Comparative Genomics Insights Into the Evolutionary Disparities Between Nitroplast‐Evolved Ecotype UCYN ‐ A2 and Its Closest Relative UCYN ‐ A1 [PDF]
Ecology and EvolutionUCYN‐A is a phenomenal diazotrophic cyanobacterium with significant ecological importance. UCYN‐A1 and UCYN‐A2 are the two most abundant ecotypes. Recently, the striking discovery of nitroplast, a novel N2‐fixing organelle in cultured B.
Xianzhao Kan, Shiyun Han
exaly +6 more sources
Open ocean and coastal strains of the N2-fixing cyanobacterium UCYN-A have distinct transcriptomes [PDF]
PLoS ONE, 2023 Decades of research on marine N2 fixation focused on Trichodesmium, which are generally free-living cyanobacteria, but in recent years the endosymbiotic cyanobacterium Candidatus Atelocyanobacterium thalassa (UCYN-A) has received increasing attention ...
Jonathan P Zehr, Jonathan D Magasin
exaly +10 more sources
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 [PDF]
Frontiers in Microbiology, 2023 The multiple symbiotic partnerships between closely related species of the haptophyte algae Braarudosphaera bigelowii and the nitrogen-fixing cyanobacteria Candidatus Atelocyanobacterium thalassa (UCYN-A) contribute importantly to the nitrogen and carbon
Jonathan P Zehr, Kendra Turk-Kubo
exaly +13 more sources
Critical Role of Light in the Growth and Activity of the Marine N2-Fixing UCYN-A Symbiosis [PDF]
Frontiers in Microbiology, 2021 The unicellular N2-fixing cyanobacteria UCYN-A live in symbiosis with haptophytes in the Braarudosphaera bigelowii lineage. Maintaining N2-fixing symbioses between two unicellular partners requires tight coordination of multiple biological processes ...
Marine Landa +2 more
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Distributions and Abundances of Sublineages of the N2-Fixing Cyanobacterium Candidatus Atelocyanobacterium thalassa (UCYN-A) in the New Caledonian Coral Lagoon [PDF]
Frontiers in Microbiology, 2018 Nitrogen (N2) fixation is a major source of nitrogen that supports primary production in the vast oligotrophic areas of the world’s oceans. The Western Tropical South Pacific has recently been identified as a hotspot for N2 fixation. In the Noumea lagoon
Jonathan P Zehr +2 more
exaly +11 more sources
Coastal upwelling enhances abundance of a symbiotic diazotroph (UCYN-A) and its haptophyte host in the Arctic Ocean [PDF]
Frontiers in Marine Science, 2022 The apparently obligate symbiosis between the diazotroph Candidatus Atelocyanobacterium thalassa (UCYN-A) and its haptophyte host, Braarudosphaera bigelowii, has recently been found to fix dinitrogen (N2) in polar waters at rates (per cell) comparable to
Peigen Lin +2 more
exaly +6 more sources
Global phylogeography and microdiversity of the marine diazotrophic photoautotrophs Trichodesmium and UCYN-A [PDF]
mSpherePhotoautotrophic diazotrophs, specifically the genera Trichodesmium and UCYN-A, play a pivotal role in marine nitrogen cycling through their capacity for nitrogen fixation.
Angie Nguyen +3 more
doaj +4 more sources
Enhancing Role of Nitrogen Fixation in Biogeochemical Cycles of the Pacific Arctic. [PDF]
Glob Chang BiolComposite mean fields of sea surface temperature and sea‐ice distribution for September during 2015–2024, comparing years with high (2015, 2016, 2021) and low (2017, 2019, 2023) sea‐ice coverage. Earlier sea‐ice melt can promote the advection of diazotrophs (UCYN‐A2 and their haptophyte hosts) from the Bering Sea into the Beaufort Sea basin, where ...
Shiozaki T +5 more
europepmc +2 more sources
Integrating Stochastic and Deterministic Process in the Biogeography of N2-Fixing Cyanobacterium Candidatus Atelocyanobacterium Thalassa [PDF]
Frontiers in Microbiology, 2021 UCYN-A is one of the most widespread and important marine diazotrophs. Its unusual distribution in both cold/warm and coastal/oceanic waters challenges current understanding about what drives the biogeography of diazotrophs.
Liuyang Li +8 more
doaj +2 more sources
Protein import into bacterial endosymbionts and evolving organelles. [PDF]
FEBS JThe acquisition of bacterial endosymbionts by ancient host cells followed by massive adaptation of the partners gave rise to mitochondria and plastids. Today, various systems with younger and less integrated endosymbionts provide insights into the initial steps in the endosymbiont to organelle transition.
Sørensen MES +3 more
europepmc +2 more sources