Table 3.
Symbiotic properties of the four most competitive Burkholderia type strains.
| Bacterial strains |
|||||
|---|---|---|---|---|---|
| Parameter | Uninoculated control | B. diazotrophica LMG26031 | B. mimosarum LMG23256 | B. phymatum LMG21445 | B. tuberum LMG21444 |
| Total shoot N content [mg N/g shoot dry weight] | |||||
| Bean | 11.09a | 14.97ac | 22.59bc | 15.33ac | 16.32ac |
| Cowpea | 11.32a | 11.82a | 13.60ab | 9.67ac | ND |
| Mimosa | 11.20a | 19.32b | 29.59c | 20.20b | ND |
| Siratro | 10.60a | 20.39b | 8.35a | 12.27ac | 19.05bc |
| Dry weight shoot [mg shoot] | |||||
| Bean | 369.05a | 404.40a | 383.47a | 374.83a | 407.75a |
| Cowpea | 83.45a | 89.78a | 99.37a | 81.28a | ND |
| Mimosa | 13.80a | 21.32a | 41.35a | 27.22a | ND |
| Siratro | 29.20a | 31.48a | 32.03a | 35.50a | 31.12a |
| Dry weight nodules [mg] | |||||
| Bean | 0 | 0.81a | 1.10b | 0.42c | 0.56ac |
| Cowpea | 0 | 0.12a | 0.20a | 0.15a | ND |
| Mimosa | 0 | 0.13a | 0.14a | 0.11a | ND |
| Siratro | 0 | 0.41a | 0.29a | 0.31a | 0.35a |
| Nodule number | |||||
| Bean | 0 | 58.60a | 97.00b | 82.50b | 49.17a |
| Cowpea | 0 | 9.67a | 4.50ab | 12.50ac | ND |
| Mimosa | 0 | 12.56a | 9.50a | 7.82a | ND |
| Siratro | 0 | 5.33a | 7.67ab | 13.00b | 14.00b |
For each row, values with the same letter are not significantly different (ANOVA, Tukey’s test with p-value ≤ 0.05). ND, not determined since this bacterial strain is not nodulating this host plant. In bold the best strain for each row is indicated.