| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Research Abstract |
Previously, we have succeeded to isolate a novel arsenate-reducing bacterium Geobacter sp. OR-1 from Japanese paddy soil. In this study, we isolated a new arsenate-reducing bacterium Anaeromyxobacter sp. PSR-1 from arsenic-polluted soil. When these bacterial strains were inoculated into sterile paddy soil, arsenic release was reproduced. XANES analysis revealed that these strains were able to reduce arsenate adsorbed on soil solid phase. In addition, the strains could release arsenic adsorbed on ferrihydrite. We also determined draft genome sequences of these strains. Preliminary draft genome analysis of strain OR-1 identified two arsenic islands containing multiple arsA and arsD genes, and possible dissimilatory arsenate-reductase genes (arrAB) were also found.
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