Mise en �vidence de deux types de myc�lium chez le Sphaerostilbe repens et �tude de leur capacit� d'agr�gation

1982 ◽  
Vol 77 (3) ◽  
pp. 145-152 ◽  
Author(s):  
M. El-Khouri ◽  
B. Botton
Keyword(s):  
Sphaerostilbe Repens

Correlations de croissance entre le mycelium et les rhizomorphes chez le Sphaerostilbe repens

1979 ◽  
Vol 45 (4) ◽  
pp. 407-414 ◽  
Author(s):  
BERNARD BOTTON ◽  
CATHERINE CASALIS-GOUGEROT
Keyword(s):  
Sphaerostilbe Repens

Influence of calcium on the differentiation and growth of aggregated organs in Sphaerostilbe repens

1978 ◽  
Vol 24 (9) ◽  
pp. 1039-1047 ◽  
Author(s):  
B. Botton
Keyword(s):  
Culture Medium ◽  
Defined Medium ◽  
Vegetative Mycelium ◽  
Sphaerostilbe Repens

In the ascomycete Sphaerostilbe repens the vegetative mycelium aggregated into structures composed of aerial coremia and rhizomorphs immersed in the culture medium. The morphology and growth of the cultures were examined on a defined medium with and without calcium supplementation.Initiation and growth of aggregated organs occurred only if calcium was present continuously in the culture medium. On calcium-deficient media the fungus produced only vegetative mycelium which retained its ability to aggregate in the presence of the cation. Small concentrations of calcium (less than 1 ppm) stimulated aggregation of the mycelium, but higher concentrations (about 200 ppm) were necessary to obtain optimum development of the aggregated organs. Strontium partially replaced calcium, but lithium did not, as a stimulator of aggregation.

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