Results 81 to 90 of about 39,347 (165)

Environmental and Spatial Processes Drive the Phylogenetic Diversity and Structure of Planktonic Microeukaryotes Revealed by 18S rDNA Metabarcoding in a Tropical Floodplain

open access: yesEnvironmental DNA, Volume 8, Issue 3, May–June 2026.
The community structure of photosynthetic planktonic microeukaryotes in the floodplain lakes of the Tocantins‐Araguaia River basin is influenced by a combination of environmental filters and spatial processes. Phylogenetic information from this community highlights the importance of conserving less degraded areas to preserve the evolutionary diversity ...
Jocilaine Santos de Jesus   +8 more
wiley   +1 more source

Cyanate Assimilation by the Alkaliphilic Cyanide-Degrading Bacterium Pseudomonas pseudoalcaligenes CECT5344: Mutational Analysis of the cyn Gene Cluster [PDF]

open access: yes, 2019
The alkaliphilic bacterium Pseudomonas pseudoalcaligenes CECT5344 can grow with cyanate, cyanide, or cyanide-containing industrial residues as the sole nitrogen source, but the assimilation of cyanide and cyanate takes place through independent pathways.
Cabello, Purificación   +5 more
core   +1 more source

Functional Characterization of the FNT Family Nitrite Transporter of Marine Picocyanobacteria

open access: yesLife, 2015
Many of the cyanobacterial species found in marine and saline environments have a gene encoding a putative nitrite transporter of the formate/nitrite transporter (FNT) family.
Shin-ichi Maeda   +4 more
doaj   +1 more source

Microcosm experiments reveal source‐specific impacts of atmospheric aerosols on plankton communities and organic matter in the sea surface microlayer

open access: yesLimnology and Oceanography, Volume 71, Issue 5, May 2026.
Abstract The impact of atmospheric deposition on marine ecosystems requires consideration of the interfacial processes within the sea surface microlayer, the uppermost layer at the air–sea interface. This study examines the impact of anthropogenic and biomass burning aerosol particles on the plankton community structure and organic matter accumulation ...
Andrea Milinković   +14 more
wiley   +1 more source

Divergent responses of the diatom Thalassiosira weissflogii to ocean acidification during light and dark periods

open access: yesLimnology and Oceanography Letters, Volume 11, Issue 3, May 2026.
Abstract Given the limited understanding of discrepancies in responses of diatoms to ocean acidification (OA), we comparatively investigated the physiological and transcriptional performances of a diatom Thalassiosira weissflogii acclimated to OA (pHt drop of 0.35–0.41) between day and night periods.
Guang Gao   +3 more
wiley   +1 more source

Bias in culture-independent assessments of microbial biodiversity in the global ocean [PDF]

open access: yes, 2009
On the basis of 16S rRNA gene sequencing, the SAR11 clade of marine bacteria has almost universal distribution, being detected as abundant sequences in all marine provinces. Yet SAR11 sequences are rarely detected in fosmid libraries, suggesting that the
Anna Oliver   +6 more
core   +1 more source

Thiol post‐translational modifications modulate allosteric regulation of the OpcA–G6PDH complex through conformational gate control

open access: yesProtein Science, Volume 35, Issue 5, May 2026.
Abstract In cyanobacteria, the redox‐sensitive protein OpcA acts as a metabolic switch for G6PDH, enabling rapid adjustment of reducing power generation from glycogen catabolism and thereby precisely regulating carbon flux between anabolic and catabolic pathways.
Hoshin Kim   +7 more
wiley   +1 more source

The Curious Case of CysE: Diversity and Distribution of Serine Acetyltransferases in Bacteria

open access: yesProteins: Structure, Function, and Bioinformatics, Volume 94, Issue 5, Page 1092-1103, May 2026.
ABSTRACT Serine acetyltransferase (CysE) is a member of the left‐handed β‐helix family of acetyltransferases that catalyze the rate limiting step in de novo cysteine biosynthesis. There are two isoforms of CysE that differ in length, with the shorter isoform lacking approximately 76 amino acids at the N‐terminus of the protein from the serine ...
Keely E. A. Oldham   +3 more
wiley   +1 more source

Origin and evolution of water oxidation before the last common ancestor of the Cyanobacteria [PDF]

open access: yes, 2015
Photosystem II, the water oxidizing enzyme, altered the course of evolution by filling the atmosphere with oxygen. Here, we reconstruct the origin and evolution of water oxidation at an unprecedented level of detail by studying the phylogeny of all D1 ...
A. William Rutherford   +126 more
core   +1 more source

Microbial Controls on Carbon Pump Partitioning in the Subtropical North Atlantic: Stoichiometry and Nutrient Limitation Across a Basin‐Scale Transect

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 5, May 2026.
Abstract The subtropical North Atlantic is a key region for ocean carbon cycling despite its relatively small spatial extent. Here we present a high‐resolution transect (23°–27°N; ∼2° longitude spacing) across the North Atlantic Subtropical Gyre, integrating physical, chemical, and microbial observations to examine how hydrography and nutrient ...
Lukas Marx   +5 more
wiley   +1 more source

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