered representing 12 genera (classes Sordariomycetes and Eurotiomycetes), with the genera Nemania (50.5%, 51 isolates) and Xylaria (22.8%, 23 isolates) being the most abundant. Comparative analyses on the antimicrobial activities of lichens and ELF revealed that lichen crude extracts were effective against the Gram-positive bacterium Staphylococcus aureus and the yeast Candida albicans, while ELF crude extracts were effective against S. aureus, C. albicans and the Gram-negative bacterium Escherichia coli. The broad-spectrum nature of ELF has provided medicinal and industrial advantages over the slow-growing lichens as shown on their respective bioactivities. Extracts from ELF also had a higher total flavonoid content (TFC; 6.29–85.69 mg QE/g of extract) and stronger antioxidant activities (IC50: 0.57–19.63 mg/ml) than lichen-derived extracts. Although only culturable ELF were identified, this study provides the first evaluation of the diversity and bioactivities of culturable ELF from fruticose lichens of the genus Usnea in the Philippines.
SEIFERT K.A., GAMS W., LOUIS-SEIZE G. (2002): Arthroxylaria elegans, a new coprophilous anamorphic fungus allied with the Xylariaceae, with the notes on the genus Bisporostilbella. [anamorph taxonomy, coprophilous fungi, hyphomycetes, biodiversity] Czech Mycology 53(4): 297-307 (published: 3rd October, 2002)
abstract
The new genus and species Arthroxylaria elegans is described for a synnematous hyphomycete isolated from pack rat dung. The fungus is characterized by the production of tall, lightly pigmented, indeterminate synnemata covered with a layer of unbranched or sparingly branched chains of 0-1-septate meristem arthroconidia. A synanamorph with sympodially-proliferating conidiogenous cells, producing minute aseptate conidia, is also produced. Phylogenetic analyses of partial small subunit ribosomal DNA sequences suggest that the fungus is related to the Xylariaceae, Xylariales, and analysis of internal transcribed spacer sequences places the fungus in Xylaria. The new species is compared with other anamorphs of the Xylariaceae, and a number of similar synnematous and mononematous hyphomycetes, including the poorly understood Bisporostilbella fusca, which is illustrated based on holotype material.
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