M. Pereira et Nm. Martinezrossi, THE AREA(R) MUTATIONS OF ASPERGILLUS-NIDULANS CONFER LOW PH SENSITIVITY IN THE PRESENCE OF AMMONIUM AS THE ONLY NITROGEN-SOURCE, Letters in applied microbiology, 27(1), 1998, pp. 54-56
The utilization of nitrogen sources by the fungus Aspergillus nidulans
is controlled by a mechanism mediated by areA, a wide domain regulato
ry gene. It has been verified that the strains carrying the mutant all
ele areA(r) are inhibited when growing at low pH in the presence of am
monium as the only nitrogen source. The genetic analysis of this marke
r showed that it apparently maps at the areA locus.