Japan Geoscience Union Meeting 2022

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[J] Poster

H (Human Geosciences ) » H-CG Complex & General

[H-CG29] Advanced life support systems with closed bio-ecosystems and thier applications

Mon. May 30, 2022 11:00 AM - 1:00 PM Online Poster Zoom Room (16) (Ch.16)

convener:Masanori Shinohara(Teikyo University of Science), convener:Hiroshi Katoh(Division of Plant Functional Genomics, Advanced Science Research Promotion Center, Organization for the Promotion of Regional Innovation, Mie University), Shunta Kimura(Institute of Space and Astronautical Science / Space Exploration Innovation Hub Center, Japan Aerospace Exploration Agency), convener:Midori Ong(University of Tsukuba), Chairperson:Masanori Shinohara(Teikyo University of Science), Shunta Kimura(Institute of Space and Astronautical Science / Space Exploration Innovation Hub Center, Japan Aerospace Exploration Agency), Kaori Tomita-Yokotani(Faculty of Life and Environmental Sciences University of Tsukuba)

11:00 AM - 1:00 PM

[HCG29-P03] The functions of extracellular polymeric substances in a terrestrial cyanobacterium, Nostoc sp. HK-01.

*Midori Ong1, Hiroshi Katoh2, Toshisada Suzuki3, Kaori Tomita-Yokotani1 (1.University of Tsukuba, 2.Mie University, 3.Kagawa University)

Keywords:Cysnobacteria, Extracellular polymeric substances

The cyanobacterial extracellular polymeric substances (EPS) protect their bodies from environmental stresses such as dryness, salt, freezing, and ultraviolet radiation. A terrestrial cyanobacterium, Nostoc sp. HK-01 has some morphologies, and tolerant to space environments such as vacuum, heavy particle beam, gamma ray and ultraviolet radiation. We recently found that some substances related to their growth and differentiation. In this study, we investigated the functions of Nostoc sp. HK-01’s EPS which related to their UVC tolerance, growth and differentiation.