title: Mutations in nirA gene of Aspergillus nidulans and nitrogen metabolism.
mesh_terms: D000483:Alleles; D001233:Aspergillus nidulans / Q000201:enzymology / Q000378:metabolism*; D003433:Crosses, Genetic; D005796:Genes; D005838:Genotype; D009154:Mutation; D009565:Nitrate Reductases / Q000378:metabolism; D009572:Nitrite Reductases / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism*; D010641:Phenotype
chemical_list: D009565:Nitrate Reductases; D009572:Nitrite Reductases; D009584:Nitrogen