Xylariaceae fimícolas: Xylaria equina sp. nov. y nuevos registros mexicanos de Xylaria pileiformis y Poronia erici

Identification and comparison of Xylaria curta and Xylaria sp. from Western Ghats-Courtallum Hills, India

New Records of Xylaria Species in Korea: X. ripicola sp. nov. and X. tentaculata.

During a Korean mushroom diversity survey from 2011 to 2014, we found one new Xylaria species (X. ripicola sp. nov.) and one Xylaria species that had not been previously observed in Korea (X. tentaculata). To confirm the phylogenetic placement of the new species, we conducted a phylogenetic investigation based on internal transcribed spacer regions of ribosomal DNA sequences. Additionally, the ...

Effect of Culture Conditions on Metabolite Production of Xylaria sp.

Seeking a strategy for triggering the cryptic natural product biosynthesis to yield novel compounds in the plant-associated fungus Xylaria sp., the effect of culture conditions on metabolite production was investigated. A shift in the production of five known cytochalasin-type analogues 1-5 to six new α-pyrone derivatives, xylapyrones A-F (compounds 6-11), from a solid to a liquid medium was ob...

Two new secondary metabolites from Xylaria sp. cfcc 87468.

A new isocoumarin glycoside, 3R-(+)-5-O-[6'-O-acetyl]-α-D-glucopyranosyl-5-hydroxymellein (1), and a new phenylethanol glycoside, (-)-phenylethyl-8-O-α-L-rhamno-pyranoside (2), were isolated from the ethyl acetate extract of the fungus Xylaria sp. cfcc 87468, together with five known steroids, β-sitosterol (3), stigmast-4-en-3-one (4), ergosterol (5), (22E)-cholesta-4,6,8(14),22-tetraen-3-one (...

Internet como fuente de información léxica: extracción de etiquetas de dominio y detección de nuevos sentidos

Resumen Describimos un algoritmo que combina información léxica (extráıda de WordNet 1.6) con información en Internet (directorios de Altavista) para caracterizar automáticamente los sentidos de una palabra con etiquetas de dominio y, al mismo tiempo, detectar y describir nuevos sentidos relevantes en Internet. Esta información puede utilizarse, entre otras cosas, para enriquecer bases de datos...