TABLE 1.
Symbiosis phenotypes of wild-type and QS mutant strainsa
| Strainb | First appearance of nodules (day) | Dry wt (mg/nodule) | Total no. of nodules | Pink nodule formation (%)c | Acetylene reduction (μmol/g nodules) |
|---|---|---|---|---|---|
| Wild type | 7.3 (1.0) | 59.6 (38.2) | 93.3 (34.0) | 89.5 | 20.4 (12.1) |
| cinR strain | 7.4 (0.4) | 48.3(33.1) | 60.0 (20.7)** | 100* | 8.1 (4.3) ** |
| cinI strain | 8.0 (1.5) | 56.3 (24.9) | 103.9 (35.4) | 84.8 | 15.0 (10.1) |
| raiR strain | 7.1 (0.8) | 45.4 (14.8) | 73.9 (25.7) | 82.5 | 11.4 (6.1) * |
| raiI strain | 8.5 (0.3) | 52.6 (17.4) | 106.1 (49.8) | 74.7* | 17.1 (6.1) |
| traR strain | 7.4 (0.6) | 47.6 (18.1) | 72.9 (31.3) | 83.7 | 10.5 (9.9) |
| traI strain | 6.8 (0.7) | 51.7 (17.0) | 80.4 (19.3) | 87.2 | 7.8 (4.6) ** |
a
Values are means (standard deviations) based on the examination of at least 16 replicates per strain. *, P < 0.05; **, P < 0.005 (Student t test).
b
Blank inoculum did not form any nodules.
c
Percentage of the total number of nodules.