[Morphology of the mycelium of Ascobolus furfuraceus using different sources of nitrogen].

Ascobolus furfuraceus mycelium showed morphological variations when grown with different nitrogen sources. The hyphae were compared using as parameters cell diameter and length, branching and vacuolization. The variations in cell size, vacuolar area and branching, in response to the nitrogen source, suggest that the nitrogen régime plays a controlling role in the growth of the mycelium as well as in the morphogenesis of the cells. The results are discussed in relation to previous data on the metabolic efficiency of the fungus.