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oai:miyazaki-u.repo.nii.ac.jp:00005575 2024-12-26T06:46:17Z 80 80:65

Characteristics to arsenic of Bordetella petrii strain KC42 40315354 宮武, 宗利 ミヤタケ, ムネトシ Miyatake, Munetoshi 宮武 ミヤタケ Miyatake 宗利 ムネトシ Munetoshi 宮崎大学 University of Miyazaki 林, 幸男 ハヤシ, サチオ Hayashi, Sachio 林 ハヤシ Hayashi 幸男 サチオ Sachio Bordetella petrii strain KC42, Bioremediation, Arsenic methylation, Methylated organic arsenic, Arsenic removal The properties of Bordetella petrii strain KC42 isolated from the soil in Miyazaki Prefecture were investigated in terms of arsenic methylation and removal in this study. No differences were observed in the growth of strain KC42 between As（III）- and As（V）-supplemented culture medium. Strain KC42 metabolized inorganic arsenic （<5.0 mgAs/L） to nonvolatile species such as monomethylarsonic acid, dimethylarsinic acid, trimethylarsenic oxide and arsenobetaine effectively. In culture supplemented with 0.2 mgAs/L As（V）, 98.7% of the arsenic remaining in the supernatant was found to be methylated organic arsenic compounds. An analysis of the arsenIc adsorbed to the bacterial cell walls revealed that most of the arsenic removed from culture medium was accounted by cell wall adsorption for both As（III）- and As（V）-supplementation, and that in both cases, all of the adsorbed arsenic was in the As（Ill） form. These results demonstrate that strain KC42 possesses arsenic-methylating and arsenic-removing capabilities, and may therefore be used in the bioremediation of arsenic. University of Miyazaki, IRISH 2015-10 eng other VoR http://hdl.handle.net/10458/6287 https://miyazaki-u.repo.nii.ac.jp/records/5575 4th InternationalArsenic Symposium in MIYAZAKI 2015 116 120 https://miyazaki-u.repo.nii.ac.jp/record/5575/files/p13_arsenic2015.pdf application/pdf 451.8 kB 2020-06-21