Chemosynthetic symbionts of marine invertebrate animals are capable of nitrogen fixation

Chemosynthetic symbioses are partnerships between invertebrate animals and chemosynthetic bacteria. The latter are the primary producers, providing most of the organic carbon needed for the animal host's nutrition. We sequenced genomes of the chemosynthetic symbionts from the lucinid bivalve Lo...

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Vydáno v:	Nature microbiology Ročník 2; číslo 1; s. 16195
Hlavní autoři:	Petersen, Jillian M., Kemper, Anna, Gruber-Vodicka, Harald, Cardini, Ulisse, van der Geest, Matthijs, Kleiner, Manuel, Bulgheresi, Silvia, Mußmann, Marc, Herbold, Craig, Seah, Brandon K.B., Antony, Chakkiath Paul, Liu, Dan, Belitz, Alexandra, Weber, Miriam
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	London Nature Publishing Group UK 24.10.2016 Nature Publishing Group
Témata:	631/158/855 631/326/171/1878 631/326/2565/547 631/326/47 Animals Aquatic Organisms - microbiology Bacteria - enzymology Bacteria - genetics Biodiversity and Ecology Bivalvia - microbiology Chromadorea - microbiology Ecology, environment Ecosystems Environmental Sciences Gene Expression Profiling Genomes Global Changes Infectious Diseases Invertebrates Life Sciences Loripes lucinalis Medical Microbiology Microbiology Nitrogen Nitrogen Fixation Nitrogenase Nitrogenase - genetics Parasitology Proteome - analysis Proteomics Sequence Analysis, DNA Symbionts Symbiosis Virology
ISSN:	2058-5276, 2058-5276
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Popis
Shrnutí:	Chemosynthetic symbioses are partnerships between invertebrate animals and chemosynthetic bacteria. The latter are the primary producers, providing most of the organic carbon needed for the animal host's nutrition. We sequenced genomes of the chemosynthetic symbionts from the lucinid bivalve Loripes lucinalis and the stilbonematid nematode Laxus oneistus . The symbionts of both host species encoded nitrogen fixation genes. This is remarkable as no marine chemosynthetic symbiont was previously known to be capable of nitrogen fixation. We detected nitrogenase expression by the symbionts of lucinid clams at the transcriptomic and proteomic level. Mean stable nitrogen isotope values of Loripes lucinalis were within the range expected for fixed atmospheric nitrogen, further suggesting active nitrogen fixation by the symbionts. The ability to fix nitrogen may be widespread among chemosynthetic symbioses in oligotrophic habitats, where nitrogen availability often limits primary productivity. The chemosynthetic symbionts of the bivalve Loripes lucinalis and nematode Laxus oneistus are found to encode nitrogen fixation genes, with evidence for active nitrogen fixation.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 PMCID: PMC6872982
ISSN:	2058-5276 2058-5276
DOI:	10.1038/nmicrobiol.2016.195