Bicarbonate concentrations drive primary production by microbial dark matter in a deep subsurface hydrothermal aquifer

---

Coşkun Ö. K., Beren M., Özcan D., Günay S. D., Elkın V., Hoşgörmez H., ...Daha Fazla

18th International Symposium on Microbial Ecology, Lausanne, İsviçre, 14 - 19 Ağustos 2022, ss.1, (Özet Bildiri)

• Yayın Türü: Bildiri / Özet Bildiri
• Basıldığı Şehir: Lausanne
• Basıldığı Ülke: İsviçre
• Sayfa Sayıları: ss.1
• İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet

Özet

The continental deep subsurface environment is one of the largest ecosystems in terms of microbial abundance1, where cells are exposed to large changes in

concentrations of dissolved inorganic carbon (DIC) as they are transported through aquifers with potential to affect the deep carbon cycle via

chemoautotrophy2-6. However, direct links between HCO3

- concentrations and carbon fixation by specific microbial primary producers is lacking. Here, we use

quantitative 13C DNA stable isotope probing (qSIP) to provide the first quantitative measurements of microbial carbon fixation at different H13CO3

-

concentrations (1 – 10 mM) by specific operational taxonomic units in alkaline hydrothermal fluids from a deep (750 m below surface) subsurface carbonate

aquifer in Biga Peninsula, Turkey.