scholarly journals Attempts to eliminate Oidiodendron minus Barron from the substrate of Agaricus cultures

2014 ◽  
Vol 14 (1-2) ◽  
pp. 119-133
Author(s):  
Wanda Rudnicka-Jezierska ◽  
Ewa Rutkowska
Keyword(s):  
Oidiodendron Maius

Among fungi which destroy <i>Agaricus</i> mycelium <i>Oidiodendron maius</i> Barron turned out to be most dangerous. Several simple experiments aimed at limiting its expansion were performed.

scholarly journals OmZnT1 and OmFET, two metal transporters from the metal-tolerant strain Zn of the ericoid mycorrhizal fungus Oidiodendron maius, confer zinc tolerance in yeast

2013 ◽  
Vol 52 ◽  
pp. 53-64 ◽  
Author(s):  
Hassine Radhouane Khouja ◽  
Simona Abbà ◽  
Laurence Lacercat-Didier ◽  
Stefania Daghino ◽  
Didier Doillon ◽  
...  
Keyword(s):  
Mycorrhizal Fungus ◽  
Metal Transporters ◽  
Zinc Tolerance ◽  
Tolerant Strain ◽  
Oidiodendron Maius ◽  
Ericoid Mycorrhizal Fungus

New perspectives on the niche and holomorph of the myxotrichoid hyphomycete, Oidiodendron maius

2002 ◽  
Vol 106 (12) ◽  
pp. 1463-1467 ◽  
Author(s):  
Adrianne V. Rice ◽  
Randolph S. Currah
Keyword(s):  
Oidiodendron Maius

scholarly journals SOD1-Targeted Gene Disruption in the Ericoid Mycorrhizal Fungus Oidiodendron maius Reduces Conidiation and the Capacity for Mycorrhization

2009 ◽  
Vol 22 (11) ◽  
pp. 1412-1421 ◽  
Author(s):  
S. Abbà ◽  
H. R. Khouja ◽  
E. Martino ◽  
D. B. Archer ◽  
S. Perotto
Keyword(s):  
Mycorrhizal Fungi ◽  
Redox Homeostasis ◽  
Mycorrhizal Fungus ◽  
Stress Markers ◽  
Increased Sensitivity ◽  
Ros Scavenger ◽  
Oidiodendron Maius ◽  
Null Mutants ◽  
Ericoid Mycorrhizal Fungus

The genome sequences of mycorrhizal fungi will provide new opportunities for studying the biology and the evolution underlying this symbiotic lifestyle. The generation of null mutants at the wild-type loci is one of the best methods for gene-function assignment in the post-genomic era. To our knowledge, the generation of superoxide dismutase 1 (SOD1)-null mutants in the ericoid mycorrhizal fungus Oidiodendron maius is the first example of a gene-targeted disruption via homologous recombination in a mycorrhizal fungus. The disruption of OmSOD1 by Agrobacterium-mediated transformation resulted in the presence of oxidative stress markers, even in the absence of external superimposed stresses, and an increased sensitivity to reactive oxygen species (ROS)-generating substances, especially to menadione. A reduction in conidiation and in the percentage of mycorrhization of Vaccinium myrtillus roots was also observed. The latter findings establish the pivotal role of SOD1 as an important factor in the relationship between O. maius and its symbiotic partner. The lack of this ROS-scavenger may cause an imbalance in the redox homeostasis during host colonization and an alteration in the delicate dialogue between the fungus and its host plant.

Fungal endophytes from the roots of alpine and boreal Ericaceae

1997 ◽  
Vol 75 (9) ◽  
pp. 1570-1581 ◽  
Author(s):  
Sarah Hambleton ◽  
Randolph S. Currah
Keyword(s):  
Fragment Length Polymorphism ◽  
Fungal Endophytes ◽  
Natural Habitats ◽  
Phialocephala Fortinii ◽  
Vigorous Growth ◽  
Oidiodendron Maius ◽  
Polymorphism Data ◽  
Plant Families ◽  
Relationship Of ◽  
Diverse Plant

Oidiodendron mains Barron, Scytalidiutn vaccinii Dalpé, Litten, & Sigler, and a variable white taxon (VWT) were isolated consistently from the roots of ericaceous plants collected in three different habitats. Restriction fragment length polymorphism data were used to (i) clarify the identification of strains of O. maius with character states intermediate between O. maius and Oidiodendron griseum Robak, (ii) identify the VWT as distinct from S. vaccinii in spite of cultural similarities, and (iii) reveal that S. vaccinii comprises two genotypes correlated with habitat. Corn meal agar was used to induce conidiogenesis in S. vaccinii, and one strain produced apothecia consistent with the description of Hymenoscyphus ericae (Read) Korf & Kernan, confirming the anamorph–teleomorph relationship of these two taxa. Oidiodendron maius and S. vaccinii, already accepted as mycobionts of the Ericaceae, are confirmed as ubiquitous in natural habitats of Alberta and are often both isolated from the same root fragment. The isolation of Phialocephala fortinii Wang & Wilcox, a non-mycorrhizal endophyte of diverse plant families, from two of the sites but not from the acidic wetland indicates that its distribution depends on edaphic factors. Its vigorous growth on the initial isolation plates adversely affected the recovery of the other three taxa. Key words: ericoid mycorrhiza, Ericaceae, RFLP, Oidiodendron, Scytalidium, Hymenoscyphus, Phialocephala.

Isolation of Oidiodendron maius from Rhododendron and ultrastructural characterization of synthesized mycorrhizas

1989 ◽  
Vol 67 (7) ◽  
pp. 2206-2212 ◽  
Author(s):  
G. C. Douglas ◽  
M. C. Heslin ◽  
C. Reid
Keyword(s):  
Close Association ◽  
Calluna Vulgaris ◽  
Interfacial Zone ◽  
Root Cells ◽  
Ultrastructural Characterization ◽  
Mycorrhizal Roots ◽  
Oidiodendron Maius ◽  
Alternative Sources ◽  
Aseptic Conditions ◽  
Host Nucleus

Twelve fungal isolates were obtained from roots of field-grown Rhododendron plants. One of these produced ericoid mycorrhizal roots within 5 days when reassociated with Rhododendron plantlets under aseptic conditions. The organism was identified as Oidiodendron maius. A characteristic feature of this organism was production of conidiophores in both pure culture and in association with root cells of the host. Ultrastructural observations confirmed its mycorrhizal status and showed intracellular hyphae surrounded by an interfacial zone and plasma membrane. Hyphae were found in close association with the host nucleus and cytoplasmic organelles. Pure isolates derived from diverse alternative sources were also tested for mycorrhizal formation with Rhododendron under aseptic conditions. Thus, Pezizella ericae obtained from Calluna vulgaris produced mycorrhizal infections after 10 days of culture, whereas O. maius from Sitka spruce and Oidiodendron griseum from wood pulp failed to form mycorrhizas.

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