scholarly journals Glomus claroideum and G. spurcum, arbuscular mycorrhizal fungi (Glomeromycota) new for Poland and Europe, respectively

2011 ◽  
Vol 72 (2) ◽  
pp. 149-156 ◽  
Author(s):  
Janusz Błaszkowski ◽  
Iwona Adamska ◽  
Beata Czerniawska

The ontogenetic development and morphological properties of spores of two species of arbuscular mycorrhizal fungi (Glomeromycota) of the genus <em>Glomus</em>, <em>G. claroideum </em>and <em>G. spurcum</em>, are described and illustrated. Spores of the two species were not earlier found in Poland, and this paper is the first report of the occurrence of <em>G. spurcum </em>in Europe. In one-species pot cultures with <em>Plantago lanceolata </em>as the host plant, the mycorrhizae of <em>G. claroideum </em>consist of arbuscules, vesicles, as well as intra- and extraradical hyphae staining intensively with trypan blue. <em>Glomus spurcum </em>mycorrhizae were not recognized, because many attempts to establish one-species cultures of this fungus failed. Additionally, the distribution of both the fungi in the world is presented.

2011 ◽  
Vol 80 (1) ◽  
pp. 63-76 ◽  
Author(s):  
Janusz Błaszkowski ◽  
Beata Czerniawska

155 rhizosphere soil and root mixtures were collected from under <em>Ammophila arenaria </em>colonizing maritime dunes of the island Bornholm (Denmark) to determine arbuscular mycorrhizal fungi (AMF) of the phylum Glomeromycota co-existing with this plant. In the laboratory, each mixture was divided into two parts. One part was used to establish a pot culture with <em>Plantago lanceolata</em> as the host plant to initiate sporulation of fungi that had not produced spores in field conditions. In the second part, the numerical and species composition of the spore populations of AMF sporulating in the field was determined. Spores of AMF were found in 70 field-collected samples and 134 trap cultures. They represented 26 species and six undescribed morphotypes in six genera of the Glomeromycota. Of them, 20 species and three morphotypes in five genera occurred in the field, and 16 species and three morphotypes in five genera were found in trap cultures. The fungi most frequently revealed were members of the genus <em>Glomus</em>; a total of 17 species and six morphotypes of this genus were recognized. Considering the occurrence of spores in both field samples and trap cultures, the fungi most frequently co-occurring with roots of <em>A. arenaria </em>growing in the dunes of Bornholm were <em>G. irregulare </em>(present in 73.6% of samples), followed by <em>Scutellospora dipurpurescens </em>(19.4%) and <em>Archaeospora trappei </em>(10.3%). However, <em>Glomus irregulare </em>mainly sporulated in trap cultures; spores of this fungus were found in only 0.6% of field samples. Other relatively frequently found species were <em>G. aggregatum </em>(9.0%), <em>G. eburneum </em>(7.1%), <em>Paraglomus laccatum </em>(5.2%), and <em>S. armeniaca </em>(6.5%). The species most abundantly sporulating in the field were <em>G. aggregatum </em>(produced 28.36% of all spores isolated), <em>G. badium</em> (11.00%), and <em>S. dipurpurescens </em>(21.55%).


2021 ◽  
Vol 134 ◽  
pp. 187-196
Author(s):  
M.J. Salomon ◽  
S.J. Watts-Williams ◽  
M.J. McLaughlin ◽  
C.J. Brien ◽  
N. Jewell ◽  
...  

2005 ◽  
Vol 71 (11) ◽  
pp. 6673-6679 ◽  
Author(s):  
David Roesti ◽  
Kurt Ineichen ◽  
Olivier Braissant ◽  
Dirk Redecker ◽  
Andres Wiemken ◽  
...  

ABSTRACT Spores of the arbuscular mycorrhizal fungi (AMF) Glomus geosporum and Glomus constrictum were harvested from single-spore-derived pot cultures with either Plantago lanceolata or Hieracium pilosella as host plants. PCR-denaturing gradient gel electrophoresis analysis revealed that the bacterial communities associated with the spores depended more on AMF than host plant identity. The composition of the bacterial populations linked to the spores could be predominantly influenced by a specific spore wall composition or AMF exudate rather than by specific root exudates. The majority of the bacterial sequences that were common to both G. geosporum and G. constrictum spores were affiliated with taxonomic groups known to degrade biopolymers (Cellvibrio, Chondromyces, Flexibacter, Lysobacter, and Pseudomonas). Scanning electron microscopy of G. geosporum spores revealed that these bacteria are possibly feeding on the outer hyaline spore layer. The process of maturation and eventual germination of AMF spores might then benefit from the activity of the surface microorganisms degrading the outer hyaline wall layer.


Science ◽  
2017 ◽  
Vol 356 (6343) ◽  
pp. 1175-1178 ◽  
Author(s):  
Leonie H. Luginbuehl ◽  
Guillaume N. Menard ◽  
Smita Kurup ◽  
Harrie Van Erp ◽  
Guru V. Radhakrishnan ◽  
...  

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