Japan Geoscience Union Meeting 2019

Presentation information

[J] Oral

B (Biogeosciences ) » B-BC Biogeochemistry

[B-BC03] Interrelation between Life, Water, Mineral, and Atmosphere

Tue. May 28, 2019 3:30 PM - 5:00 PM 201A (2F)

convener:Takeshi Kakegawa(Graduate School of Science, Tohoku University), Tadashi Yokoyama(Graduate School of Integrated Arts and Sciences, Hiroshima University), Keisuke Fukushi(Institute of Nature & Environmental Technology, Kanazawa University), Fumito Shiraishi(Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University), Chairperson:Takeshi Kakegawa, Fumito Shiraishi(Hiroshima Univ.)

4:15 PM - 4:30 PM

[BBC03-10] New microbial ecology results from genome centered metagenomics studies of iron carbonate and sulfidic hot springs

*Shawn E McGlynn1, Lewis Ward2, Takeshi Kakegawa3, Yuichiro Ueno1, Mayuko Nakagawa1 (1.Earth-Life Science Institute, Tokyo Institute of Technology, 2.Harvard University, 3.Tohoku University)

Keywords:metagenomics, microbial ecology, geochemistry, geobiology

The ability to recover microbial genomes from metagenomic datasets has revolutionized how we understand microbial inhabitants in the environment, and is a powerful way to develop detailed hypotheses of community function and evolution. In this talk, I will discuss recent genomes we have recovered from two iron rich, carbonate hot springs in Japan, and contrast these to observations in low iron, sulfidic springs. Surprisingly, despite the different chemistry, some overall trends in phylogeny and physiology are observed, however water chemistry differences such as salinity and the availability of ferrous iron does alter the observed microbial inhabitants and physiologies.
These overall results will be discussed within the context of the possible ability to recognize microbial inhabitation on Earth through time.