Abstract
Morphological characters of spores of <em>Acaulospora rehmii</em> and <em>Gigaspora margarita</em> (Glomeromycota) were described and illustrated. Spores of the two species were found in field-collected mixtures of rhizosphere soil and roots collected in Poland. Attempts to produce spores in trap cultures succeeded only with <em>G. margarita</em>. All attempts to establish one-species cultures of the two fungi failed. <em>Gigaspora margarita</em> was for the first time found in Poland and this paper is the first report of the occurrence of <em>A. rehmii</em> in Europe. The known distribution of the two fungal species in the world is also presented.
Highlights
Continuing over 20-year studies of the occurrence of arbuscular mycorrhizal fungi of the phylum Glomeromycota, spores of Acaulospora rehmii Sieverd. et S
About 100-g subsamples were taken from each sample to isolate spores of arbuscular mycorrhizal fungal species sporulating in the field
Colour microphotographs of spores and mycorrhizae of A. rehmii and G. margarita can be viewed at the URL http://www.agro.ar.szczecin.pl/~jblaszkowski/
Summary
Continuing over 20-year studies of the occurrence of arbuscular mycorrhizal fungi of the phylum Glomeromycota, spores of Acaulospora rehmii Sieverd. et S. Continuing over 20-year studies of the occurrence of arbuscular mycorrhizal fungi of the phylum Glomeromycota, spores of Acaulospora rehmii Sieverd. Toro and Gigaspora margarita W.N. Becker et I.R. Hall, species earlier not recorded in Europe and Poland, respectively, were found. The aims of this paper are to describe and illustrate morphological characters of spores of A. rehmii and G. margarita and to present the distribution of these fungi in Poland and the other regions of the world
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