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Characteristics of a Microcystin-Degrading Bacterium under Alkaline Environmental Conditions
Joint Authors
Okano, Kunihiro
Sugiura, Norio
Maseda, Hideaki
Zhang, Zhenya
Utsumi, Motoo
Kawauchi, Yukio
Neilan, Brett A.
Shimizu, Kazuya
Source
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-02-22
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Pharmacy, Health & Medical Sciences
Medicine
Abstract EN
The pH of the water associated with toxic blooms of cyanobacteria is typically in the alkaline range; however, previously only microcystin-degrading bacteria growing in neutral pH conditions have been isolated.
Therefore, we sought to isolate and characterize an alkali-tolerant microcystin-degrading bacterium from a water bloom using microcystin-LR.
Analysis of the 16S rRNA gene sequence revealed that the isolated bacterium belonged to the genus Sphingopyxis, and the strain was named C-1.
Sphingopyxis sp.
C-1 can grow; at pH 11.0; however, the optimum pH for growth was pH 7.0.
The microcystin degradation activity of the bacterium was the greatest between pH 6.52 and pH 8.45 but was also detected at pH 10.0.
The mlrA homolog encoding the microcystin-degrading enzyme in the C-1 strain was conserved.
We concluded that alkali-tolerant microcystin-degrading bacterium played a key role in triggering the rapid degradation of microcystin, leading to the disappearance of toxic water blooms in aquatic environments.
American Psychological Association (APA)
Okano, Kunihiro& Shimizu, Kazuya& Kawauchi, Yukio& Maseda, Hideaki& Utsumi, Motoo& Zhang, Zhenya…[et al.]. 2010. Characteristics of a Microcystin-Degrading Bacterium under Alkaline Environmental Conditions. Journal of Toxicology،Vol. 2009, no. 2009, pp.1-8.
https://search.emarefa.net/detail/BIM-511148
Modern Language Association (MLA)
Okano, Kunihiro…[et al.]. Characteristics of a Microcystin-Degrading Bacterium under Alkaline Environmental Conditions. Journal of Toxicology No. 2009 (2009), pp.1-8.
https://search.emarefa.net/detail/BIM-511148
American Medical Association (AMA)
Okano, Kunihiro& Shimizu, Kazuya& Kawauchi, Yukio& Maseda, Hideaki& Utsumi, Motoo& Zhang, Zhenya…[et al.]. Characteristics of a Microcystin-Degrading Bacterium under Alkaline Environmental Conditions. Journal of Toxicology. 2010. Vol. 2009, no. 2009, pp.1-8.
https://search.emarefa.net/detail/BIM-511148
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-511148