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The arbuscular mycorrhizal Paraglomus majewskii sp. nov. represents a distinct basal lineage in Glomeromycota.

The arbuscular mycorrhizal Paraglomus majewskii sp. nov. represents a distinct basal lineage in Glomeromycota.

Authors :
Blaszkowski J
Kovács GM
Gáspár BK
Balázs TK
Buscot F
Ryszka P
Source :
Mycologia [Mycologia] 2012 Jan-Feb; Vol. 104 (1), pp. 148-56. Date of Electronic Publication: 2011 Sep 13.
Publication Year :
2012

Abstract

Paraglomus majewskii sp. nov. (Glomeromycota) is described and illustrated. It forms single spores, which are hyaline through their life cycle, globose to subglobose, (35-)63(-78) μm diam, sometimes egg-shaped, 50-70 × 65-90 μm, and have an unusually narrow, (3.2-)4.6(-5.9) μm, cylindrical to slightly flared subtending hypha. The spore wall of P. majewskii consists of an evanescent, short-lived outermost layer, a laminate middle layer, and a flexible innermost layer, which adheres tightly to the middle layer. None of the spore wall layers stain in Melzer's reagent. In single-species cultures with Plantago lanceolata as the host plant P. majewskii formed arbuscular mycorrhizae staining violet in trypan blue. P. majewskii has been isolated from several, distant geographic regions and from different habitats. In phylogenetic analyses of partial nrDNA SSU and LSU sequences the fungus formed mono-phyletic group with Paraglomus species; however it represents a well separated distinct lineage. Its nrDNA sequences are highly similar to in planta arbuscular mycorrhizal fungal sequences from different habitats in Spain and Ecuador.

Details

Language :
English
ISSN :
0027-5514
Volume :
104
Issue :
1
Database :
MEDLINE
Journal :
Mycologia
Publication Type :
Academic Journal
Accession number :
21914831
Full Text :
https://doi.org/10.3852/10-430