[Microbial degradation of Abamectin in soil].
Incubation test on the degradation dynamics of Abamectin in soil showed that the half-life of its non-biodegradation plus microbial biodegradation, non-biodegradation, and microbial biodegradation was 34.8, 277.3 and 49.9 d, respectively, and its degradation in soil was mostly by microbes. A dominant bacterium which could effectively degrade Abamectin was isolated from test soil, and identified as Stenotrophomonas maltrophilia by 16S rDNA. The crude enzyme extracted from the dominant bacteria had a Michaelis-Menten's constant 6.78 nmol x ml(-1) and a maximum rate 81.5 nmol x min(-1) x mg(-1).
Zhang
Wei
W
Resources and Evironmental Engineering Institute, East China University of Science and Technology, Shanghai 200237, China. zwzju@sohu.com
Yu
Yunlong
Y
Lin
Kuangfei
K
Li
Shaonan
S
Wu
Jialun
J
Fan
Defang
D
D001673:Biodegradation, Environmental; D007306:Insecticides / Q000378:metabolism*; D007559:Ivermectin / Q000031:analogs & derivatives* / Q000378:metabolism; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012987:Soil / Q000032:analysis; D012988:Soil Microbiology; D020588:Stenotrophomonas / Q000302:isolation & purification / Q000378:metabolism*
D007306:Insecticides; D012336:RNA, Ribosomal, 16S; D012987:Soil; C048324:abamectin; D007559:Ivermectin