Characterization of atrazine degradation and nitrate reduction by Pseudomonas sp strain ADP

Concomitant atrazine degradation and nitrate reduction by a pure culture of Pseudomonas sp. strain ADP were studied. Under anoxic conditions, Ps ADP g rew well and degraded atrazine efficiently in the presence of nitrate. Simi lar atrazine degradation rates were observed under both anoxic and aerobic conditions: 30.7 +/- 2.83 and 36.2 +/- 0.44 mg atrazine g(-1) cell h(-1), r espectively. A high denitrification rate of 90.8 +/- 8.22 mg NO3--N g(-1) c ell h(-1) was also observed using Ps ADP with citrate as the electron donor . The required citrate to nitrate ratio for complete denitrification was 5. 11 +/- 0.15 g citrate g(-1) NO3--N. (C) 2000 Elsevier Science Ltd. All righ ts reserved.