Microcystin shapes the Microcystis phycosphere through community filtering and by influencing cross-feeding interactions DOI Creative Commons

Rebecca Große,

Markus Heuser,

Jonna E. Teikari

et al.

ISME Communications, Journal Year: 2024, Volume and Issue: 5(1)

Published: Dec. 24, 2024

The cyanobacterium Microcystis causes harmful algal blooms that pose a major threat to human health and ecosystem services, particularly due the prevalence of potent hepatotoxin microcystin (MC). With their pronounced EPS layer, colonies also serve as hub for heterotrophic phycosphere bacteria. Here, we tested hypothesis genotypic plasticity in its ability produce MC influences composition assembly microbiome. In an analysis individual natural bloom, observed significantly reduced richness community presence biosynthesis genes. A subsequent synthetic experiment with 21 bacterial strains co-cultivation either wild-type strain aeruginosa PCC 7806 or MC-free mutant ΔmcyB revealed not only tug-of-war between phototrophic bacteria, but reciprocal dominance two isolates genus Sphingomonas Flavobacterium. contrast, Agrobacterium isolate thrived equally well both consortia. substrate utilization tests, showed strongest dependence on exudates clear preference strain. Genome sequencing high potential complementary cross-feeding, no degradation. We postulate strain-specific functional traits, such perform glycolate oxidation, play crucial role cross-feeding interactions, is one determining factors interference inorganic carbon metabolism.

Language: Английский

Coalescence characteristics of free-living and particle-attached bacteria in a cascade river-reservoir system: A case study of the Jinsha River DOI
Dan Zhang,

Yufei Bao,

Yuchun Wang

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 374, P. 124088 - 124088

Published: Jan. 13, 2025

Language: Английский

Citations

0
Environmental drivers of microbial assembly and stability in lakes across biogeographical regions DOI Creative Commons

Ivana Stanić,

Katarina Kajan,

Lorena Selak

et al.

Ecological Indicators, Journal Year: 2025, Volume and Issue: 172, P. 113324 - 113324

Published: March 1, 2025

Language: Английский

Citations

0
Insights into cyanobacterial blooms through the lens of omics DOI Creative Commons
Ve Van Le, Quynh‐Giao Tran, So-Ra Ko

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 934, P. 173028 - 173028

Published: May 7, 2024

Cyanobacteria are oxygen-producing photosynthetic bacteria that convert carbon dioxide into biomass upon exposure to sunlight. However, favorable conditions cause harmful cyanobacterial blooms (HCBs), which the dense accumulation of at water surface or subsurface, posing threats freshwater ecosystems and human health. Understanding mechanisms underlying bloom formation is crucial for effective management. In this regard, recent advancements in omics technologies have provided valuable insights HCBs, raised expectations develop more control methods near future. This systematic literature review aims present genomic architecture, adaptive mechanisms, microbial interactions, ecological impacts HCBs through lens omics. Genomic analysis indicates genome plasticity cyanobacteria has enabled their resilience adaptation environmental changes. Transcriptomic investigations revealed use various strategies adapting stress. Additionally, metagenomic metatranscriptomic analyses emphasized significant role community regulating HCBs. Finally, we offer perspectives on potential opportunities further research field.

Language: Английский

Citations

3
Seasonal dynamics of free-living (FL) and particle-attached (PA) bacterial communities in a plateau reservoir DOI Creative Commons
Yang Yang,

Chen Chen,

Kai Yao

et al.

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: July 19, 2024

In terms of lifestyle, bacterioplankton can be classified as free-living (FL) and particle-attached (PA) forms, both play essential roles in biogeochemical cycling aquatic ecosystems. Structure, distribution, community assembly FL PA bacteria plateau riverine waterbodies are largely unknown. Therefore, we explored the seasonal dynamics FLand bacterial communities Wujiangdu reservoir, Yungui Plateau using 16S rRNA gene high-throughput sequencing. Results revealed there was a significant environmental heterogeneity reservoir seasonally. The dominant phylum Actinomycetota for Pseudomonadota bacteria. Species richness diversity higher autumn winter compared to spring summer. general, greater than FL, but with some temporal variations. turnover major contributor β-diversity lifestyles, differences were noticed between composition. Distinct co-occurrence network patterns implied that more connections exist bacteria, while complex networks parallel their stronger interactions biofilms on particles. Dispersal limitation driving force assembly. Deterministic processes relatively low importance, homogeneous selection heterogeneous Temperature most important driver dynamics, followed by nitrate Secchi depth This study allows better understanding variability different lifestyles reservoirs vulnerable rapidly changing environment, facilitating further microbial research related global warming eutrophication.

Language: Английский

Citations

3
Succession of particle-attached and free-living bacterial communities in response to microalgal dynamics induced by the biological cyanocide paucibactin A DOI Creative Commons
Ve Van Le, So-Ra Ko,

Yuna Shin

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 358, P. 142197 - 142197

Published: April 29, 2024

Microalgae, including cyanobacteria and eukaryotic algae, are hotspots of primary production play a critical role in global carbon cycling. However, these species often form blooms that poses threat to aquatic ecosystems. Although the use bacteria-derived cyanocides is regarded as an environmentally friendly method for controlling cyanobacterial blooms, only few studies have examined their potential impact on This study first explore response particle-attached (PA) free-living (FL) bacteria dynamics microalgal communities induced by biological cyanocide paucibactin A. The community were divided into two distinct phases [phase I (days 0-2) phase II 3-7)]. In I, A caused sudden decrease concentration. Phase was characterized increased growth microalgae (Scenedesmus, Pediastrum, Selenastrum, Coelastrum). stability bacterial contribution stochastic processes assembly more pronounced than I. triggered coincided with succession PA FL communities. lysis favored microbial organic matter degraders both (e.g., Aeromonas Rheinheimera) Vogesella) II, Lacibacter, Phycisphaeraceae, Hydrogenophaga Peredibacter, Prosthecobacter showed relative abundances. Overall, exhibited greater sensitivity sequential compared community. These results highlight need evaluating ecosystems when used control natural blooms.

Language: Английский

Citations

1
Distinct ecological niches and community dynamics: understanding free-living and particle-attached bacterial communities in an oligotrophic deep lake DOI

Guijuan Xie,

Chuanbo Sun,

Wenlei Luo

et al.

Applied and Environmental Microbiology, Journal Year: 2024, Volume and Issue: 90(7)

Published: July 24, 2024

ABSTRACT Oligotrophic deep-water lakes are unique and sensitive ecosystems with limited nutrient availability. Understanding bacterial communities within these is crucial for assessing ecosystem health, biogeochemical cycling, responses to environmental changes. In this study, we investigated the seasonal vertical dynamics of both free-living (FL) particle-attached (PA) bacteria in Lake Fuxian, a typical oligotrophic deep freshwater lake southeast China. Our findings revealed distinct FL PA communities, driven by similar physiochemical factors. exhibited higher α- β-diversity were enriched Proteobacteria, Cyanobacteria, Firmicutes, Patescibacteria, Planctomycetota, Verrucomicrobiota, while Actinobacteria Bacteroidota. showed enrichment putative functions related chemoheterotrophy aerobic anoxygenic photosynthesis, whereas fraction was intracellular parasites (mainly contributed Rickettsiales, Chlamydiales, Legionellales) nitrogen metabolism functions. Deterministic processes predominantly shaped assembly stochastic playing greater role fraction. Network analysis extensive species interactions, proportion positively correlated edges network, indicating mutualistic or cooperative interactions. Cyanobium , Comamonadaceae, Roseomonas identified as keystone taxa underscoring potential cooperation between autotrophic heterotrophic organic particle microhabitats. Overall, disparities diversity, community composition, function, network characteristics fractions highlight their adaptation ecological niches ecosystems. IMPORTANCE diversity microbial mechanisms, changes fundamental study aquatic ecology. fragile resources, rendering them highly susceptible fluctuations. Examining different types offers valuable insights into intricate mechanisms governing strategies across various scales. our investigation Fuxian China, explored two types: (PA). unveiled patterns bacteria, all subtleties provides insight thereby influencing overall functioning. Ultimately, research illuminates roles environments, contributing significantly broader comprehension stability health.

Language: Английский

Citations

1
Microbial nitrogen cycling in Microcystis colonies and its contribution to nitrogen removal in eutrophic Lake Taihu, China DOI

Ke Xie,

Yujing Wang,

Jingya Xue

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 954, P. 176323 - 176323

Published: Sept. 17, 2024

Language: Английский

Citations

0
Microcystin shapes the Microcystis phycosphere through community filtering and by influencing cross-feeding interactions DOI Creative Commons

Rebecca Große,

Markus Heuser,

Jonna E. Teikari

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 18, 2024

Abstract The cyanobacterium Microcystis causes harmful algal blooms (cyanoHABs) that pose a major threat to human health and ecosystem services, particularly due the prevalence of potent hepatotoxin microcystin. With their pronounced EPS layer, colonies also serve as hub for heterotrophic phycosphere bacteria. Here, we tested hypothesis genotypic plasticity in its ability produce microcystin influences composition assembly microbiome. In an analysis individual natural bloom, observed significantly reduced richness community presence biosynthesis genes. A subsequent synthetic experiment with 21 strains co-cultivation either wild-type strain M. aeruginosa PCC 7806 or microcystin-free mutant Δ mcyB revealed not only tug-of-war between phototrophic bacteria, but reciprocal dominance two isolates genus Sphingomonas Flavobacterium . contrast, Agrobacterium isolate thrived equally well both consortia. substrate utilization tests, showed strongest dependence on exudates clear preference strain. Genome sequencing high potential complementary cross-feeding, no degradation. We postulate strain-specific functional traits, such perform photorespiration vitamin B12, play crucial role cross-feeding interactions, is one determining factors interference inorganic carbon metabolism.

Language: Английский

Citations

0
Microcystin shapes the Microcystis phycosphere through community filtering and by influencing cross-feeding interactions DOI Creative Commons

Rebecca Große,

Markus Heuser,

Jonna E. Teikari

et al.

ISME Communications, Journal Year: 2024, Volume and Issue: 5(1)

Published: Dec. 24, 2024

The cyanobacterium Microcystis causes harmful algal blooms that pose a major threat to human health and ecosystem services, particularly due the prevalence of potent hepatotoxin microcystin (MC). With their pronounced EPS layer, colonies also serve as hub for heterotrophic phycosphere bacteria. Here, we tested hypothesis genotypic plasticity in its ability produce MC influences composition assembly microbiome. In an analysis individual natural bloom, observed significantly reduced richness community presence biosynthesis genes. A subsequent synthetic experiment with 21 bacterial strains co-cultivation either wild-type strain aeruginosa PCC 7806 or MC-free mutant ΔmcyB revealed not only tug-of-war between phototrophic bacteria, but reciprocal dominance two isolates genus Sphingomonas Flavobacterium. contrast, Agrobacterium isolate thrived equally well both consortia. substrate utilization tests, showed strongest dependence on exudates clear preference strain. Genome sequencing high potential complementary cross-feeding, no degradation. We postulate strain-specific functional traits, such perform glycolate oxidation, play crucial role cross-feeding interactions, is one determining factors interference inorganic carbon metabolism.

Language: Английский

Citations

0