2009 Fiscal Year Final Research Report

Possibility in the second substance of inter-species transfer within a novel methanogenic syntrophic community

Research Project

Project/Area Number	20780052
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Applied microbiology
Research Institution	Gifu University
Principal Investigator	NAKAMURA Kohei Gifu University, 応用生物科学部, 助教 (40456538)
Project Period (FY)	2008 – 2009
Keywords	メタン生成アーキア / 共生菌 / 微生物間相互作用
Research Abstract	A novel thermophilic methanogen strain RMAST was isolated from a formation water of a natural gas field. The methanogen was eventually obtained by applying co-cultivation technique with a syntrophic acetate-oxidizing bacterium. Strain RMAST grows solely on H2-CO2 and requires sources of amino acids which were probably supplied by the syntroph within the syntrophic culture for growth. Microbiological characteristics (Figure 2) of strain RMAST indicates its mosaic character that comprises features of three different genera within the order Methanobacteriales. We propose this strain as a type strain of novel methanogen belonging to the family Methanobacteriaceae.

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