細胞内鉄鉱物は,不類似の鉄を減少させるバクテリアに含まれる
Susan Glasauer1, Sean Langley, Terry J Beveridge
1Department of Microbiology, College of Biological Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada. sglasaue@micro.uoguelph.ca
まとめ
Shewanella putrefaciens CN32バクテリアは,酸化鉄鉱物を細胞内で形成した. この発見は,土壌と堆積物の環境における鉄の循環のための新しい細菌の経路を明らかにしています.
科学分野:
- 微生物学 微生物学とは
- 地質化学 地質化学
- バイオミネラライゼーション
背景:
- プロカリオットによる制御された鉱物形成は稀である.
- マグネトタクシス細菌は,鉄酸化物/硫化物 (磁石,グレイギット) を形成する.
- Shewanella putrefaciens CN32は,鉄の減少のために知られています.
研究 の 目的:
- Shewanella putrefaciens CN32.3による鉱物形成を調査する.
- このバクテリアが細胞内鉄酸化物を産生できるかどうかを判断する.
- バクテリアの鉄循環の新たな経路を探求する.
主な方法:
- 培養されたシェワネッラ putrefaciens CN32 二線フェリヒドライト.
- 水素・アルゴンの大気の中でバクテリアを育てた.
- 細胞内鉱物形成を分析した.
主要な成果:
- Shewanella putrefaciens CN32は,微小な細胞内鉄酸化物粒子を産生しました.
- ミネラル形成は,環境的に重要な鉄濃度で発生しました.
- バクテリアは,制御された細胞内バイオミネラライゼーションを示した.
結論:
- Shewanella putrefaciens CN32は,細胞内酸化鉄鉱物を形成することができます.
- これは,細菌の鉄循環のための新しい経路を表しています.
- この発見は,土壌と堆積物の環境における鉄の循環に関連しています.
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