NDLI: Determination of microcystin-LR degrading gene mlrA in biofilms at a biological drinking water treatment facility

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Determination of microcystin-LR degrading gene mlrA in biofilms at a biological drinking water treatment facility

Content Provider	Semantic Scholar
Author	Shimizu, Kazuya Maseda, Hideaki Okano, Kunihiro Hiratsuka, Takumi Jimbo, Yusuke Xue, Qiang Akasako, Haruna Itayama, Tomoaki Utsumi, M. Zhang, Zhen Ya Sugiura, Norio
Copyright Year	2013
Abstract	Biological treatment methods used in water purification plants help degrade the cyanotoxin microcystin. The microcystin degraders in the aggregated microbial communities of biofilms in biological treatment facilities have not been previously investigated by molecular analysis. In the present study, the bacteria relevant to microcystin degradation and the gene encoding the microcystin-degrading enzyme MlrA were investigated in the biofilms of a biological drinking water treatment facility. Based on phylogenetic analyses of the 16S rRNA genes and mlrA, microcystin-degrading bacterial species were present in these biofilms and these bacteria possessed mlrA homologues. The deduced MlrA amino acid sequences had high sequence homology with previously reported MlrA enzymes. Non-culturable microcystin-degrading bacteria were found in the biofilms throughout the sampling period. This biological water treatment seems be a suitable method for the removal of microcystin by microcystin-degrading bacteria.
Starting Page	22
Ending Page	35
Page Count	14
File Format	PDF HTM / HTML
Volume Number	7
Alternate Webpage(s)	http://www.mijst.mju.ac.th/vol7/S22-35.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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