Open AccessIsolation of a triazophos‐degrading strain Klebsiella sp. E6 effectively utilizing triazophos as sole nitrogen source
Author(s) -
Wang Lihong,
Zhang Lin,
Chen Huanlin,
Tian Qingguo,
Zhu Guonian
Publication year - 2005
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1016/j.femsle.2005.09.044
Subject(s) - strain (injury) , chemistry , nitrogen , carbon fibers , methanol , degradation (telecommunications) , hydrolysis , carbon source , nuclear chemistry , biochemistry , biology , organic chemistry , materials science , telecommunications , anatomy , composite number , computer science , composite material
A triazophos‐degrading strain, Klebsiella sp. E6, was isolated by enrichment technology from soil that had been exposed long‐term to triazophos. The strain grew well at pH 7.0–8.0 with a broad temperature profile ranging from 32 to 37 °C. It could keep good growth on methanol as carbon source and TAP as additional carbon source or nitrogen source. The experiment on the degradation activities of strain E6 showed that it utilized TAP more effectively when TAP was supplied as the sole nitrogen source, as opposed to additional carbon source. The intermediates of triazophos metabolism indicated that degradation occurred through a hydrolysis mechanism, one of the products of which, 1‐phenyl‐3‐hydroxy‐1,2,4‐triazole, was also mineralized by strain E6.