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Acaulospora herrerae, a new pitted species in the Glomeromycetes from Cuba and Brazil

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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.
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Keywords: ARBUSCULAR MYCORRHIZAL FUNGI; CARIBBEAN; DIVERSISPORALES; GLOMEROMYCOTA; SOUTH AMERICA; TAXONOMY; TROPICS

Document Type: Research Article

Publication date: November 1, 2013

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  • Nova Hedwigia is an international journal publishing original, peer-reviewed papers on current issues of taxonomy, morphology, ultrastructure and ecology of all groups of cryptogamic plants, including cyanophytes/cyanobacteria and fungi. The half-tone plates in Nova Hedwigia are known for their high quality, which makes them especially suitable for the reproduction of photomicrographs and scanning and transmission electron micrographs.
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