title: Production of amino acids by Azotobacter vinelandii and Azotobacter chroococcum with phenolic compounds as sole carbon source under diazotrophic and adiazotrophic conditions.
abstract: Azotobacter vinelandii strain ATCC 12837 and Azotobacter chroococcum strain H23 (CECT4435) were tested to grow in N-free or NH(4)Cl amended chemically defined media, with protocatechuic acid or sodium p-hydroxybenzoate as sole carbon (C) sources at a concentration of 2 mmol/L. Both substrates supported grow at similar rates than bacteria grown in control media amended with 2 mmol/L sodium succinate as C source. The two strains produced aspartic acid, serine, glutamic acid, glycine, hystidine, threonine, arginine, alanine, proline, cysteine, tyrosine, valine, methionine, lysine, isoleucine, leucine and phenylalanine after 72 h of growth in chemically defined media with 2 mmol/L of phenolic compounds or sodium succinate as sole C source amended or unamended with 0.1% (w/v) NH(4)Cl. Qualitative and quantitative production of all amino acids was not affected by the use of different C and N substrates.
authors.affiliation: Group of Environmental Microbiology, Department of Microbiology, Faculty of Pharmacy and Institute of Water Research, University of Granada, Spain.
authors.forename: J J
authors.initials: JJ
authors.lastname: Revillas
authors.forename: B
authors.initials: B
authors.lastname: Rodelas
authors.forename: C
authors.initials: C
authors.lastname: Pozo
authors.forename: M V
authors.initials: MV
authors.lastname: Martínez-Toledo
authors.forename: J González
authors.initials: JG
authors.lastname: López
mesh_terms: D000596:Amino Acids / Q000096:biosynthesis*; D016948:Azotobacter vinelandii / Q000254:growth & development*; D062385:Hydroxybenzoates / Q000494:pharmacology*; D012988:Soil Microbiology; D013045:Species Specificity; D019802:Succinic Acid / Q000494:pharmacology*
chemical_list: D000596:Amino Acids; D062385:Hydroxybenzoates; D019802:Succinic Acid