2010 年 38 巻 4 号 p. 46-55
Marine hydrothermal fields are thought to be an environment where microorganisms thrived in early Earth. However, the physiological characteristics of these microorganisms are unknown. The study of microorganisms in the present hydrothermal fields will provide clues to elucidate the ancient ecosystem. For a better understanding of the ancient ecosystem, it is important to know the relationship between geological, geochemical and microbiological diversities of the present marine hydrothermal systems. Microbiological breakthroughs for both culture-dependent and -independent methods are needed to reveal the physiology of the microorganisms living in the present marine hydrothermal fields.