Correlation of ultrastructure in Azotobacter vinelandii with nitrogen source for growth.
Azotobacter synthesizes an extensive internal membranous nework when grown with air (N(2)), i.e., under conditions when these bacteria fix nitrogen. Very slight quantities of internal membrane, concentrated mainly about the cell periphery, are formed when Azotobacter grows with fixed nitrogen, i.e., ammonia and amino acids. Compared to cells growing with ammonia, cells utilizing atmospheric nitrogen as the sole nitrogen source are smaller in size and volume, grow one-third slower, and lack detectable poly-beta-hydroxybutyrate.
D000388:Air; D000596:Amino Acids / Q000378:metabolism; D001395:Azotobacter / Q000166:cytology* / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism; D002087:Butyrates; D002462:Cell Membrane; D002467:Cell Nucleus; D002473:Cell Wall; D008854:Microscopy, Electron; D009584:Nitrogen / Q000494:pharmacology*; D009586:Nitrogen Fixation; D000644:Quaternary Ammonium Compounds / Q000378:metabolism
D000596:Amino Acids; D002087:Butyrates; D000644:Quaternary Ammonium Compounds; D009584:Nitrogen