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Blaszkowski J.,West Pomeranian University of Technology | Furrazola E.,Institute Ecologia e Sistematica | Chwat G.,West Pomeranian University of Technology | Goralska A.,West Pomeranian University of Technology | And 2 more authors.
Mycological Progress | Year: 2015

Morphological observations of spores and mycorrhizal structures of three arbuscular mycorrhizal fungi (Glomeromycota) prompted, and subsequent phylogenetic analyses of SSU–ITS–LSU nrDNA sequences confirmed, that they are undescribed species of the genus Diversispora. Morphologically, the first species, here named D. varaderana, is most distinguished by its relatively small (≤90 μm diam when globose) and yellow-coloured spores with a simple spore wall consisting of two layers, of which layer 1, forming the spore surface, is short-lived and usually completely sloughed in most spores. The distinctive features of the second species, D. peridiata, are the occasional formation of spores in clusters and peridium-like hyphae covering the clusters and single spores, and especially the permanent and relatively thick spore wall layer 1, which is the only coloured component of the two-layered spore wall of the yellow-coloured and relatively small spores (≤100 μm diam). The third species, D. slowinskiensis, is most characterized by its spore wall layer 1 that is the only coloured component of the three-layered spore wall and frequently is covered with blister-like swellings. All the three species were grown in single-species cultures established from spores extracted from trap cultures inoculated with rhizosphere soils of plants growing in maritime sand dunes: D. varaderana from those located near Varadero on the Hicacos Peninsula, Cuba, and the two others from those of the Słowiński National Park, northern Poland. © 2015, German Mycological Society and Springer-Verlag Berlin Heidelberg.

Furrazola E.,Institute Ecologia e Sistematica | Tomio Goto B.,Federal University of Rio Grande do Norte | Alves da Silva G.,Federal University of Pernambuco | Torres-Arias Y.,Institute Ecologia e Sistematica | And 6 more authors.
Nova Hedwigia | Year: 2013

A new Acaulospora species was isolated from the rhizosphere of Panicum maximum, Sporobolus indicus and Byrsonima crassifolia of a calcareous soil in Bayamo (Cuba). It was successfully propagated in single species cultures obtained after inoculation with multiple spores on Bracharia decumbens and Sorghum vulgare, respectively. It was also detected in several natural and agricultural sites in Northeastern Brazil. The spores are brown-yellow to yellowish brown, (50-)70-95(-112) μm in diam., and have a diagnostic pitted ornamentation on the outer surface of the structural wall layer. The pits are rounded, elliptical to elongated (vermiform or rugulate), and uniformly distributed leaving narrow bridges that regularly give the impression of a raised reticulum. Partial sequences of the LSU rRNA gene confirm the new fungus in a well separated, monophyletic clade within the Acaulosporaceae. The new fungus is here presented under the epithet Acaulospora herrerae in honor to Dr. Ricardo Herrera-Peraza, a highly appreciated former mycorrhizologist from La Habana, Cuba. © 2013 J. Cramer in Gebr.

Goto B.T.,Federal University of Rio Grande do Norte | Jardim J.G.,Federal University of Rio Grande do Norte | Da Silva G.A.,Federal University of Pernambuco | Furrazola E.,Institute Ecologia e Sistematica | And 2 more authors.
Mycotaxon | Year: 2012

Glomus trufemii, which forms large aggregates (≤ 850 × 1200 μm) in the rhizosphere of a herbaceous plant community in NE Brazilian sand dunes, is described as new. Its subglobose glomerospores measuring 72-92 × 79-105 μm have two spore wall layers: an evanescent hyaline 0.3-0.8 μm thick outer layer and a laminate orange brown to dark red brown 7.4-15.5 μm thick inner layer. The pigmentation of the subtending hypha is similar but often much lighter than that of the laminate spore wall layer. The spore size and color, spore wall structure, and features of the spore base and subtending hyphae separate this species from similar yellow-brown to brown spored species like G. badium, G. glomerulatum, and G. brohultii. © 2012. Mycotaxon, Ltd.

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