ArticleThe ISME journal2016
Global distribution and vertical patterns of a prymnesiophyte-cyanobacteria obligate symbiosis.
Article in The ISME journal, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.
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Who cites it
36 citing papers in PubMed, 87 citations in OpenAlex.
- Particle-associated diazotrophs drive nitrogen fixation in Arctic subsurface waters of the Barents Sea.Nature communications · 2026Article
- Diel remodeling and cellular integration of the nitroplast.bioRxiv : the preprint server for biology · 2026Article
- Diverse Patescibacteria assemblages and prevalence of ultra-small free-living Parcubacteria along a subterranean estuary.mSystems · 2025Article
- Article
- Comparative Genomics Insights Into the Evolutionary Disparities Between Nitroplast-Evolved Ecotype UCYN-A2 and Its Closest Relative UCYN-A1.Ecology and evolution · 2025Article
- Myochromella unveiled: exploring its global distribution through a public database of amplicons.BMC microbiology · 2025Article
- Diverse community of rhizobia-diatom symbioses fixes nitrogen in the South Pacific gyre.ISME communications · 2025Article
- Metagenomics reveals the genetic diversity between sublineages of UCYN-A and their algal host plastids.ISME communications · 2024Article
- The active free-living bathypelagic microbiome is largely dominated by rare surface taxa.ISME communications · 2024Article
- Microevolutionary patterns in ecotypes of the symbiotic cyanobacterium UCYN-A revealed from a Northwest Atlantic coastal time series.Science advances · 2023Article
- Symbiotic UCYN-A strains co-occurred with El Niño, relaxed upwelling, and varied eukaryotes over 10 years off Southern California.ISME communications · 2023Article
- Primer design for the amplification of the ammonium transporter genes from the uncultured haptophyte algal species symbiotic with the marine nitrogen-fixing cyanobacterium UCYN-A1.Frontiers in microbiology · 2023Article
- Open ocean and coastal strains of the N2-fixing cyanobacterium UCYN-A have distinct transcriptomes.PloS one · 2023Article
- Article
- UCYN-A/haptophyte symbioses dominate NISME communications · 2021Article
- Global distribution patterns of marine nitrogen-fixers by imaging and molecular methods.Nature communications · 2021Article
- Elucidation of trophic interactions in an unusual single-cell nitrogen-fixing symbiosis using metabolic modeling.PLoS computational biology · 2021Article
- Critical Role of Light in the Growth and Activity of the Marine NFrontiers in microbiology · 2021Article
- Integrating Stochastic and Deterministic Process in the Biogeography of NFrontiers in microbiology · 2021Article
- Unexpected presence of the nitrogen-fixing symbiotic cyanobacterium UCYN-A in Monterey Bay, California.Journal of phycology · 2020Article
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Authors and funding
10 authors at 7 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A marine symbiosis has been recently discovered between prymnesiophyte species and the unicellular diazotrophic cyanobacterium UCYN-A. At least two different UCYN-A phylotypes exist, the clade UCYN-A1 in symbiosis with an uncultured small prymnesiophyte and the clade UCYN-A2 in symbiosis with the larger Braarudosphaera bigelowii. We targeted the prymnesiophyte-UCYN-A1 symbiosis by double CARD-FISH (catalyzed reporter deposition-fluorescence in situ hybridization) and analyzed its abundance in surface samples from the MALASPINA circumnavigation expedition. Our use of a specific probe for the prymnesiophyte partner allowed us to verify that this algal species virtually always carried the UCYN-A symbiont, indicating that the association was also obligate for the host. The prymnesiophyte-UCYN-A1 symbiosis was detected in all ocean basins, displaying a patchy distribution with abundances (up to 500 cells ml(-1)) that could vary orders of magnitude. Additional vertical profiles taken at the NE Atlantic showed that this symbiosis occupied the upper water column and disappeared towards the Deep Chlorophyll Maximum, where the biomass of the prymnesiophyte assemblage peaked. Moreover, sequences of both prymnesiophyte partners were searched within a large 18S rDNA metabarcoding data set from the Tara-Oceans expedition around the world. This sequence-based analysis supported the patchy distribution of the UCYN-A1 host observed by CARD-FISH and highlighted an unexpected homogeneous distribution (at low relative abundance) of B. bigelowii in the open ocean. Our results demonstrate that partners are always in symbiosis in nature and show contrasted ecological patterns of the two related lineages.
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