2013 Fiscal Year Final Research Report
Development of a biological rare-metal-concentrating system driven by light and understanding of its metal kinetics using metallomics
| Project/Area Number |
23360362
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Biofunction/Bioprocess
|
|---|
| Research Institution | Utsunomiya University |
|---|
Principal Investigator |
MAEDA Isamu 宇都宮大学, 農学部, 准教授 (10252701)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
WATANABE Masanori 山形大学, 農学部, 准教授 (20320020)
TAKAHASHI Michiko 宇都宮大学, 農学部, 准教授 (90345182)
|
|---|
| Project Period (FY) |
2011-04-01 – 2014-03-31
|
| Keywords | 資源循環 / レアメタル / 生物濃縮 / 光合成細菌 / モリブデン / 細胞凝集 / ニトロゲナーゼ |
|---|
| Research Abstract |
The technological development to concentrate industrially important rare metals from solution with low concentrations by photosynthesis bacteria and to collect such metals in the form of bacterial cells has been conducted. Among such rare metals, molybdenum is an element especially indispensable for the function of vegetable nitrate reductases. This study revealed that during cultivation of photosynthesis bacteria, the metal compositional ratio in cells changed markedly by the presence or absence of an inorganic form of nitrogen, and molybdenum could be specifically concentrated by removal of the nitrogen source. The photosynthetic bacterial cells that accumulated molybdenum with high contents could be valuable as a bio-material to provide molybdenum to agricultural land.
|
