Water Research, Journal Year: 2024, Volume and Issue: 265, P. 122286 - 122286
Published: Aug. 22, 2024
Language: Английский
Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 14
Published: Jan. 8, 2024
The marine environment has remained a source of novel biological molecules with diversified applications. ecological and diversity, along unique physical environment, have provided the evolutionary advantage to plant, animals microbial species thriving in ecosystem. In light fact that microorganisms frequently interact symbiotically or mutualistically higher including corals, fish, sponges, algae, this paper intends examine potential as niche for bacteria. This review aims analyze summarize modern literature data on biotechnological fungi bacteria producers wide range practically valuable products (surfactants, glyco-and lipopeptides, exopolysaccharides, enzymes, metabolites different activities: antimicrobial, antitumor, cytotoxic). Hence, study bioactive secondary from is need hour. scientific novelty lies first time, new resources obtaining biologically active natural — were generalized. investigates various kinds derived microorganisms, specifically focusing products. It provides summary regarding antibacterial, antimalarial, anticarcinogenic, antibiofilm, anti-inflammatory effects demonstrated by microorganisms. There currently great applied research standpoint human animal health.
Language: Английский
Citations
23
The ISME Journal, Journal Year: 2024, Volume and Issue: 18(1)
Published: Jan. 1, 2024
Abstract Microbial communities in full-scale engineered systems undergo dynamic compositional changes. However, mechanisms governing assembly of such microbes and succession their functioning genomic traits under various environmental conditions are unclear. In this study, we used the activated sludge anaerobic treatment four industrial wastewater plants as models to investigate niches temporal patterns community compositions. High-quality representative metagenome-assembled genomes revealed that taxonomic, functional, trait-based compositions were strongly shaped by selection, with replacement processes primarily driving variations taxonomic functional Plant-specific indicators associated system exhibited strong determinism trajectory directionality over time. The partitioning a co-abundance network according groups plant-specific indicators, together significant between-group differences traits, indicated occurrence niche differentiation. plant rich nutrient input high substrate removal efficiency faster predicted growth rate, lower guanine–cytosine content, smaller genome size, higher codon usage bias than other plants. individual plants, composition displayed more rapid was correlated kinetics systems. This study provides insights into ecological functions which will aid microbial management improve performance.
Language: Английский
Citations
6
The ISME Journal, Journal Year: 2024, Volume and Issue: 18(1)
Published: Jan. 1, 2024
Abstract Coastal shelf sediments are hot spots of organic matter mineralization. They receive up to 50% primary production, which, in higher latitudes, is strongly seasonal. Polar and temperate benthic bacterial communities, however, show a stable composition based on comparative 16S rRNA gene sequencing despite different microbial activity levels. Here, we aimed resolve this contradiction by identifying seasonal changes at the functional level, particular with respect algal polysaccharide degradation genes, combining metagenomics, metatranscriptomics, glycan analysis sandy surface from Isfjorden, Svalbard. Gene expressions diverse carbohydrate-active enzymes changed between winter spring. For example, β-1,3-glucosidases (e.g. GH30, GH17, GH16) degrading laminarin, an energy storage molecule algae, were elevated spring, while related α-glucan expressed both seasons maxima GH63, GH13_18, GH15). Also, expression GH23 involved peptidoglycan was prevalent, which line recycling biomass. Sugar extractions bulk low concentrations during but spring samples, glucose constituting largest fraction measured monosaccharides (84% ± 14%). In porewater, ~18-fold than overlying seawater (1107 484 vs. 62 101 μg C l−1) depleted glucose. Our data indicate that communities digest transform labile parts photosynthesis-derived particulate likely release more stable, glucose-depleted residual glycans unknown structures, quantities, residence times into ocean, thus modulating marine coastal waters.
Language: Английский
Citations
5
Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14
Published: March 30, 2023
The deep-sea covers over 70% of the Earth’s surface and harbors predominantly uncharacterized bacterial communities. Actinobacteria are major prokaryotic source bioactive natural products that find their way into drug discovery programs, is a promising biotechnologically relevant actinobacteria. Previous studies on actinobacteria in sediments were either regionally restricted or did not combine community characterization with analysis potential. Here we characterized actinobacterial communities upper layers from Arctic Atlantic (Azores Madeira) ocean basins, employing 16S rRNA metabarcoding, studied biosynthetic potential cultivable retrieved those samples. Metabarcoding showed composition varied between sampled regions, higher abundance samples but diversity ones. Twenty genera detected using as culture-independent method, while culture-dependent methods only allowed identification nine genera. Isolation resulted retrieval 44 isolates, mainly associated Brachybacterium , Microbacterium Brevibacterium Some these isolates identified specific region. Chemical extracts subsequently screened for antimicrobial, anticancer anti-inflammatory activities. Extracts two Streptomyces strains demonstrated activity against Candida albicans . Additionally, eight (obtained Rhodococcus isolates) significant at least one tested cancer cell lines (HepG2 T-47D). Furthermore, 15 RAW 264.4 model assay, no concomitant cytotoxic response. Dereplication molecular networking presence some metabolites known products, analyzed clusters show any match described responsible bioactivities. Overall, able to recover taxonomically diverse different bioactivities conjugation -independent allows better understanding environments, which important optimization approaches obtain novel chemically-rich isolates.
Language: Английский
Citations
11
Environmental Research, Journal Year: 2025, Volume and Issue: 268, P. 120809 - 120809
Published: Jan. 9, 2025
Language: Английский
Citations
0
Food Bioscience, Journal Year: 2025, Volume and Issue: 66, P. 106134 - 106134
Published: Feb. 14, 2025
Language: Английский
Citations
0
Microorganisms, Journal Year: 2025, Volume and Issue: 13(3), P. 679 - 679
Published: March 18, 2025
The distribution and assembly mechanisms of microorganisms in Antarctic lakes glaciers remain poorly understood, despite their ecological significance. This study investigates the bacterial diversity community composition glacier borehole meltwater samples from eastern Broknes Peninsula Larsemann Hills adjacent lake water East Antarctica using high—throughput 16S rRNA gene sequencing. results show that increased with depth, but remained lower than water. Significant compositional differences were observed between communities, higher relative abundances Actinobacteria, Bacteroidia, Cyanobacteriia, Verrucomicrobiae samples, while Alphaproteobacteria, Gammaproteobacteria, OLB14 (phylum Chloroflexi), Acidimicrobiia, Thermoleophilia more abundant samples. These attributed to distinct mechanisms: stochastic processes (ecological drift dispersal limitation) dominated lakes, both homogeneous dispersal) deterministic (homogeneous selection) played key roles boreholes. enhances our understanding patterns ecosystems, providing insights into microbial biodiversity biogeochemical cycling these extreme environments.
Language: Английский
Citations
0
Microorganisms, Journal Year: 2025, Volume and Issue: 13(4), P. 804 - 804
Published: April 1, 2025
The effect of agricultural practices on soil bacterial communities is not constant and depends a lot the climatic context, changes in characteristics, land use, strategy. Thus, knowledge about how different use systems Cerrado influence diversity taxonomic structure microbial under same type remains limited. In this objective work was to analyze compare two (cover crop potato cultivation) neighboring native area. For this, we used high-throughput amplicon sequencing 16S rRNA genes (metabarcoding) characterize community at levels area, an area with cover crops. Our data indicated significant impacts physicochemical properties enzymatic activity, which directly reflect dynamics communities. three phyla highest relative abundance areas were Proteobacteria, Actinobacteriota, Acidobacteriota. At class level, small variations observed among areas, while sequence variant (ASV) these more pronounced. alpha indices showed that are rich diverse. Bray–Curtis Jaccard distance-based PCoA demonstrated overlap present separation from cultivation silico prediction presented values functional compared others. our results provide holistic view can
Language: Английский
Citations
0
Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15
Published: Feb. 6, 2024
The sediment-water interfaces of cold seeps play important roles in nutrient transportation between seafloor and deep-water column. Microorganisms are the key actors biogeochemical processes this interface. However, knowledge microbiome interface limited. Here we studied microbial diversity potential metabolic functions by 16S rRNA gene amplicon sequencing at two active northern slope South China Sea, Lingshui Site F seeps. obviously different. areas, is found to be relatively low. Microbes associated with methane consumption enriched, possibly due large continuous eruptions fluids. Methane mainly mediated aerobic oxidation denitrifying anaerobic (DAMO). higher than Lingshui. Fluids from seepage mitigated methanotrophic bacteria cyclical oxic-hypoxic fluctuating where intense redox cycling carbon, sulfur, nitrogen compounds occurs. primary modes oxidation, along DAMO, sulfate-dependent (SAMO). To sum up, (AOM) may underestimated seep microenvironments. Our findings highlight significance AOM interdependence microorganisms their environments microenvironments, providing insights into that govern these unique ecological systems.
Language: Английский
Citations
3
Water Research, Journal Year: 2024, Volume and Issue: 266, P. 122352 - 122352
Published: Aug. 29, 2024
In a membrane bioreactor (MBR) system, in situ sludge reduction techniques induce fouling. To address this challenge, we incorporated rotating mesh carrier, which can adsorb organic matter and provide habitat for metazoans, into the anoxic tank of conventional anoxic/oxic-MBR (A/O-MBR) termed biological contactor-MBR (RBC-MBR), evaluated treatment performance. Over 151 days, lab-scale RBC-MBR A/O-MBR were used to treat municipal sewage. Both reactors showed similar COD NH
Language: Английский
Citations
3