2016 Fiscal Year Final Research Report
Community analysis of sulfate-reducing bacteria during methanogenic process in paddy field soil
Project/Area Number |
26450077
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Plant nutrition/Soil science
|
Research Institution | Nagoya University |
Principal Investigator |
|
Co-Investigator(Renkei-kenkyūsha) |
ASAKAWA Susumu 名古屋大学, 大学院生命農学研究科, 教授 (50335014)
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Keywords | 水田土壌 / 硫酸還元菌 / 水素生成 |
Outline of Final Research Achievements |
This study aimed to reveal community structure of sulfate-reducing bacteria and their roles in paddy field soil. Community analysis showed that diverse sulfate-reducing bacteria including uncultured and unknown members inhabited paddy field soils and the composition and dynamics were different depending on the fields. Analysis of hydA gene, which encode [FeFe]-hydrogenase known as an H2-producing enzyme, and the transcripts of a sulfate-reducing bacterium isolated from a paddy field soil revealed that the bacterium differently regulated transcription of two hydA paralogs between under sulfate-reducing and H2-producing conditions. In addition, hydA genes related to sulfate-reducing bacteria were transcribed in an anoxic paddy soil. These findings indicated that sulfate-reducing bacteria are involved in the anaerobic decomposition of organic material in paddy field soil as one of the key H2-producers.
|
Free Research Field |
土壌微生物学
|