Article 1 Azotobacter vinelandii 1 DNA modification 1 Laboratories 1 Nitrogen Fixation 1 Nitrogenase 1 automation 1 bacterial growth 1 bacterial strain 1 bacterium culture 1 diazotroph 1 genetics 1 growth rate 1 laboratory 1 laboratory test 1 metabolism 1 microplate reader nitrogen fixation 1 nitrogenase 1 nonhuman 1 priority journal 1 process optimization 1