SUNAMURA, Michinari

Assistant Professor
Geosphere and Biosphere Science Group

Office: Sci.Bldg.No.4-1515
TEL: +81-3-5841-4520
FAX: --


Research Field

Geomicrobiolgy, Microbial ecology

Current Research

My main research interests are to clarify the mechanisms and roles of microbial community in natural environment from the past to the present. To understand the mechanisms and roles, the microbial community structure should be investigated both qualitatively and quantitatively. For the quantification of microbial community, I have developed some microscopic-microbial methods based on the molecular technique or optical technology. These methods were applied to microbes in various seawater and marine sediment, i.e. high temperature (up to 300 °C) hydrothermal fluid, deep-sea hydrothermal plume, and aquatic/sediment sample from Tokyo Bay. Recently microbial biomass in rock and crust were estimated about the half of the whole biomass in the earth. To understand the ecology of these microbes, development of the detection method for these microbial cells are also on going.

Representative Publications

1. M. Sunamura, Y. Higashi, C. Miyako, J. Ishibashi and A. Maruyama, Two Bacteria phylotypes are predominant in the Suiyo Seamount hydrothermal plume,, Applied and Environmental Microbiology, 70 (2004) 1190-1198.
2. M. Sunamura, T. Tsuji, R. Kurane and A. Maruyama, Spectral imaging detection and counting of microbial cells in marine sediment,, Journal of Microbiological Methods, 53 (2003) 57-65.
3. M. Sunamura and A. Maruyama, A digital imaging procedure for seven-probe-labeling FISH (rainbow FISH). FEMS Microb. Ecol.