Abstract:
:More than 100 tons of nitrobenzene and related compounds were released into Songhua River due to the explosion of an aniline production factory in November, 2005. Sediment samples were taken from the heavily polluted drainage canal, one upstream and three downstream river sites. The change of bacterial community structures along the river was studied by denaturing gradient gel electrophoresis (DGGE) and cloning and sequencing of 16S rRNA genes with five clone libraries constructed and 101 sequences acquired representing 172 clones. Both DGGE profiles and sequences of 16S rRNA genes from clone libraries demonstrated that the contaminated drainage canal and three downstream river sites were similar in that all had Betaproteobacteria, mainly grouped into Comamonadaceae, as the dominant group of bacteria, and all had Firmicutes, primarily as Clostridium spp. These results suggest that these latter two groups of bacteria may play potential roles in degradation and detoxification of nitrobenzene in the present contaminated river environments.
journal_name
FEMS Microbiol Ecoljournal_title
FEMS microbiology ecologyauthors
Li D,Yang M,Li Z,Qi R,He J,Liu Hdoi
10.1111/j.1574-6941.2008.00540.xsubject
Has Abstractpub_date
2008-09-01 00:00:00pages
494-503issue
3eissn
0168-6496issn
1574-6941pii
FEM540journal_volume
65pub_type
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