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New sources of taxonomic information for earthstars (Geastrum, Geastraceae, Basidiomycota): phenoloxidases and rhizomorphs crystals.

AuthorsZamora, Juan Carlos; Calonge, Francisco D.; Martín, María P. CSIC ORCID
Rhizomorph crystals
Issue Date18-Sep-2013
PublisherMagnolia Press
CitationPhytotaxa 132 (1): 1–20 (2013)
AbstractThe taxonomic utility of two characters not previously used for identification of Geastrum species is evaluated. First, macrochemical spot tests with chemicals detecting phenoloxidase enzymatic activity (1-naphthol, guaiac gum, and syringaldazine), are performed. In addition, the usefulness of the crystalline deposits from the rhizomorphs, formed by calcium oxalate as monohydrate or whewellite, and dihydrate or weddellite, was evaluated. These features provide valuable data to distinguish some taxa difficult to separate using traditional morphology, such as G. lageniforme, G. saccatum, and G. triplex.
DescriptionSe evalúa la utilidad taxonómica de dos caracteres no utilizados previamente para la identificación de especies de Geastrum. Primero, Pruebas macroquímicas de manchas con productos químicos que detectan la actividad enzimática de la fenoloxidasa (1-naftol, goma de guayaco y siringaldazina), se realizan. Además, la utilidad de los depósitos cristalinos de los rizomorfos, formados por Se evaluó el oxalato de calcio como monohidrato o whewellita, y dihidrato o weddellita. Estas características proporcionan datos valiosos para distinguir algunos taxones difíciles de separar utilizando la morfología tradicional, como G. lageniforme, G. saccatum y G. triplex.
Publisher version (URL)http://dx.doi.org/10.11646/phytotaxa.132.1.1
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