TABLE 3.

Symbiotic phenotypes of S. meliloti strainsa

StrainRelevent genotypeDry wt (mg/plant)%
RmG490Rm1021 phoC490::ΩSp pstC10217 ± 315
RmP371Rm1021 phoC490::ΩSp, pstC corrected43 ± 392
Rm1021Wild type, pstC102147 ± 5100
RmP110Rm1021, pstC wild-type allele (corrected)44 ± 392
ControlNo inoculation3 ± 17
RmG830Rm1021 phoC490::ΩSp pit310::Tn5 pstC10213 ± 16
RmP101Fix+ suppressor mutant of RmG83048 ± 4101
RmP636Rm1021 phoC490::ΩSp pit310::Tn5, pstC wild type49 ± 5103
RmP385RCR2011 phoC490::ΩSp45 ± 196
RCR2011Wild type50 ± 4106
RmP633RCR2011 phoC490::ΩSp pit310::Tn552 ± 3111
RmP379Rm5000, pstC1021 allele52 ± 2110
RmP388Rm5000, phoCDET deletion45 ± 295
Rm5000Derivative of wild-type strain SU47, Rif resistance46 ± 599
  • a Plants were harvested 28 days after inoculation. The dry weights are shoot dry weights (averages ± standard errors for three determinations with 10 plants each). The percentages were determined by comparison with the value for the wild-type strain (Rm1021).