PMID: 19143321Jan 16, 2009Paper

Impact of acetochlor on ammonia-oxidizing bacteria in microcosm soils

Journal of Environmental Sciences (China)
Xin-Yu LiCheng-Gang Zhang

Abstract

Acetochlor is an increasingly used herbicide on corn in North China. Currently, the effect of acetochlor on soil ammonia-oxidizing bacteria (AOB) communities is not well documented. Here, we studied the diversity and community composition of AOB in soil amended with three concentrations of acetochlor (50, 150, 250 mg/kg) and the control (0 mg acetochlor/kg soil) in a microcosm experiment by PCR-DGGE (polymerase chain reaction-denaturing gradient gel electrophoresis) and the phylogenetic analysis of excised DGGE bands. DGGE profiles showed that acetochlor had a stimulating effect on AOB at the early stage after acetochlor amended, and the order of intensity and duration is medium-acetochlor amended samples (AM) > low-acetochlor amended samples (AL) > high-acetochlor amended samples (AH). At the end of 60 d microcosm, acetochlor had a negative effect on the diversity of AOB. Cluster analysis of DGGE profiles showed that acetochlor had a greater effect on the community structure of AOB on day 60 than on day 1. The phylogenetic analysis revealed that all the sequences of excised DGGE bands were closely related to members of the genus Nitrosospira and formed two separate subclusters designated as subcluster 1 and subcluster 2 affili...Continue Reading

References

Aug 15, 1998·Systematic and Applied Microbiology·A G SpeksnijderH J Laanbroek
Sep 7, 2001·Annual Review of Microbiology·G A Kowalchuk, J R Stephen

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Citations

Jul 20, 2012·Environmental Science and Pollution Research International·Zhen BaiXu-Dong Zhang
Jun 19, 2013·Environmental Science and Pollution Research International·Qingwei GuoShuguang Xie
Aug 12, 2014·Environmental Science and Pollution Research International·Qinglin ChenRyan A Scheel
Jul 1, 2015·Environmental Science and Pollution Research International·Olivier CrouzetClarisse Mallet

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