title: Detoxification of microcystin-LR in water by Portulaca oleracea cv.
abstract: Microcystin-LR (0.02 μg/ml) in the hydroculture medium of Portulaca oleracea cv., became below the detection level (<0.0001 μg/ml) by HPLC analysis after 7 days. The toxicity of microcystin estimated with protein phosphatase inhibition assay, however, remained at 37% of the initial level, indicating that microcystin-LR was transformed by P. oleracea cv. into unknown compound(s) of lower toxicity.
authors.affiliation: Department of Environmental Science, Faculty of Science, Shinshu University, Asahi 3-1-1, Matsumoto, Nagano 390-8621, Japan.
authors.forename: Takatoshi
authors.initials: T
authors.lastname: Isobe
authors.affiliation: The Kansai Electric Power Co., Environmental Research Center, Keihanna-Plaza 12F, 1-7 Hikaridai, Seikacho, Sourakugun, Kyoto 619-0237, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Okuhata
authors.affiliation: The Kansai Electric Power Co., Environmental Research Center, Keihanna-Plaza 12F, 1-7 Hikaridai, Seikacho, Sourakugun, Kyoto 619-0237, Japan. Electronic address: miyasaka.hitoshi@a4.kepco.co.jp.
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Miyasaka
authors.affiliation: Department of Environmental Science, Faculty of Science, Shinshu University, Asahi 3-1-1, Matsumoto, Nagano 390-8621, Japan.
authors.forename: Bong-Seok
authors.initials: BS
authors.lastname: Jeon
authors.affiliation: Department of Environmental Science, Faculty of Science, Shinshu University, Asahi 3-1-1, Matsumoto, Nagano 390-8621, Japan.
authors.forename: Ho-Dong
authors.initials: HD
authors.lastname: Park
mesh_terms: D001711:Biotransformation; D002851:Chromatography, High Pressure Liquid; D004791:Enzyme Inhibitors / Q000378:metabolism; D008387:Marine Toxins; D052998:Microcystins / Q000378:metabolism*; D010749:Phosphoprotein Phosphatases / Q000037:antagonists & inhibitors; D031822:Portulaca / Q000378:metabolism*; D014867:Water / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D004791:Enzyme Inhibitors; D008387:Marine Toxins; D052998:Microcystins; D014867:Water; D010749:Phosphoprotein Phosphatases; C057862:cyanoginosin LR
keywords: Cyanobacterial toxin; Hydroculture; Microcystin; Microcystin-LR; Phytoremediation; Portulaca oleracea cv.; Protein phosphatase inhibition assay