Environmental microbiology最新文献_第7页

Saprotrophic Capabilities of Neurospora crassa on Charred Plant Biomass 粗草神经孢子虫对烧焦植物生物量腐养能力的研究

IF 4 2区生物学

Environmental microbiology Pub Date : 2025-06-24 DOI: 10.1111/1462-2920.70132

Hunter J. Simpson, Jonathan S. Schilling

{"title":"Saprotrophic Capabilities of Neurospora crassa on Charred Plant Biomass","authors":"Hunter J. Simpson, Jonathan S. Schilling","doi":"10.1111/1462-2920.70132","DOIUrl":"10.1111/1462-2920.70132","url":null,"abstract":"Neurospora crassa is a popular model organism for laboratory research, yet its natural ecology remains mysterious. Its proliferation on charred plant biomass (wood and grasses) in fire-affected environments is often linked to the heat tolerance or heat−/chemical-induced germination of N. crassa spores; however, this link is not consistent across ecosystems or substrate types. Another possible, yet unvalidated, explanation is that N. crassa has an enhanced capacity for degrading charred (i.e., pyrolyzed) plant biomass. We assessed this adaptation for N. crassa by quantifying the decay of wood and grasses that were pyrolyzed to relevant extents (untreated, heated at 225°C or 350°C for 20 min) and by comparing this decay with non-fire-associated fungi. Neurospora crassa did not have an enhanced ability to degrade pyrolyzed substrates. Additionally, N. crassa struggled to degrade any wood substrate (< 6% mass loss) but did degrade untreated grasses (> 20% mass loss). These results, paired with chemical analyses of substrates pre- and post-decay, support a fire-response strategy for N. crassa, rather than a fire-adaptive ability to degrade charred substrates. This fungus likely proliferates on charred biomass by rapidly colonising heat-sterilised substrates after heat- or smoke-induced spore germination and then consuming unpyrolyzed lignocellulose beneath a charred exterior.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 6","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70132","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New Insights Into Epiphytic Biofilm Formation, Composition, and Their Role in Submerged Macrophyte Decline Under Environmental Pollution 附生生物膜的形成、组成及其在环境污染下沉水植物衰退中的作用的新认识

IF 4 2区生物学

Environmental microbiology Pub Date : 2025-06-24 DOI: 10.1111/1462-2920.70121

Jiaqing Xu, Juan Pablo Pacheco Esnal, Ling Jin, Qihang Wu, Changqun Duan, Ying Pan, Torben L. Lauridsen

{"title":"New Insights Into Epiphytic Biofilm Formation, Composition, and Their Role in Submerged Macrophyte Decline Under Environmental Pollution","authors":"Jiaqing Xu, Juan Pablo Pacheco Esnal, Ling Jin, Qihang Wu, Changqun Duan, Ying Pan, Torben L. Lauridsen","doi":"10.1111/1462-2920.70121","DOIUrl":"10.1111/1462-2920.70121","url":null,"abstract":"Over evolutionary time, submerged macrophytes and their epiphytic biofilms have developed complex interactions, particularly mutualistic interactions. However, environmental pollution can alter biofilms, potentially shifting their influence from supportive to neutral or even inhibitory. This change may be one of the significant driving factors for the decline of submerged macrophytes, yet a systematic review of this phenomenon is still lacking. To this end, we examine the formation and composition of epiphytic biofilms, summarize their effects on submerged macrophyte growth in freshwater lakes, and discuss how they mediate plant changes under increasing exposure to environmental pollution. Epiphytic biofilms, composed of complex biotic and abiotic components, influence submerged macrophytes by modifying light conditions and gas exchange, modulating nutrient competition and antioxidant responses, and releasing allelopathic substances; the magnitude of these effects varies with the biofilm's composition. Environmental pollution might favor resistant or fast-growing species that better compete for nutrients, impair light capture and gas exchange, and release harmful allelopathic substances. This diminishes the beneficial effects of epiphytic biofilms on submerged macrophytes, sometimes even resulting in detrimental impacts. This review examines how environmental pollution alters epiphytic biofilm composition and influences submerged macrophyte communities, providing novel insights into the dynamics of submerged macrophyte communities.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 6","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70121","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phytoplankton Exhibit Diverse Responses to Different Phases of Upwelling in the California Current System 浮游植物对加利福尼亚洋流系统中不同阶段的上升流表现出不同的反应

IF 4 2区生物学

Environmental microbiology Pub Date : 2025-06-24 DOI: 10.1111/1462-2920.70130

Yuan Yu Lin, Olivia Torano, Emily Pierce, Claire Till, Matthew Hurst, Astrid Schnetzer, Harvey Seim, Adrian Marchetti

{"title":"Phytoplankton Exhibit Diverse Responses to Different Phases of Upwelling in the California Current System","authors":"Yuan Yu Lin, Olivia Torano, Emily Pierce, Claire Till, Matthew Hurst, Astrid Schnetzer, Harvey Seim, Adrian Marchetti","doi":"10.1111/1462-2920.70130","DOIUrl":"10.1111/1462-2920.70130","url":null,"abstract":"<div>\u0000 \u0000 Eastern boundary upwelling currents are some of the most biologically productive and diverse regions in the world's oceans. Driven by equatorward winds and Ekman transport, surface waters are transported offshore and replaced by cold, nutrient-rich deep waters that seed extensive phytoplankton blooms. Studying phytoplankton community succession and physiological acclimation during the initial stages of upwelling is critical to building a comprehensive understanding of phytoplankton responses to upwelling in these important regions. Additionally, factors like lateral transport, seed population dynamics and physiological and molecular shifts are conducive to shaping the community assemblage and primary productivity. This study examines how phytoplankton gene expression and resulting physiology change between early and later phases of upwelling. By incorporating metatranscriptomic analyses and stable isotope incubations to measure nutrient uptake kinetics into our assessment of early and later upwelling stages, we observed variability in phytoplankton assemblages and differential gene expression of phytoplankton that were de-coupled from their physiology. We show that the gene expression response to a fresh upwelling event precedes their physiological response. Ultimately, understanding how phytoplankton change through the course of an upwelling event is critical to assessing their importance to regional biological rate processes, trophic systems and resulting biogeochemistry.\u0000 </div>","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 6","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Expanded Diversity of Microbial Groups Capable of Anaerobic Pyrite Reduction and Assimilation of Dissolution Products 能够厌氧硫铁矿还原和溶解产物同化的微生物群的扩大多样性

IF 4 2区生物学

Environmental microbiology Pub Date : 2025-06-22 DOI: 10.1111/1462-2920.70125

Eric S. Boyd, Devon Payne

{"title":"Expanded Diversity of Microbial Groups Capable of Anaerobic Pyrite Reduction and Assimilation of Dissolution Products","authors":"Eric S. Boyd, Devon Payne","doi":"10.1111/1462-2920.70125","DOIUrl":"10.1111/1462-2920.70125","url":null,"abstract":"Pyrite, the most abundant iron sulfide mineral in the Earth's crust, has traditionally been considered as a sink for iron and sulfur in the absence of oxygen. Recent research, however, has shown that anaerobic methanogenic archaea can reductively dissolve pyrite and assimilate its products as sources of iron and sulfur. This study explores whether other anaerobic bacteria, including fermentative, nitrate-, iron oxide-, fumarate-, and sulfate-respiring bacteria, can also reduce pyrite and use its dissolution products as sources of iron and sulfur. Results indicate that heterotrophic bacteria respiring fumarate or sulfate, or fermenting organic carbon, can reduce pyrite and assimilate released iron and sulfur. In contrast, nitrate- or iron oxide-respiring cells did not reduce pyrite, suggesting that microbial pyrite reduction is metabolism-specific. All strains capable of reducing pyrite could also use mackinawite as an iron and sulfur source. With the exception of fermentative Bacteroides, strains did not require direct contact with pyrite to reduce the mineral, indicating extracellular electron transfer via electron shuttles. These findings expand the known diversity of microbial groups capable of pyrite reduction and highlight the mineral's lability in various anaerobic environments, with potential implications for the biogeochemical cycles of iron, sulfur, carbon, and oxygen.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 6","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70125","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144339267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unravelling Biodiversity, Assembly Mechanisms and Coexistence Patterns of Abundant and Rare Microeukaryotes in Water and Sediment: New Insights From Volcanic Lakes in Arxan Geopark 水体和沉积物中丰富和稀有微真核生物的生物多样性、组装机制和共存模式：来自Arxan地质公园火山湖的新见解

IF 4 2区生物学

Environmental microbiology Pub Date : 2025-06-22 DOI: 10.1111/1462-2920.70129

Zhen Shen, Jianying Chao, Xingchen Li, Shuo Li, Dunping Sun, Jian Li, Yi Gong, Keqiang Shao, Zhijun Gong, Xiangming Tang

{"title":"Unravelling Biodiversity, Assembly Mechanisms and Coexistence Patterns of Abundant and Rare Microeukaryotes in Water and Sediment: New Insights From Volcanic Lakes in Arxan Geopark","authors":"Zhen Shen, Jianying Chao, Xingchen Li, Shuo Li, Dunping Sun, Jian Li, Yi Gong, Keqiang Shao, Zhijun Gong, Xiangming Tang","doi":"10.1111/1462-2920.70129","DOIUrl":"10.1111/1462-2920.70129","url":null,"abstract":"<div>\u0000 \u0000 Volcanic lakes are unique ecosystems often characterised by distinct physicochemical conditions that shape microbial biodiversity and community dynamics. However, the ecological roles, biodiversity, coexistence patterns, and assembly mechanisms of abundant and rare microeukaryotic biospheres in these environments remain poorly understood. Here, we investigated their distinct patterns in water and sediment from volcanic lakes in Arxan Geopark, China. Our findings demonstrated that sediment harboured significantly higher microbial biodiversity than water, with rare microeukaryotes exhibiting greater diversity than abundant microeukaryotes in both habitats. In sediment, biodiversity was predominantly driven by water content (WC) and total phosphorus (TP), whereas in water, temperature, pH, TP and loss on ignition (LOI) played pivotal roles. Abundant biosphere contributed more to community stability, while rare biosphere showed greater sensitivity to environmental fluctuations. Community assembly processes also varied: water communities were shaped by drift (DR), dispersal limitation (DL) and homogeneous selection (HoS), while sediment communities were predominantly governed by DL and DR. Abundant biosphere was predominantly influenced by stochastic processes, while rare biosphere showed greater sensitivity to both deterministic and stochastic processes. These results highlight the distinct contributions of abundant and rare biospheres to community dynamics and stability, emphasising the importance of environmental context in shaping microbial interactions.\u0000 </div>","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 6","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144339134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microbial Communities Drive Methane Fluxes From Floodplain Lakes—A Hydrological Gradient Perspective 微生物群落驱动河漫滩湖泊的甲烷通量——水文梯度视角

IF 4 2区生物学

Environmental microbiology Pub Date : 2025-06-22 DOI: 10.1111/1462-2920.70127

Sylwia Lew, Paweł Burandt, Katarzyna Glińska-Lewczuk

{"title":"Microbial Communities Drive Methane Fluxes From Floodplain Lakes—A Hydrological Gradient Perspective","authors":"Sylwia Lew, Paweł Burandt, Katarzyna Glińska-Lewczuk","doi":"10.1111/1462-2920.70127","DOIUrl":"10.1111/1462-2920.70127","url":null,"abstract":"This study examined the impact of methanotrophic bacteria and methanogenic archaea on CH4 fluxes from floodplain lakes at various successional stages, analysing their interactions with physicochemical properties of water. Seasonal microbiological and hydrochemical studies of 10 floodplain lakes in the Łyna River floodplain, characterised by varying hydrological connectivity, revealed that methanotrophic bacteria (MOB) and mGen significantly influenced CH4 and CO2 emissions. The microbial structure, expressed as the MOB/mGen ratio, was associated with a gradient of CH4 flux rates specific to each oxbow type. Average CH4 fluxes from the lakes were 21, 225 and 507 mg m−2 day−1 for lotic, semi-lotic and lentic systems, respectively, while corresponding CO2 fluxes were 0.8, 0.7 and 1.0 g CO2 m−2 day−1, respectively. Statistically significant differences in CH4 and CO2 fluxes were observed between lentic and lotic water bodies. The partial least squares model indicated that water temperature significantly stimulated MOB and mGen abundances. Moreover, chlorophyll-a, turbidity and chemical oxygen demand positively correlated with the presence of these microbial groups. Methanotrophs were negatively affected by NH4–N, while methanogens were affected by NO3–N. These findings highlight the complex biotic and abiotic interactions driving greenhouse gas emissions in floodplain ecosystems and suggest targeted management strategies to mitigate their climate impacts.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 6","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70127","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144339269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tolerance to Herbicides and Resistance to Antibacterial Drugs of Bacterial Isolates From the Guarani Aquifer System (Brazil) 巴西瓜拉尼含水层细菌对除草剂的耐受性和抗菌药物的耐药性

IF 4 2区生物学

Environmental microbiology Pub Date : 2025-06-19 DOI: 10.1111/1462-2920.70115

Carolina S. O. Silva, Sílvia D. Oliveira, Audrey M. Proenca, Eduarda V. Abati, Letícia Marconatto, Cássio S. Moura, Renata Medina-Silva

{"title":"Tolerance to Herbicides and Resistance to Antibacterial Drugs of Bacterial Isolates From the Guarani Aquifer System (Brazil)","authors":"Carolina S. O. Silva, Sílvia D. Oliveira, Audrey M. Proenca, Eduarda V. Abati, Letícia Marconatto, Cássio S. Moura, Renata Medina-Silva","doi":"10.1111/1462-2920.70115","DOIUrl":"10.1111/1462-2920.70115","url":null,"abstract":"The contamination of water bodies by pesticides and antibiotics is a concerning environmental problem on a global scale. We investigated the impact of commonly used herbicides and antibiotics on bacterial isolates from the Guarani Aquifer System (GAS), the second largest aquifer in the world, in agriculture-intensive regions in southern Brazil. A total of 23 isolates were exposed to 2,4-D and glyphosate-based herbicides. Among these, 19 were tolerant (some presenting increased survival) to at least one herbicide. The collection site had a significant effect on isolates' maximum survival (MS), and a strong cross-tolerance between the two chemicals was detected, whereas seven out of 13 isolates (genera Bacillus, Lysinibacillus, Pseudomonas or Enterococcus) were resistant to at least one antibiotic. Isolates with the highest index of antibiotic resistance showed high MS values to herbicides, suggesting cross-resistance. We present the first characterisation of herbicide and antibiotic susceptibility of bacteria isolated from a deep aquifer. Herbicide tolerance was high and common, showing correlation with antibiotic resistance. The results suggest herbicides may impact microbial communities in aquifers, particularly concerning GAS—which spans four countries in South America—highlighting the importance of studying environmental microbes as potential remediators of contaminants, in line with the One Health principle.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 6","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70115","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144323579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Fire Intensity on Soil Microbial Ecology in a Grassland Ecosystem 火灾强度对草地生态系统土壤微生物生态的影响

IF 4 2区生物学

Environmental microbiology Pub Date : 2025-06-19 DOI: 10.1111/1462-2920.70124

Pedro Humberto Lebre, Jacques Fouche, Jason Bosch, Luis R. Pertierra, Gilda Varliero, Arnold Frisby, Nigel Barker, Michelle Greve, Shepherd Tichapondwa, Don Cowan

{"title":"Effects of Fire Intensity on Soil Microbial Ecology in a Grassland Ecosystem","authors":"Pedro Humberto Lebre, Jacques Fouche, Jason Bosch, Luis R. Pertierra, Gilda Varliero, Arnold Frisby, Nigel Barker, Michelle Greve, Shepherd Tichapondwa, Don Cowan","doi":"10.1111/1462-2920.70124","DOIUrl":"10.1111/1462-2920.70124","url":null,"abstract":"In temperate grasslands, periodic or seasonal burning is considered critical for maintaining plant diversity and ecosystems. Under global change scenarios such as warmer and wetter climates and increasing alien invasions, fire is predicted to increase in intensity in many ecosystems. While the effects of fire on many terrestrial habitats (e.g., grassland, forest) have been extensively studied, less attention has been paid to the effects of fire intensity on the underlying soil microbiome. In this study, we used metagenomics, via 16S rRNA amplicon sequencing, coupled with functional assays and thermal profiling, to investigate the effects of increased fire intensity on the short- and medium-term composition and functionality of grassland soil microbiomes. The results indicated that an increase in fire calorific output had a short-term negative effect on soil microbial activity in grassland plots supplemented with plant biomass to simulate increases in fire intensity. In turn, the taxonomic profiling of soil microbial communities revealed that these plots were enriched in fast-growing bacterial taxa 4 weeks after the fire event when compared to plots without biomass supplementation. This suggests that increased fire intensity exerts a medium-term effect on the recovery of grassland soil microbiomes.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 6","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70124","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144323580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

How Useful Are Plant Traits in Explaining Variation in Phyllosphere Microbial Abundance and Composition Across Hosts? 植物性状在解释根层圈微生物丰度和组成在寄主间的变化中有多有用？

IF 4 2区生物学

Environmental microbiology Pub Date : 2025-06-17 DOI: 10.1111/1462-2920.70123

Geneviève Lajoie, Laurine Dariel

{"title":"How Useful Are Plant Traits in Explaining Variation in Phyllosphere Microbial Abundance and Composition Across Hosts?","authors":"Geneviève Lajoie, Laurine Dariel","doi":"10.1111/1462-2920.70123","DOIUrl":"10.1111/1462-2920.70123","url":null,"abstract":"Plant taxonomy has emerged as a key driver of plant–microbe associations, but the mechanisms underlying these associations remain poorly understood. By defining selective environmental gradients for microbial taxa, plant traits can provide more proximate explanations of microbial taxonomic turnover across plants than plant taxonomy alone. Whether key plant traits may generally predict plant–microbe associations, however, remains unknown. Here, we conducted a systematic review of the phyllosphere literature to evaluate whether specific plant traits consistently explained variation in the abundance and composition of leaf microbes within and among plant species. Drawing on results from over 100 studies, we showed that plant traits linked to development, primary metabolism and defence consistently shaped the composition of leaf bacterial and fungal communities, highlighting the relevance of these traits in predicting plant–microbe associations in the phyllosphere. Since most plant traits tested did not influence leaf microbial composition more frequently than expected by chance, our study underscores the importance of: (1) rethinking the scale and selection of plant traits used to investigate microbiome assembly; (2) refining the taxonomic resolution at which microbial communities are analysed and (3) considering alternative explanations such as stochastic processes or historical factors for improving our understanding of plant–microbe associations.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 6","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70123","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Paramoeba atlantica as a Natural Intracellular Niche for Vibrios in Marine Ecosystems 大西洋Paramoeba在海洋生态系统中作为弧菌的天然细胞内生态位

IF 4 2区生物学

Environmental microbiology Pub Date : 2025-06-17 DOI: 10.1111/1462-2920.70122

Laura Onillon, Anaïs Dufau, Vincent Delafont, Hajar Amraoui, Etienne Robino, Angélique Perret, Océane Romatif, Juliette Pouzadoux, Thierry Soldati, Marie-Agnès Travers, Guillaume M. Charrière

{"title":"Paramoeba atlantica as a Natural Intracellular Niche for Vibrios in Marine Ecosystems","authors":"Laura Onillon, Anaïs Dufau, Vincent Delafont, Hajar Amraoui, Etienne Robino, Angélique Perret, Océane Romatif, Juliette Pouzadoux, Thierry Soldati, Marie-Agnès Travers, Guillaume M. Charrière","doi":"10.1111/1462-2920.70122","DOIUrl":"10.1111/1462-2920.70122","url":null,"abstract":"Vibrios are a group of aquatic bacteria that include diverse pathogens for humans and marine animals. In their natural environment, these bacteria are subject to predation by heterotrophic protozoa, including free-living amoebae. Previous studies suggested that some amoebae species can promote the environmental persistence and dissemination of pathogenic vibrios. However, most research has focused on model amoebae derived from freshwater habitats despite the prevalence and diversity of amoebae and vibrios in marine ecosystems. This study identifies a natural association between the marine amoeba Paramoeba atlantica and Vibrio bathopelagicus, a member of the Splendidus clade. Investigations at the cellular level revealed that V. bathopelagicus can resist digestion by P. atlantica and can swim and replicate in large digestive vacuoles for hours before being released by exocytosis. Furthermore, V. bathopelagicus exhibits virulence potential against oysters. Intravacuolar survival in P. atlantica was observed for various vibrios, and screening of clonally isolated free-living marine amoebae revealed that many Paramoebidae are found associated with vibrios. Our findings show that Paramoebidae can act as a widespread intracellular reservoir for diverse vibrios. This provides new insights into the environmental intracellular niches and opportunistic strategies of vibrios in marine ecosystems.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 6","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70122","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0