title: Growth responses to nutrients of an auxotroph and a prototroph of a predatory fungus.
abstract: The growth responses of a prototroph and an auxotroph of Arthrobotrys dactyloides were compared, on several nutrient media. The prototroph can utilize a variety of nitrogenous compounds almost equally, but the auxotroph has an exacting requirement for several amino acids together. Both strains utilize sucrose best among the three sugars tested as a C-source but the prototroph responds strongly to phospholipid, in addition. They differ in their needs for purines, pyrimidines and B vitamins.
mesh_terms: D050260:Carbohydrate Metabolism; D003470:Culture Media; D003904:Mitosporic Fungi / Q000254:growth & development* / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism
chemical_list: D003470:Culture Media; D009584:Nitrogen