| Donor strains | Pattern of donor strains | Recipient strains | Pattern of recipient strains | Frequency of transfer in nutrient broth | Frequency of transfer in wastewater | Pattern of transconjugants | Markers transferred |
| PR 7 | Hg, Co, Cu, Ni, Cd, Zn | PR8 | Cu, Ni, Cd, | 3.4 × 10−1 | 2.4 × 10−1 | Co, Cr, Cu, Ni | Zn, Cr | PR 8 | Cu, Ni, Cd | PR9 | Hg, Co, Ni, Cd, | 1.0 × 10−2 | 0 | Co, Cr, Cu, Ni, Zn | Cu | PR 27 | Hg, Co, Cr, Cu, Ni, Cd, Zn | PR46 | Cr, Cu, Ni, Cd, Zn | 1.5 × 10−1 | 2.8 × 10−1 | Cr, Cu, Ni, Cd, Zn | Cr, Co | PR 30 | Co, Cr, Cu, Ni, Cd | PR4 | Cr, Cu, Ni, Zn | 1.2 × 10−1 | 0 | Hg, Co, Cr, Cu, Ni, Cd, Zn | Co, Cd | PR 38 | Co, Cr, Cu, Ni, Zn | PR17 | Cr, Ni | 8.0 × 10−2 | 3.1 × 10−1 | Co, Cr, Cu, Ni, Zn | Zn, Cu | PR 43 | Hg, Co, Cr, Cu, Ni, Cd, Zn | PR38 | Hg, Co, Cr, Cu, Ni, Zn | 1.6 × 10−1 | 1.8 × 10−1 | Co, Cr, Cu, Ni, Cd, Zn | Cd | PR 47 | Co, Cr, Cu, Ni, Cd, Zn | PR25 | Cr, Zn | 0.0 | 5.0 × 10−2 | Co, Cr, Cu, Ni, Zn | Co, Ni |
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