Effect of Inhibitors on the Morphology and Growth of Allomyces macrogynus

Abstract

SUMMARYThe ability of 18 compounds to inhibit morphogenesis and/or growth of the diploid stage of Allomyces macrogynus was assayed. Of the three stages of development -germination, vegetative growth, and sporogenesis -germination appeared to be the most sensitive to inhibition and vegetative growth the least sensitive. Sporogenesis was sensitive to most of the inhibitors tested, but high concentrations were required for effective activity. Inhibitors could be grouped according to the stage of germination (cyst or rhizoid) at which they blocked development; those effective at the rhizoid stage, could be divided further on the basis of the resultant morphology of the germling.

Effect of protein synthesis and respiratory inhibitors on microcycle conidiation of Aspergillus tamarii.

“…Further, the increase in conidial diameter was found to be less susceptible than the conidiophore formation. This is in agreement with the findings on Allomyces macrogynus and Aspergillus niger (2,3).…”