2013 Fiscal Year Final Research Report
Dissimilatory Nitrate Reduction to Ammonium in Soil
| Project/Area Number |
24780055
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Plant nutrition/Soil science
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KAZUO Isobe 東京大学, 農学生命科学研究科, 助教 (30621833)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | DNRA / 硝酸還元 / 水田土壌 |
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| Research Abstract |
We studied about (1) which microorganisms have the ability to dissimilatorily reduce nitrate to ammonium (DNRA) in soil and (2) how important the reaction is in soils. Firstly, we investigated the DNRA activity of about 100 bacterial strains which have been isolated from the paddy and cropland soils. We found that bacteria belonging to the genus, Bacillus, Paenibacillus, Enterobavter, Ralstonia have the ability. We also found that glucose or alcohol as the electron donor increase the activity. However, significant DNRA was not observed in the paddy soil after the addition of glucose as the electron donor
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