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Table 2 Symbiotic phenotypes of Medicago plants inoculated with virB mutants of S. meliloti KH46c and S. medicae M2

From: Comparative genomics of the core and accessory genomes of 48 Sinorhizobiumstrains comprising five genospecies

Host plant Inoculated strain Nodule numbera Nodule dry mass (mg) Plant dry mass (mg) Plant height (cm) Chlorophyll content (SPAD unit)
M. truncatula KH46c wild-type 79 6.6 208 12.2 44
A17 KH46c ΔvirB 6 - 9 38* 4.3* 145* 9.5* 43
  M2 wild-type 102 8.4 229 11.0 41
  M2 ΔvirB 6 - 9 51 6.2* 202 11.2 44
  Uninoculated control 0 0 37 3.3 17
M. truncatula KH46c wild-type 35 6.1 174 10.3 42
F83005-5 KH46c ΔvirB 6 - 9 24 5.5 158 9.8 39
  M2 wild-type 29 4.9 156 9.5 43
  M2 ΔvirB 6 - 9 22 6.7* 243* 10.7* 41
  Uninoculated control 0 0 44 3.3 16
M. tricycla KH46c wild-type 24 12.2 315 10.5 36
R108-C3 KH46c ΔvirB 6 - 9 12* 9.9 230 10.3 34
  M2 wild-type 11 2.8 33 4.2 19
  M2 ΔvirB 6 - 9 12 3.1 33 4.2 21
  Uninoculated control 0 0 26 3.5 16
M. satvia cv KH46c wild-type 56 1.6 95 8.5 54
Agate KH46c ΔvirB 6 - 9 42 6.8* 55 7.2 45*
  M2 wild-type 31 2.5 69 13.7 31
  M2 ΔvirB 6 - 9 28 2.5 85 14.6 28*
  Uninoculated control 0 0 79 12.5 21
  1. aValues are per plant. The asterisk indicates a significant difference compared with the wild-type strain by t-test (P < 0.05) of three biological replicates.