TABLE 1.
Plasmids and bacterial strains used in this study
| Plasmid or Rhizobium strain | Characteristics (amt of antibiotic used [μg/ml])a | Source |
|---|---|---|
| pHC60 | Broad-host-range plasmid with gfp; Tcr (10) | City University of New York (6) |
| Sinorhizobium meliloti 1021 | Smr (50) | Institute of Plant Physiology, Shanghai, People's Republic of China |
| Azorhizobium caulinodans ORS 571 | Ampr (100), Cbr (100) | Academy of Agriculture, Beijing, People's Republic of China |
| Sinorhizobium meliloti USDA 1002 | Kmr (50) | Chinese University of Agriculture, Beijing, People's Republic of China |
| Rhizobium leguminosarum USDA 2370 | Smr (50) | Chinese University of Agriculture, Beijing, People's Republic of China |
| Mesorhizobium huakui 93 | Smr (10) | Nanjing University of Agriculture, Nanjing, People's Republic of China |
| Sinorhizobium meliloti 1021 (gfp) | Smr (50), Tcr (10) | City University of New York, New York, N.Y. |
| Azorhizobium caulinodans ORS 571 (gfp) | Ampr (100), Tcr (10) | This study |
| Sinorhizobium meliloti USDA 1002 (gfp) | Kmr (50), Tcr (10) | This study |
| Rhizobium leguminosarum USDA 2370 (gfp) | Smr (50), Tcr (10) | This study |
| Mesorhizobium huakui 93 (gfp) | Smr (10), Tcr (10) | This study |
a
Tcr, tetracycline resistance; Smr, streptomycin resistance; Cbr, carbenicillin resistance; Kmr, kanamycin resistance; Ampr, ampicillin resistance; Tcr, tetracycline resistance.