Table 3. Transport of amino acids and plant dry weights by strains of R. leguminosarum bv phaseoli.
Strain | Genotype | Glutamate | AIB | Alanine | Histidine | GABA | Leucine | Plant dry weights |
RU2222 | Wild-type | 27.4±0.2 | 25.0±1.2 | 36.4±1.9 | 7.0±0.6 | 11.1±0.6 | 10.4±0.8 | 1.37±0.08 |
RU1809 | aapJQM::ΩSp | 7.9±0.2 | 13.3±0.3 | 16.5±0.4 | 3.8±0.4 | 10.3±1.1 | 7.8±0.2 | 1.28±0.06 |
RU1932 | braE::TnphoA | 22.4±0.5 | 11.5±1.6 | 25.6±2.5 | 5.5±0.1 | <0.1 | 4.9±0.4 | 1.44±0.05 |
RU1933 | aapJQM::ΩSpbraE::TnphoA | 0.5±0.1 | <0.1 | 5.6±0.5 | 1.7±0.23 | <0.1 | 0.4±0.3 | 1.04±0.05 |
All strains were grown on AMS glucose/NH4Cl minimal medium. Rates of uptake are expressed as nmol min−1mg−1 protein. Values are the mean ± SEM of determinations from three or more independent cultures. Dry weights (g plant−1) are averages of >27 plants.