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Open Access Septoglomus nigrum, a new arbuscular mycorrhizal fungus from France, Germany and Switzerland

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A new arbuscular mycorrhizal fungus, Septoglomus nigrum, was found in several agricultural field sites in France, Germany and Switzerland, especially in extensively to intensively managed natural meadows and pastures and in extensively managed cropping systems. The fungus was propagated in trap pots and single species cultures on Lolium perenne, Trifolium pratense , Plantago lanceolata and Hieracium pilosella. It differentiates black spores with triple-layered walls, 95–175 x 90–170 μm in diameter, formed singly in soils or rarely in roots. Phylogenetically, it forms a distinct clade close to S. altomontanum and S. africanum, which can morphologically be distinguished from spores of S. nigrum by the characteristics of the spore wall and by the color, size and shape of the subtending hyphae. An identification key is provided that differentiates all species so far described in Septoglomus.

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Keywords: EUROPE; FARMING SYSTEMS; GLOMERACEAE; GLOMERALES; GLOMEROMYCOTA; GRASSLANDS; SOIL; TILLAGE

Document Type: Research Article

Publication date: August 1, 2019

This article was made available online on March 20, 2019 as a Fast Track article with title: "Septoglomus nigrum, a new arbuscular mycorrhizal fungus from France, Germany and Switzerland".

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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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