title: Microbial fixation of nitrogen in the presence of lanthanum sulphate.
abstract: The effect of lanthanum sulphate on five Azotobacter strains (4A7, 10, 5A2, 5A1, and 3A3) isolated from Allahabad soil consists in a considerable increase in the nitrogen fixation, carbon consumption and in the amount of nitrogen fixed in mg per g of carbon consumed. The presence of 200 microM, 300 microM and 400 microM lanthanum sulphate in culture media increases the fixation of nitrogen by all the nitrogen fixers significantly.
mesh_terms: D001395:Azotobacter / Q000187:drug effects* / Q000378:metabolism; D002244:Carbon / Q000378:metabolism; D003470:Culture Media; D007811:Lanthanum / Q000494:pharmacology*; D009586:Nitrogen Fixation / Q000187:drug effects*; D012988:Soil Microbiology
chemical_list: D003470:Culture Media; C031978:lanthanum sulfate; D007811:Lanthanum; D002244:Carbon