Indole degrading of ammonia oxidizing bacteria isolated from swine wastewater treatment system.
Three new strains named LPA11, LPB11 and LPC24 were isolated to investigate the patterns of indole degradation and ammonia oxidation in swine wastewater from different parts of a swine wastewater treatment system by the direct spreading plate method. These three isolates were all identified as Pseudomonas putida based on 16S-rDNA gene sequences, main physiological and biochemical analysis. They were capable of decomposing 1.0 mM indole completely in 10, 16 and 18 days respectively. According to the results of HPLC and GC/MS, the possible pathway for the degradation was via oxindole, isatin and anthranilic acid. The three bacteria were capable of oxidizing ammonia, and the strains LPA11 and LPC24 were capable of effectively reducing nitrate and nitrite.
Li
Ping
P
School of Environmental Studies, China University of Geosciences, Wuhan 430074, China. plicug@gmail.com
Tong
Lei
L
Liu
Kun
K
Wang
Yanhong
Y
Wang
Yanxin
Y
D000641:Ammonia / Q000378:metabolism*; D000818:Animals; D001419:Bacteria / Q000378:metabolism*; D007211:Indoles / Q000378:metabolism*; D010084:Oxidation-Reduction; D012623:Seawater / Q000382:microbiology; D013552:Swine; D014865:Waste Disposal, Fluid / Q000379:methods*; D014871:Water Microbiology
D007211:Indoles; D000641:Ammonia; C030374:indole