Table 2.
Bacterial strains used to test the specificity of each primer pair.
| Bacteria strain | Similarity of 16S rRNA to the targeted strain | Primer tested | Amplification | Origin |
|---|---|---|---|---|
| Caulobacter segnis 1776 | 97% | 3260_2F, 2R | Not detected | Isolated from sorghum rhizosphere |
| Caulobacter rhizosphaerae 2154 | 100% | Not detected | Isolated from sorghum soil | |
| Chitinophaga pinensis 1232 | 100% | 1204_1F, 1R | Not detected | Isolated from sorghum root from low-nitrogen field |
| Chitinophaga sancti 3198 | 97% | Not detected | Isolated from sorghum root from low-nitrogen field | |
| Chitinophaga pinensis 1209 | 100% | Not detected | Isolated from sorghum root from low-nitrogen field | |
| Terrabacter sp. 3211 | 99% | 3264_2F, 2R | Not detected | Isolated from sorghum root from full-nitrogen field |
| Terrabacter lapilli 3265 | 98% | Not detected | Isolated from sorghum root from full-nitrogen field |