Degradation of cellulose by Verticillium albo-atrum

1958 ◽  
Vol 41 (2) ◽  
pp. 242-IN6 ◽  
Author(s):  
P.W. Talboys
Keyword(s):  
Verticillium Albo Atrum

Étude du polymorphisme intraclonal chez le Verticillium albo-atrum, forme à microsclérotes. IV. L'aptitude à varier chez les variants morphologiques

1983 ◽  
Vol 61 (12) ◽  
pp. 3536-3542
Author(s):  
Claude Boisson ◽  
Houria Lahlou
Keyword(s):  
Mixed Type ◽  
The Other ◽  
Wild Type ◽  
Irreversible Loss ◽  
Verticillium Albo Atrum

The capacity for variation was studied using 10- to 18-month-old cultures of the main variants of two Moroccan isolates of Verticillium albo-atrum R. et B. (microsclerotial form). The hyaline variants were very stable and never returned to the wild type. The other variants gave rise to new variants which differed even more from the wild type but never reverted. A "mixed" type of variant, hyaline but with patches or sectors resembling the wild type, gave rise to wild or hyaline cultures when subcultured, depending on the conditions of transfer. All other variation tended toward a stronger alteration of sclerogenesis without reversing and an irreversible loss of ability to produce microsclerotia (hyaline cultures).

Verticillium albo-atrum and V. dahliae as mycoparasites

1970 ◽  
Vol 48 (6) ◽  
pp. 1137-1139 ◽  
Author(s):  
G. L. Barron ◽  
J. T. Fletcher
Keyword(s):  
Plant Pathogens ◽  
Higher Plants ◽  
Soil Borne Pathogens ◽  
Verticillium Albo Atrum

Verticillium albo-atrum and V. dahliae, normally serious soil-borne pathogens of higher plants, can behave as destructive mycoparasites. Using Rhopalomyces elegans as the test host it was found that both species could readily penetrate the conidiophore walls and grow profusely in the conidiophores and vesicles. The hyphae of V. dahliae may penetrate from the vesicle through the spore connective and into the developing conidia preventing normal maturation in most cases. The significance of these findings in relation to the persistence of these fungi as soil-borne plant pathogens is discussed.

An adaptation of a moist-chamber method for isolating and identifying Verticillium spp.

1971 ◽  
Vol 17 (8) ◽  
pp. 1139-1141 ◽  
Author(s):  
C. D. McKeen ◽  
H. J. Thorpe
Keyword(s):  
Moist Chamber ◽  
Chamber Method ◽  
Fungal Hyphae ◽  
Verticillium Albo Atrum

An adaptation of a moist-chamber method is described whereby Verticillium albo-atrum, V. dahliae, and V. nigrescens can readily be isolated from herbaceous and woody hosts and easily identified. Segments of infected stems, petioles, and roots cut transversely can be observed microscopically at daily or frequent intervals to determine the origin of outgrowing fungal hyphae in the absence of troublesome contaminants.

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