The influence of different parameters on IAA production of these strains was evaluated by the “one factor at a time” method and the obtained results showed that the best conditions for IAA production of DTAN1-M5 were a medium with the following compositions: 1 % peptone, % sucrose, % yeast extract, % NaCl, pH , supplemented with mg/mL L-tryptophan, which was incubated in a shaker at 150 rpm and 30 oC for 84 hours. The maximum amount of IAA was µg/mL. |