Molecular data indicate that Rhytidhysteron rufulum (ascomycetes, Patellariales) in Costa Rica consists of four distinct lineages corroborated by morphological and chemical characters

 

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Detalles Bibliográficos
Autores: Murillo Cruz, Catalina, Albertazzi Castro, Federico José, Carranza Velázquez, Julieta, Lumbsch, Helge Thorsten, Tamayo Castillo, Giselle
Formato: artículo original
Fecha de Publicación:2009
Descripción:Rhytidhysteron rufulum is a poorly known, common, pantropical species, capable of utilizing different substrata and occupying diverse habitats, and is the only species of its genus in Costa Rica. We have employed molecular, morphological, and chemical data to assess the variability and differentiation of R. rufulum in Costa Rica, including sites from the Pacific and Atlantic coast. Phylogenetic analyses of nuclear ITS rDNA sequences revealed the presence of four distinct lineages in the R. rufulum complex. Re-examination of the morphology and anatomy showed differences between these lineages in ascomatal, ascal, and ascospore size that have previously been regarded as intraspecific variations. In addition, there was a correlation between molecular phylogenies and chemical components as determined by hplc and nuclear magnetic resonance (NMR). Two lineages (clades I and II) produced the palmarumycins MK-3018, CJ-12372, and CR1, whereas clade III produced dehydrocurvularin, and clade IV unidentified compounds. Our results based on a polyphasic approach contradict previous taxonomic interpretations of one morphologically variable species.
País:Kérwá
Institución:Universidad de Costa Rica
Repositorio:Kérwá
Lenguaje:Inglés
OAI Identifier:oai:https://www.kerwa.ucr.ac.cr:10669/87917
Acceso en línea:https://www.sciencedirect.com/science/article/pii/S0953756208002190?via%3Dihub#!
https://hdl.handle.net/10669/87917
Access Level:acceso abierto
Palabra clave:Cryptic species
Dehydrocurvularin
hplc
NMR
Palmarumycins
Pseudoepithecium colour
Tropical fungi
SPECIES
BIOLOGICAL DIVERSITY
FUNGI