Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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Research Abstract |
The objectives of this study were to investigate, 1) effects of diphenylarsinic acid (DPAA) on microbial community structures and 2) factors affecting biotransformation of DPAA, in anaerobic soils. As a result, the presence of DPAA did not distinctly change soil bacterial and archaeal community structures under submerged and anaerobic conditions. The microbial transformation of DPAA in soil was enhanced under sulfate-reducing conditions and diphenylthioarsinic acid (DPTA) was found as a major metabolite. Participation of sulfate-reducing bacteria in the transformation of DPAA to DPTA is predicted.
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