Table 2

Antibiotic sensitivity assaya

AntibioticAmt/discS. meliloti 1021Sce10Sce11
Diam (mm)SEMDiam (mm)SEMDiam (mm)SEM
Streptomycin10 μg7.00.07.00.07.00.0
Kanamycin30 μg11.30.37.0*0.07.0*0.0
Bacitracin2 IU7.00.07.00.07.00.0
Lysozyme250 μg7.00.07.00.07.00.0
Cycloserine100 μg9.70.3100.69.70.7
Penicillin10 IU14.30.97.7*0.722.7*1.5
Vancomycin5 μg21.31.2190.022.7**0.3
  • a The diameters of clearance around the disc (7 mm across) are presented together with the associated standard errors of the means (SEM). For each experiment, the average of the results determined for three plates is presented (n = 3). *, significant differences (P < 0.01; two-sided t test with equal variances) between the reference strain and strains Sce10 and Sce11; **, significant differences (P < 0.01; two-sided t test with equal variances) between strains Sce10 and Sce11.