*Julio Castillo¹, Yohey Suzuki², Hiroshi Ogasawara³, Yasuo Yabe⁴ (1.Department of Microbiology and Biochemistry, University of the Free State, South Africa, 2.Department of Earth and Planetary Science, The University of Tokyo, 3.College of Science and Engineering, Ritsumeikan University, 4.Graduate School of Science, Tohoku University)