Revision of the genera Agrocybe and Cyclocybe (Strophariaceae, Agaricales, Basidiomycota) in Argentina

Abstract

Agrocybe is characterized by the collybioid to tricholomatoid basidiomata with rusty to dark spore-print, a hymeniform pileipellis, and basidiosspores with a reduced to broad germ-pore. Recently, the species with reduced germ-pore were segregated to Cyclocybe. The knowledge of these genera in Argentina is scanty, although they have been partially studied in the country, but there is not a field that deals exhaustively with it. Macro- and micromorphological characters of specimens obtained in the feld and from different national herbaria (BAFC, CTES, LIL, LPS) were analyzed. Cultivation techniques were used to obtain basidiomata, allowing for a macro- and micromorphological study of fresh developing basidiomes. We concluded that in Argentina there are, so far, 14 species of Agrocybe (one of them with 3 varieties) and two of Cyclocybe including to C. wrightii, which is proposed as a new combination. Sixteen species are described and a key to the Argentinian species of Agrocybe and Cyclocybe is proposed.

Molecular identification and antimicrobial activities of some wild Egyptian mushrooms: Bjerkandera adusta as a promising source of bioactive antimicrobial phenolic compounds

“…Until recently, Niveiro and his coauthor were described the Cyclocybe cylindracea and Agrocybe aegerita as two independent genera which could explain the varied antimicrobial activities and the varied chemical composition of both samples [29]. ITS region sequences of Mush 4 matched the Chlorophyllum molybdites while Mush 5 shows homology to Lentinus squarrosulus.…”

“…6 ). Until recently, Niveiro and his coauthor were described the Cyclocybe cylindracea and Agrocybe aegerita as two independent genera which could explain the varied antimicrobial activities and the varied chemical composition of both samples [ 29 ].…”

Nuevos Registros De Hongos Agaricales (Basidiomycota) Para Las Yungas Bolivianas

“…Agrocybe perfecta es una especie con presencia en Sud América (Coimbra, 2015). Su distribución es conocida para la Argentina en la provincia de Tucumán, Mendoza (Niveiro & Albertó, 2012;Uhart, 2006) y Salta (Niveiro et al, 2020) y para Brasil (Coimbra, 2015;de Meijer, 2006;Watling, 1992) en el estado de Paraná, creciendo sobre estiércol o suelo con hojarasca. Se reporta por primera vez la presencia de esta especie para el departamento de Cochabamba, en las Yungas del Ichilo de Bolivia.…”

“…Años después, Watling (1992) estudió colecciones de Brasil, y Niveiro et al (2020) estudiaron el género en la Argentina, aceptando las combinaciones realizadas por Singer & Digilio (1952) y Singer (1953), quienes diferenciaron A. perfecta de A. platensis. En este estudio, y basándonos en los caracteres morfológicos descritos en la literatura para ambas especies (Spegazzini, 1899;Rick, 1938;Singer & Digilio, 1952;Watling, 1992;Uhart, 2006;Niveiro et al, 2020), consideramos que los caracteres diferenciales descritos anteriormente (basidios 2-4 esporados y pleurocistidios con o sin mucrón), sumado a la superposición de medidas de caracteres importantes (ej. tamaño de esporas y basidios) no son suficientes para separar ambas especies, por lo que se requiere realizar estudios adicionales a nivel molecular y estudios filogenéticos con las especies cercanas, ya que los límites entre ambas especies no son del todo claros, concordando con lo expresado por Niveiro et al (2020).…”

Dung fungi from Brazil: Agrocybe pediades (Fr.) Fayod (Basidiomycota) in Cerrado

“…Agrocybe Fayod is a mushrooms genus belonging to the family Strophariaceae (Basidiomycota: Agaricales), comprising about 100 described species [4,5]. The genus has wide distribution, occurring in natural (forests, on plant debris and soil, sand dunes) or anthropic (gardens, manured soil) areas, being considered as a poorly selective genus in substrate choice [6,7,8]. The fimicolous species of Agrocybe, which grows on dung or heavily manured soils, are poorly recorded, since they are a few species and because they do not develop on moist chambers, as observed in other dung fungi species [9].…”