scholarly journals The sclerotium viability in several species of Typhula genus

2014 ◽  
Vol 23 (1) ◽  
pp. 137-142
Author(s):  
Maria Dynowska

The aim of the experiment was to investigate the sclerotium vivacity in three fungus species: <i>Typhula incarnata</i> Lasch ex Fr., <i>Typhula phacorrhiza</i> Fr. and <i>Typhula variabilis</i> Riess.

1998 ◽  
Vol 76 (12) ◽  
pp. 2037-2041 ◽  
Author(s):  
Vladimir Vujanovic ◽  
Marc St-Arnaud ◽  
Peterjürgen Neumann ◽  
J André Fortin

Diarimella laurentidae, a new species occurring on dead bark and decorticated twigs of American beech (Fagus grandifolia Ehrh.), is reported from the Muir's Wood ecological reserve, located in the centre of the Haut-Saint-Laurent region in the province of Quebec. Diarimella laurentidae is characterized by stromatic, pulvinate, black, setose fructifications composed of a basal stroma of textura angularis, a brown peripheral wall of textura porrecta, conidiomatal setae of two types, and unicellular multisetulate conidia. Its relationships with described Diarimella species is discussed. This is the first report of a species of Diarimella from North America.Key words: Diarimella laurentidae, new fungus species, coelomycete, Fagus grandifolia.


1998 ◽  
Vol 19 (3) ◽  
pp. 239-251 ◽  
Author(s):  
B. Czeczuga ◽  
E. Muszyńska ◽  
A. Krzemińska

AbstractThe mycoflora developing on the spawn of nine species of amphibians was investigated under laboratory conditions. Fifty-two zoosporic fungus species were found to grow on the spawn investigated, including 6 chytridiomycetes, 1 hyphochytriomycete, 44 oomycetes and 1 zygomycete fungus. Out of these 52 species, 23 are known as parasites or necrotrophs of fish. Five fungus species were recorded for the first time from Poland.


1988 ◽  
Vol 66 (7) ◽  
pp. 1321-1324 ◽  
Author(s):  
B. Metzler

The conidia of monokaryotic strains of Typhula incarnata Lasch ex Fr. failed to germinate. However, homing reactions in compatible mycelia were induced. The homing branches of hyphae often fused with conidia. As a result of dikaryon formation the production of clamp connections took place. These characteristics, their “wet” surface, and their minute size permit us to term the conidia of T. incarnata "spermatia."


1987 ◽  
Vol 65 (2) ◽  
pp. 233-241 ◽  
Author(s):  
W. J. Newsted ◽  
N. P. A. Huner

Major polypeptides were observed upon one-dimensional sodium dodecyl sulfate gel electrophoresis of sclerotial extracts of the following psychrophiles: Myriosclerotinia borealis, Coprinus psychromorbidus, Typhula idahoensis, and Typhula incarnata. In general, the number, molecular mass, and relative proportion of these major sclerotial polypeptides varied considerably from species to species. Furthermore, in the case of M. borealis, the major sclerotial polypeptide did not appear to be an artifact of culturing conditions since a major polypeptide of similar molecular mass was also present in sclerotia of M. borealis collected from the field. Generally, the major sclerotial polypeptides were visible in the sclerotial initials but were not apparent in the vegetative hyphae. Thus, these major sclerotial polypeptides appear to be expressed as a function of sclerotial development. Electrophoresis of protein extracts of T. idahoensis and T. incarnata initially solubilized either in sodium dodecyl sulfate or urea sample buffer indicated that the type of denaturant initially used had a profound influence on the relative proportions of the major polypeptides and the overall polypeptide profile. Isoelectric focusing of sclerotial extracts indicated that the isoelectric points of the major sclerotial polypeptides of M. borealis ranged from 6.2 to 6.7, whereas the values of the major sclerotial polypeptides of the other three species were basic and ranged from 7.0 to 7.7.


2011 ◽  
Vol 7 (2) ◽  
pp. 245-254 ◽  
Author(s):  
Xiaorong Zhang ◽  
Xiaoxiao He ◽  
Kemin Wang ◽  
Xiaohai Yang

2014 ◽  
Vol 14 (2) ◽  
pp. 142-151
Author(s):  
I Ketut Suada ◽  
Ni Wayan Suniti

Isolation and identification of mangosteen yellow latex pathogen through Koch’s Postulate application and molecular analysis. The yellow latex disease decreases fruit quality of mangosteen because exogenic latex causes dirty fruit and the endogenic latex makes the bitter fruit taste and does not deserve to be consumed. The causal agent of the disease caused phusilogical disorder so that cells break due to unstability of cell turgor, the drift irrigation treatment was able to decrease the disease of 35.22%, therefore the causal agent could be microbe that promote the yellow latex. This research was aimed to find the yellow latex pathogens with its characteristics. The Koch Postulate was apllied to isolate and proved the microbes associated to the yellow latex and molecular analysis was constructed subsequently to find the microbe species.  The result of the research proved that there were three fungus species as the biotic agent responsible to the disease. The fungus were Verticillium albo-atrum with the highest pathogenecity ( 74.87%), followed by Fusarium oxysporum ( 70.15%), and Pestalotia macrotricha (20.32%).


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