Denitrification in foraminifera has an ancient origin and is complemented by associated bacteria

Woehle, ChristianUniv Kiel, Germany;Miltenyi Biotec BV & Co KG, Germany (författare)

Benthic foraminifera are unicellular eukaryotes that inhabit sediments of aquatic environments. Several foraminifera of the order Rotaliida are known to store and use nitrate for denitrification, a unique energy metabolism among eukaryotes. The rotaliid Globobulimina spp. has been shown to encode an incomplete denitrification pathway of bacterial origin. However, the prevalence of denitrification genes in foraminifera remains unknown, and the missing denitrification pathway components are elusive. Analyzing transcriptomes and metagenomes of 10 foraminiferal species from the Peruvian oxygen minimum zone, we show that denitrification genes are highly conserved in foraminifera. We infer the last common ancestor of denitrifying foraminifera, which enables us to predict the ability to denitrify for additional foraminiferal species. Additionally, an examination of the foraminiferal microbiota reveals evidence for a stable interaction with Desulfobacteraceae, which harbor genes that complement the foraminiferal denitrification pathway. Our results provide evidence that foraminiferal denitrification is complemented by the foraminifera-associated microbiome. The interaction of foraminifera with their resident bacteria is at the basis of foraminiferal adaptation to anaerobic environments that manifested in ecological success in oxygen depleted habitats.

Roy, Alexandra-SophieUniv Kiel, Germany (författare)
Glock, NicolaasGEOMAR Helmholtz Ctr Ocean Res Kiel, Germany;Univ Hamburg, Germany (författare)
Michels, JanUniv Kiel, Germany (författare)
Wein, TanitaUniv Kiel, Germany;Weizmann Inst Sci, Israel (författare)
Weissenbach, JuliaUniv Kiel, Germany(Swepub:lnu)juweaa (författare)
Romero, DennisInst Mar Peru, Peru (författare)
Hiebenthal, ClaasGEOMAR Helmholtz Ctr Ocean Res Kiel, Germany (författare)
Gorb, Stanislav N.Univ Kiel, Germany (författare)
Schoenfeld, JoachimGEOMAR Helmholtz Ctr Ocean Res Kiel, Germany (författare)
Dagan, TalUniv Kiel, Germany (författare)
Univ Kiel, Germany;Miltenyi Biotec BV & Co KG, GermanyUniv Kiel, Germany (creator_code:org_t)

Ingår i:Proceedings of the National Academy of Sciences of the United States of America: National Academy of Science119:250027-84241091-6490

Av författaren/redakt...: Woehle, Christia ...; Roy, Alexandra-S ...; Glock, Nicolaas; Michels, Jan; Wein, Tanita; Weissenbach, Jul ...; visa fler...; Romero, Dennis; Hiebenthal, Claa ...; Gorb, Stanislav ...; Schoenfeld, Joac ...; Dagan, Tal; visa färre...

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