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The co-existence of <i>Microcoleus</i> strains with gene variations in the anatoxin-a biosynthesis cluster can explain the different toxin profiles observed in freshwater benthic mats
Abstract
Distinct anatoxin profiles can occur in Microcoleus-dominated benthic mats. Metagenomic data from a dihydrohomoanatoxin-a-producing mat revealed two co-occurring Microcoleus strains with variations in the anatoxin biosynthesis gene clust...
Publication · March 23, 2026
Draft genomes of multidrug-resistant <i>Acinetobacter baumannii</i> isolates from an agriculturally-dominated watershed and dairy cattle feces
Abstract
Acinetobacter baumannii is an opportunistic human pathogen that primarily affects individuals with compromised immune systems. Here, we report the draft genomes of six A. baumannii strains isolated from animal fecal sources and mixed-use...
Publication · March 23, 2026
Gene expression analysis of carbohydrate catabolism in <i>Leucoagaricus gongylophorus</i> LEU18496
Abstract
The fungal symbiont of leaf-cutter ant Atta mexicana, Leucoagaricus gongylophorus LEU18496 has the capability to produce enzymes such as cellulases, hemicellulases, and ligninases for plant biomass degradation. In this study, the fungus...
Publication · March 23, 2026
Phylogenomic and functional insights into <i>Staphylococcus shinii</i> from blueberry production environments: intra-species structure, probiotic traits and antimicrobial resistance
Abstract
Staphylococcus shinii is a recently proposed staphylococcal species identified in animal-associated microbiomes and fermented foods, with promising probiotic and biotechnological applications. However, its genomic diversity, functional t...
Publication · March 23, 2026
The global proliferation of aquatic, benthic <i>Microcoleus:</i> Taxonomy, distribution, toxin production, ecology, and future directions
Abstract
There have been sporadic reports of aquatic, benthic Microcoleus proliferations in freshwater rivers, lakes, and reservoirs for four decades, with reports increasing in frequency over the last twenty years, suggesting a possible rise in ...
Publication · March 23, 2026
Anatoxin biosynthesis gene abundance correlates with anatoxin concentration in freshwater benthic samples
Abstract
The abundance of the anaC gene, which is involved in anatoxin biosynthesis, correlated with anatoxin concentration (rs = 0.80, p < 0.0001) in Atlantic Canadian benthic freshwater samples. Average total anatoxins (100 μg g−1 by high resol...
Publication · March 23, 2026
Genomic characterization of coexisting anatoxin-producing and non-toxigenic <i>Microcoleus</i> subspecies in benthic mats from the Wolastoq, New Brunswick, Canada
Abstract
The presence of toxigenic benthic cyanobacteria in riverine ecosystems is an increasing concern around the world. In 2018, the death of three dogs along the Wolastoq (also known as the Saint John River) in New Brunswick, Canada, was attr...
Publication · March 23, 2026
Novel virulent and temperate cyanophages predicted to infect <i>Microcoleus</i> associated with anatoxin-producing benthic mats
Abstract
Cyanophages are crucial for regulating cyanobacterial populations, but their influence on anatoxin-producing Microcoleus mat dynamics remains unexplored. Here, we use metagenomics to explore phage presence in benthic mats from the Wolast...
Publication · March 23, 2026
The two-component regulatory system CenK–CenR regulates expression of a previously uncharacterized protein required for salinity and oxidative stress tolerance in <i>Sinorhizobium meliloti</i>
Abstract
Genes of unknown function constitute a considerable fraction of most bacterial genomes. In a Tn5-based search for stress response genes in the nitrogen-fixing facultative endosymbiont Sinorhizobium (Ensifer) meliloti, we identified a pre...
Publication · March 23, 2026
Amplicon-based and metagenomic approaches provide insights into toxigenic potential in understudied Atlantic Canadian lakes
Abstract
Cyanobacterial blooms and their toxigenic potential threaten freshwater resources worldwide. In Atlantic Canada, despite an increase of cyanobacterial blooms in the last decade, little is known about the toxigenic potential and the taxon...
Publication · March 23, 2026
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