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![Dacrymyces dictyosporus : a . Multiseptate basidiospore (transverse and longitudinal septa). b . Detail of spore wall and septum [coriotunic a = CTa, coriotunic b = CTb, endosporium = EnS, episporium = EpS, transverse septum = TS, longitudinal septum = LS]. c . Detail of a multiseptate basidiospore; only transverse septum [TS] and spore wall with 4 layers [coriotunic a = CTa, coriotunic b = CTb, endosporium = EnS, episporium = EpS, pore = P]. d . Uniseptate basidiospore. e . Detail of septal wall [pore = P, pore aperture = Pa]. Bars: a = 5 μm; b–d = 2 μm; e = 1 μm.](profile/Sigfrido-Sierra/publication/271197701/figure/fig2/AS:295108881731597@1447370848994/Dacrymyces-dictyosporus-a-Multiseptate-basidiospore-transverse-and-longitudinal.png)
Dacrymyces dictyosporus : a . Multiseptate basidiospore (transverse and longitudinal septa). b . Detail of spore wall and septum [coriotunic a = CTa, coriotunic b = CTb, endosporium = EnS, episporium = EpS, transverse septum = TS, longitudinal septum = LS]. c . Detail of a multiseptate basidiospore; only transverse septum [TS] and spore wall with 4 layers [coriotunic a = CTa, coriotunic b = CTb, endosporium = EnS, episporium = EpS, pore = P]. d . Uniseptate basidiospore. e . Detail of septal wall [pore = P, pore aperture = Pa]. Bars: a = 5 μm; b–d = 2 μm; e = 1 μm.
Source publication
An ultrastructural study was made of basidiospores from nine species of Dacrymycetales: Calocera macrospora, C. viscosa, Dacrymyces dictyosporus, D. chrysospermus, Dacryopinax elegans, Da. spathularia, Da. lowyi, Guepiniopsis alpina, and G. buccina. Spore walls and septa analyzed with transmission electron microscopy revealed the absence or presenc...
Citations
... Distribución: es una especie con amplia distribución mundial (McNabb, 1965). En México ha sido reportada en Veracruz (Welden y Lemke, 1961), Ciudad de México (Lowy, 1965), Oaxaca (Guzmán, 1983), Sonora (Esqueda-Valle et al., 1995), Querétaro (Sierra, 2000), Tamaulipas (García-Jiménez y Valenzuela, 2005), Quintana Roo (Pompa- Gon-zález et al., 2011), Guerrero (Salinas-Salgado et al., 2012, Campeche (Sierra et al., 2012) y Nayarit (Sierra et al., 2013). ...
Antecedentes y Objetivos:
Los manglares proporcionan beneficios ecológicos y económicos. Además, albergan una alta diversidad de organismos dentro de los cuales están los hongos, que por su versatilidad proliferan tanto en restos vegetales como en la vegetación viviente en estos ecosistemas. No obstante su importancia, el conocimiento micológico en los manglares mexicanos es aún escaso. El objetivo central del presente trabajo es aportar información sobre la riqueza fúngica asociada a Rhizophora mangle, una de las especies arbóreas dominantes en los manglares del Caribe Mexicano.
Métodos:
Durante el año 2019 se recolectaron ejemplares fúngicos desarrollándose en ramas vivas y muertas, troncos caídos, raíces y hojarasca. Las colectas se efectuaron en manchones con poblaciones de R. mangle en la Reserva de la Biosfera Isla de Cozumel. La determinación taxonómica se llevó a cabo de acuerdo con las técnicas tradicionales en micología. Los ejemplares están depositados en el herbario de la Universidad Veracruzana (XALU) y en la colección de hongos de la Escuela Nacional de Ciencias Biológicas (ENCB).
Resultados clave:
Se determinaron 20 especies de hongos sobre diferentes estructuras de R. mangle. Se presentan 19 nuevos registros para la Isla de Cozumel, mientras que Arthonia conferta, Halorosellinia oceanica, Phyllosticta capitalensis, Pseudocamarosporium propinquum y Chaetosphaerella fusca son nuevos registros para México. La clase Arthoniomycetes presentó la mayor riqueza taxonómica. Los sustratos con mayor riqueza y abundancia fueron las cortezas de ramas.
Conclusiones:
La comunidad de hongos asociados a R. mangle está dominada por ascomicetos. Los hábitos mejor representados son saprobios lignícolas y liquenizados epífitos.
... In the case of Dacrymycetes, most inventories usually include taxa from this group, but relatively few studies focused exclusively on them. In a study of the ultrastructure of the basidiospores in some Dacrymycetales in Mexico, Sierra et al. (2013) effectively differentiated among taxa using the presence or absence of septum pores and the number of layers in the walls of the basidiospores. ...
The class Dacrymycetes has been considered a monophyletic group based on shared morphological characteristics and recent molecular studies, with bifurcate basidia and non perforate parenthosome as synapomorphies. In this review of the state of knowledge for Dacrymycetes (dacrymycetoid fungi) in Mexico, a detailed survey of the literature revealed 21 species in eight genera in Mexico; 20 belong to seven genera of Dacrymycetaceae and one species belongs to the Cerinomycetaceae. The best-represented genus is Dacrymyces, and the most-recorded species is Dacryopinax spathularia. Taxa of Dacrymycetes in Mexico have been recorded from 22 states, mainly those located in central Mexico. The members of this group recorded in Mexico are, apparently, wood-decomposers and have been most frequently collected during the wet season (end of May to beginning of October), but they can be found throughout the year. From the review, it is evident that systematic and biogeographic knowledge on the Dacrymycetes in Mexico is scarce. Thus, more extensive sampling and detailed systematic and molecular studies are needed.
