TABLE 1.
Sources of atrazine-degrading bacterial strains from Canadian and French farms; presence of atzA, atzB, atzC, and IS1071; and identities of the end products of atrazine metabolism by the strains
| Strain | Sourcea | Hybridization with probe forb:
|
End product of atrazine metabolismc | |||
|---|---|---|---|---|---|---|
| atzA | atzB | atzC | IS1071 | |||
| C147 | 1 | + | + | + | + | CO2 |
| C151 | 1 | + | + | + | + | CO2 |
| C161 | 1 | + | + | + | + | CO2 |
| C163 | 1 | + | + | + | + | CO2 |
| C185 | 2 | + | + | + | + | CO2 |
| C186 | 2 | + | + | + | + | CO2 |
| C195 | 1 | + | + | + | + | CO2 |
| C197 | 1 | + | + | + | + | CO2 |
| C160 | 1 | + | − | + | + | Hydroxyatrazine |
| C150 | 1 | + | − | + | + | Hydroxyatrazine |
| C155 | 1 | + | − | − | − | Hydroxyatrazine |
| C156 | 1 | + | − | − | − | Hydroxyatrazine |
| C215 | 3 | + | − | − | − | Hydroxyatrazine |
| C218 | 4 | + | − | − | − | Hydroxyatrazine |
a
1, site 1 loam soil, Ottawa, Ontario, Canada; 2, site 2 loam soil, Ste.-Hyacinthe, Quebec, Canada; 3, site 3 calcareous soil, Paris, France; 4, site 4 calcareous soil, Paris, France.
b
Based on dot-blot hybridization of total genomic DNA.
c
Based on conversion of [ring-U-14C]atrazine to 14CO2 or to radioactive products resolved by HPLC.