TABLE 2.
β-Galactosidase activities induced by hup-lacZ and hyp-lacZ fusions in bacteroids of different rhizobial strainsa
| Strain | β-Galactosidase activity (Miller units)b
|
||
|---|---|---|---|
| pHL55 → (hupL::lacZ) | pHL14 → (hypF::lacZ) | pHL12 ← (hypD::lacZ) | |
| R. leguminosarum bv. viciae UPM791 | 520 ± 16 | 1,700 ± 174 | 110 ± 16 |
| R. leguminosarum bv. viciae UML2 | 140 ± 24 | 2,000 ± 180 | 114 ± 34 |
| R. leguminosarum bv. viciae PRE | 623 ± 33 | 1,491 ± 18 | 120 ± 26 |
| R. etli CFN42 | 125 ± 20 | 1,850 ± 110 | 59 ± 13 |
| S. meliloti 102F34 | 120 ± 25 | 540 ± 97 | 20 ± 4 |
a
Bacteroids were obtained from plants grown in a standard nutrient solution.
b
β-Galactosidase activities are averages ± standard errors based on at least two determinations.