Deciphering the supporter microbes that facilitate syntrophic degradation in methanogenic ecosystem

2016 Fiscal Year Final Research Report

• Project/Area Number: 26630250
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Civil and environmental engineering
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Narihiro Takashi 国立研究開発法人産業技術総合研究所, 生物プロセス研究部門, 主任研究員 (20421844)
• Co-Investigator(Renkei-kenkyūsha): TAMAKI Hideyuki 国立研究開発法人産業技術総合研究所, 生物プロセス研究部門, 主任研究員 (00421842) ; KAMAGATA Yoichi 国立研究開発法人産業技術総合研究所, 生物プロセス研究部門, 研究部門付 (70356814)
• Research Collaborator: LIU Wen-Tso イリノイ大学, 教授
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 微生物ゲノム / 嫌気共生細菌 / メタン生成菌 / シントロフィー / 環境動態

Outline of Final Research Achievements

In order to identify the metabolic function that promotes decomposition of organic substrates (e.g., propionate and butyrate) by "syntrophy" which is knows as a microbial interaction between syntrophic substrate metabolizers (syntrophs) and methanogenic archaea (methanogens), we aimed to elucidate the metabolic function of syntrophs and methanogens from their genomic information. As a result, we successfully identify the dominant microbial constituents that inhabit the syntrophy-associated methanogenic microbiota. The genomes of three butyrate-oxidizing syntrophs encode genes involved in degradation pathway of butyrate and biological energy conservation systems that require for the degradation. In conclusion, these metabolic functions contribute to the stabilization and promotion of biodegradation in anaerobic ecosystem.

Free Research Field

環境微生物学