Environmental microbiology最新文献_第8页

The Photoheterotroph Dokdonia sp. MED134 Modulates the Expression of Resource Acquisition and Anaplerotic Carbon Fixation Pathways in Response to Temperature 光异养植物dodonia sp. MED134对温度的响应调控资源获取和异交固碳途径的表达

IF 4.3 2区生物学

Environmental microbiology Pub Date : 2025-03-05 DOI: 10.1111/1462-2920.70071

José M. González, Semidán Robaina-Estévez, Ana María Cabello, Antonio S. Palacio, Ruairí Gallagher, Ángel López-Urrutia, Laura Alonso-Sáez

{"title":"The Photoheterotroph Dokdonia sp. MED134 Modulates the Expression of Resource Acquisition and Anaplerotic Carbon Fixation Pathways in Response to Temperature","authors":"José M. González, Semidán Robaina-Estévez, Ana María Cabello, Antonio S. Palacio, Ruairí Gallagher, Ángel López-Urrutia, Laura Alonso-Sáez","doi":"10.1111/1462-2920.70071","DOIUrl":"https://doi.org/10.1111/1462-2920.70071","url":null,"abstract":"<div>\u0000 \u0000 Temperature has an overriding impact on microbial physiology, but the molecular basis of thermal acclimation in many ecologically relevant marine bacterial taxa remains unexplored. We used quantitative transcriptomics to analyse the transcriptional reprogramming of a proteorhodopsin-based photoheterotroph, Dokdonia sp. MED134, during thermal acclimation from 10°C to 34°C. Temperature significantly impacted the expression of most MED134 genes (84%). Marker genes of the general stress response were induced towards cold temperature (10°C). Conversely, highly expressed genes associated with DNA replication and resource acquisition, like TonB-dependent transporters and gliding motility genes, were upregulated towards warm temperatures along this thermal range, when growth rates were fast. The mRNA transcript abundance of most genes related to the TCA cycle was not differentially expressed by temperature. By contrast, the expression of genes associated with anaplerotic carbon fixation was significantly enhanced at the optimum growth temperature (25°C). The expression of the proteorhodopsin was minimum at 10°C, and its regulation by light was impaired at 34°C, suggesting regulatory imbalances in this key phototrophic gene under supra-optimal warm conditions. Our findings highlight potential implications of growth temperature for regulating mechanisms of nutrient and energy acquisition, as well as the intracellular carbon flux in globally abundant marine photoheterotrophs.\u0000 </div>","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554420","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

Resolving Symbiodiniaceae Diversity Across Coral Microhabitats and Reef Niches 通过珊瑚微生境和珊瑚礁生态位分析共生科的多样性

IF 4.3 2区生物学

Environmental microbiology Pub Date : 2025-03-04 DOI: 10.1111/1462-2920.70065

Wyatt C. Million, Christian R. Voolstra, Gabriela Perna, Giulia Puntin, Katherine Rowe, Maren Ziegler

{"title":"Resolving Symbiodiniaceae Diversity Across Coral Microhabitats and Reef Niches","authors":"Wyatt C. Million, Christian R. Voolstra, Gabriela Perna, Giulia Puntin, Katherine Rowe, Maren Ziegler","doi":"10.1111/1462-2920.70065","DOIUrl":"10.1111/1462-2920.70065","url":null,"abstract":"Dinoflagellates of the family Symbiodiniaceae are important symbionts of diverse marine animals and they also occupy different environmental niches on coral reefs. The link between diversity at ecosystem-scale to microhabitats of Symbiodiniaceae within the coral holobiont is largely unknown. Using ITS2-amplicon sequencing, we compared Symbiodiniaceae communities across four environments (seawater, near-reef vs. distant sediments and turf algae) and two coral microhabitats (tissue, mucus) on a coral reef in the Red Sea. We found that coral and environmental habitats were both dominated by the genera Symbiodinium, Cladocopium and Durusdinium, but environmental habitats additionally harboured Fugacium, Gerakladium and Halluxium. Each environmental habitat harboured a distinct Symbiodiniaceae community. Nonetheless, 17 ITS2 sequences were shared among coral and environmental habitats and were also part of nearly half of the ITS2 type profiles in coral-based communities. Tissues and mucus of 49 coral colonies from 17 genera had largely identical Symbiodiniaceae communities. Together with the large difference between environmental Symbiodiniaceae communities and those in the coral tissue and mucus, our results indicate a clear barrier between host-associated and environmental Symbiodiniaceae communities marked by only few shared complete type profiles. Monitoring coral colonies after mucus sampling confirmed its suitability for long-term monitoring of coral-associated Symbiodiniaceae communities.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143545921","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

Coexistence Theory for Microbial Ecology, and Vice Versa 微生物生态学的共存理论，反之亦然

IF 4.3 2区生物学

Environmental microbiology Pub Date : 2025-03-03 DOI: 10.1111/1462-2920.70072

James A. Orr, David W. Armitage, Andrew D. Letten

{"title":"Coexistence Theory for Microbial Ecology, and Vice Versa","authors":"James A. Orr, David W. Armitage, Andrew D. Letten","doi":"10.1111/1462-2920.70072","DOIUrl":"https://doi.org/10.1111/1462-2920.70072","url":null,"abstract":"Classical models from theoretical ecology are seeing increasing uptake in microbial ecology, but there remains rich potential for closer cross-pollination. Here we explore opportunities for stronger integration of ecological theory into microbial research (and vice versa) through the lens of so-called “modern” coexistence theory. Coexistence theory can be used to disentangle the contributions different mechanisms (e.g., resource partitioning, environmental variability) make to species coexistence. We begin with a short primer on the fundamental concepts of coexistence theory, with an emphasis on the relevance to microbial communities. We next present a systematic review, which highlights the paucity of empirical applications of coexistence theory in microbial systems. In light of this gap, we then identify and discuss ways in which: (i) coexistence theory can help to answer fundamental and applied questions in microbial ecology, particularly in spatio-temporally heterogeneous environments, and (ii) experimental microbial systems can be leveraged to validate and advance coexistence theory. Finally, we address several unique but often surmountable empirical challenges posed by microbial systems, as well as some conceptual limitations. Nevertheless, thoughtful integration of coexistence theory into microbial ecology presents a wealth of opportunities for the advancement of both theoretical and microbial ecology.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70072","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535739","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

Genetic Diversity and Anatoxin Profiles of Freshwater Benthic Cyanobacteria From Nova Scotia (Canada) 加拿大新斯科舍省淡水底栖蓝藻的遗传多样性及Anatoxin谱

IF 4.3 2区生物学

Environmental microbiology Pub Date : 2025-02-27 DOI: 10.1111/1462-2920.70067

Cecilio Valadez-Cano, Nicolas Tromas, Adrian Reyes-Prieto, Lindsay Johnston, Yannan Huang, Hannah Morris, Lydia Zamlynny, Daniel G. Beach, Rob C. Jamieson, Janice Lawrence

{"title":"Genetic Diversity and Anatoxin Profiles of Freshwater Benthic Cyanobacteria From Nova Scotia (Canada)","authors":"Cecilio Valadez-Cano, Nicolas Tromas, Adrian Reyes-Prieto, Lindsay Johnston, Yannan Huang, Hannah Morris, Lydia Zamlynny, Daniel G. Beach, Rob C. Jamieson, Janice Lawrence","doi":"10.1111/1462-2920.70067","DOIUrl":"https://doi.org/10.1111/1462-2920.70067","url":null,"abstract":"Some mat-forming cyanobacteria produce harmful cyanotoxins, yet benthic species remain understudied compared to planktonic counterparts. This study assesses the diversity, distribution and toxin production of mat-forming cyanobacteria across lentic and lotic systems in Nova Scotia, Canada. We documented greater cyanobacterial species richness in lentic environments, with six dominant species distributed into two major Microcoleus clades, five of which represent putative novel taxa. Two Microcoleus species with the genetic repertoire to produce anatoxins were prevalent. One has been previously reported in Canada, while the second represents a novel species found exclusively in an environment impacted by discharge from a water treatment plant. We observed variability in the gene clusters responsible for the biosynthesis of anatoxin-a and associated analogues (ATXs), including the discovery of a novel anaG variant with a ~ 1.7 kb insertion in a Microcoleus strain dominating homoanatoxin-producing mats. This extended anaG, encoding a polyketide synthase with an additional methyltransferase domain, coexists with shorter variants, leading to the production of a mixture of ATXs. These findings highlight the genetic diversity of benthic cyanobacteria in freshwater environments, with Microcoleus as the primary contributor to the production of ATXs in both lentic and lotic systems, underscoring their potential to produce harmful toxins.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70067","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513554","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

Discovering Hidden Archaeal and Bacterial Lipid Producers in a Euxinic Marine System 在富氧海洋系统中发现隐藏的古细菌和细菌脂质生产者

IF 4.3 2区生物学

Environmental microbiology Pub Date : 2025-02-27 DOI: 10.1111/1462-2920.70054

Dina Castillo Boukhchtaber, F. A. Bastiaan von Meijenfeldt, Diana X. Sahonero Canavesi, Denise Dorhout, Nicole J. Bale, Ellen C. Hopmans, Laura Villanueva

{"title":"Discovering Hidden Archaeal and Bacterial Lipid Producers in a Euxinic Marine System","authors":"Dina Castillo Boukhchtaber, F. A. Bastiaan von Meijenfeldt, Diana X. Sahonero Canavesi, Denise Dorhout, Nicole J. Bale, Ellen C. Hopmans, Laura Villanueva","doi":"10.1111/1462-2920.70054","DOIUrl":"https://doi.org/10.1111/1462-2920.70054","url":null,"abstract":"Bacterial membrane lipids are typically characterised by fatty acid bilayers linked through ester bonds, whereas those of Archaea are characterised by ether-linked isoprenoids forming bilayers or monolayers of membrane-spanning lipids known as isoprenoidal glycerol dialkyl glycerol tetraethers (isoGDGTs). However, this understanding has been reconsidered with the identification of branched GDGTs (brGDGTs), which are membrane-spanning ether-bound branched alkyl fatty acids of bacterial origin, though their producers are often unidentified. The limited availability of microbial cultures constrains the understanding of the biological sources of these membrane lipids, thus limiting their use as biomarkers. To address this issue, we identified membrane lipids in the Black Sea using high-resolution accurate mass/mass spectrometry and inferred their potential producers by targeting lipid biosynthetic pathways encoded on the metagenome, in metagenome-assembled genomes and unbinned scaffolds. We also identified brGDGTs and highly branched GDGTs in the suboxic and euxinic waters, potentially attributed to Planctomycetota, Cloacimonadota, Desulfobacterota, Chloroflexota, Actinobacteria and Myxococcota—based on their lipid biosynthetic genomic potential. These findings introduce new possibilities for using specific brGDGTs as biomarkers of anoxic conditions in marine environments and highlight the role of these membrane lipids in microbial adaptation.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513552","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

Seasonal Cycles in a Seaweed Holobiont: A Multiyear Time Series Reveals Repetitive Microbial Shifts and Core Taxa 海藻全息生物的季节周期：多年时间序列揭示了重复的微生物变化和核心分类群

IF 4.3 2区生物学

Environmental microbiology Pub Date : 2025-02-27 DOI: 10.1111/1462-2920.70062

Chantal Marie Mudlaff, Florian Weinberger, Luisa Düsedau, Marjan Ghotbi, Sven Künzel, Guido Bonthond

{"title":"Seasonal Cycles in a Seaweed Holobiont: A Multiyear Time Series Reveals Repetitive Microbial Shifts and Core Taxa","authors":"Chantal Marie Mudlaff, Florian Weinberger, Luisa Düsedau, Marjan Ghotbi, Sven Künzel, Guido Bonthond","doi":"10.1111/1462-2920.70062","DOIUrl":"https://doi.org/10.1111/1462-2920.70062","url":null,"abstract":"Seasonality is an important natural feature that drives cyclic environmental changes. Seaweed holobionts, inhabiting shallow waters such as rocky shores and mud flats, are subject to seasonal changes in particular, but little is known about the influence of seasonality on their microbial communities. In this study, we conducted a three-year time series, sampling at two-month intervals, to assess the seasonality of microbial epibiota in the seaweed holobiont Gracilaria vermiculophylla. Our results reveal pronounced seasonal shifts that are both taxonomic and functional, oscillating between late winter and early summer across consecutive years. While epibiota varied taxonomically between populations, they were functionally similar, indicating that seasonal variability drives functional changes, while spatial variability is more redundant. We also identified seasonal core microbiota that consistently (re)associated with the host at specific times, alongside a permanent core that is present year-round, independent of season or geography. These findings highlight the dynamic yet resilient nature of seaweed holobionts and demonstrate that their epibiota undergo predictable changes. Therewith, this research offers important insights into the temporal dynamics of seaweed-associated microbiota and demonstrates that the relationship between seaweed host and its epibiota is not static but naturally subject to an ongoing seasonal succession process.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513553","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

Pseudomonas Species Isolated From Lotus Nodules Are Genetically Diverse and Promote Plant Growth 从莲节中分离的假单胞菌具有遗传多样性并促进植物生长

IF 4.3 2区生物学

Environmental microbiology Pub Date : 2025-02-27 DOI: 10.1111/1462-2920.70066

Yu-Hsiang Yu, Julian Kurtenbach, Duncan Crosbie, Andreas Brachmann, Macarena Marín Arancibia

{"title":"Pseudomonas Species Isolated From Lotus Nodules Are Genetically Diverse and Promote Plant Growth","authors":"Yu-Hsiang Yu, Julian Kurtenbach, Duncan Crosbie, Andreas Brachmann, Macarena Marín Arancibia","doi":"10.1111/1462-2920.70066","DOIUrl":"https://doi.org/10.1111/1462-2920.70066","url":null,"abstract":"Nodules harbour microbial communities composed of rhizobia and other lower-abundance bacteria. These non-rhizobial bacteria can promote plant growth. However, their genomic diversity and how this relates to their plant growth-promoting traits remain poorly investigated. Here, we isolated 14 Pseudomonas strains from the nodules of Lotus plants, sequenced their genomes, analysed their genomic and phylogenetic diversity, and assessed their ability to promote plant growth. We identified five distinct species, including a novel species named Pseudomonas monachiensis sp. nov., with strain PLb12AT, as the type strain. Genome analysis of these nodule-isolated Pseudomonas revealed an abundance of genes associated to plant growth-promoting traits, especially auxin-related genes, compared to closely related type strains. In accordance, most nodule-isolated Pseudomonas strains enhanced shoot growth of Lotus burttii, while only some promoted root growth or early onset of root hair proliferation. However, none of the strains significantly affected the ability to form nodules. Overall, our findings highlight the genotypic diversity and the plant growth-promoting potential of nodule-isolated Pseudomonas and underscore their possible applications in mixed inocula with rhizobia.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70066","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513727","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

The Bacterial Antimonite Oxidase AnoA: Unexpected Diversity and Environmental Widespread Occurrence 细菌锑氧化酶AnoA：意想不到的多样性和环境广泛存在

IF 4.3 2区生物学

Environmental microbiology Pub Date : 2025-02-26 DOI: 10.1111/1462-2920.70069

Claire Da Costa, Thierry Berthe, Titouan Dehaies, Sophie Ayrault, Yannick Colin

{"title":"The Bacterial Antimonite Oxidase AnoA: Unexpected Diversity and Environmental Widespread Occurrence","authors":"Claire Da Costa, Thierry Berthe, Titouan Dehaies, Sophie Ayrault, Yannick Colin","doi":"10.1111/1462-2920.70069","DOIUrl":"https://doi.org/10.1111/1462-2920.70069","url":null,"abstract":"<div>\u0000 \u0000 The growing contamination of urban areas by antimony (Sb) has sparked interest in microbial processes that modulate Sb speciation in ecosystems. The bacterial antimonite oxidase AnoA is the only oxidase known so far whose gene expression is specifically induced by Sb(III), but its annotation in public databases is currently lacking. Here, the computational search for AnoA orthologs predicted an unexpected phylogenetic distribution across the Pseudomonadota and Actinomycetota. Putative orthologs were identified in both known Sb(III)-oxidisers (e.g., Shinella, Hydrogenophaga, Bosea, Cupriavidus and Pseudomonas) and taxa not previously linked to the Sb cycle (e.g., Bradyrhizobium, Mesorhizobium, Methylobacterium and Paraburkholderia). The anoA gene is single-copy in most Proteobacterial genomes, but is often detected in multiple copies in the Actinomycetota. Furthermore, sequence evolutionary distances suggest that it is mainly inherited vertically, with horizontal transfer events, in particular towards the Gammaproteobacteria. Using the constructed database, new PCR primers were designed and outperformed existing strain-specific primers in amplifying the anoA gene from samples with varying Sb levels and microbial profiles. Sequencing and quantification of PCR amplicons revealed a diverse range of sequences in sediments and natural biofilms, indicating that the oxidase is more environmentally diverse and widespread than previously thought and may play a significant role in Sb(III) detoxification.\u0000 </div>","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489993","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

Co-Existence Slows Diversification in Experimental Populations of E. coli and P. fluorescens 共存减缓了大肠杆菌和荧光杆菌实验群体的多样化

IF 4.3 2区生物学

Environmental microbiology Pub Date : 2025-02-23 DOI: 10.1111/1462-2920.70061

Gareth Howells, Aysha L. Sezmis, Christopher Blake, Michael J. McDonald

{"title":"Co-Existence Slows Diversification in Experimental Populations of E. coli and P. fluorescens","authors":"Gareth Howells, Aysha L. Sezmis, Christopher Blake, Michael J. McDonald","doi":"10.1111/1462-2920.70061","DOIUrl":"https://doi.org/10.1111/1462-2920.70061","url":null,"abstract":"Microbes grown in heterogeneous laboratory environments can rapidly diversify into multiple, coexisting variants. While the genetic and evolutionary mechanisms of laboratory adaptive radiations are well studied, how the presence of other species alters the outcomes of diversification is less well understood. To test the effect of co-culture growth on the Pseudomonas fluorescens SBW25 adaptive radiation, Escherichia coli and P. fluorescens were cultured in monoculture and co-culture for 8 weeks. In P. fluorescens monoculture, Wrinkly and Smooth Spreader types rapidly evolved and were maintained over 8 weeks, while E. coli monocultures evolved two colony types, a big and a small colony variant. In contrast, we found that in co-culture, E. coli did not evolve small colony variants. Whole genome sequencing revealed the genetic basis of possible co-culture specific adaptations in both E. coli and P. fluorescens. Altogether, our data support that the presence of multiple species changed the outcome of adaptive radiation.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 2","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70061","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475568","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

The Bacterial Genus Ramlibacter: Betaproteobacteria Capable of Surviving in Oligotrophic Environments Thanks to Several Shared Genetic Adaptation Traits 细菌属Ramlibacter：由于几个共同的遗传适应特征，能够在贫营养环境中生存的Betaproteobacteria

IF 4.3 2区生物学

Environmental microbiology Pub Date : 2025-02-23 DOI: 10.1111/1462-2920.70059

Gilles De Luca, Mohamed Barakat, André Verméglio, Wafa Achouak, Thierry Heulin

{"title":"The Bacterial Genus Ramlibacter: Betaproteobacteria Capable of Surviving in Oligotrophic Environments Thanks to Several Shared Genetic Adaptation Traits","authors":"Gilles De Luca, Mohamed Barakat, André Verméglio, Wafa Achouak, Thierry Heulin","doi":"10.1111/1462-2920.70059","DOIUrl":"https://doi.org/10.1111/1462-2920.70059","url":null,"abstract":"Ramlibacter tataouinensis, the type species of the genus Ramlibacter, is renowned for its ability to thrive in hot, arid and nutrient-poor desert soils. To investigate whether its adaptive properties are shared across all 20 currently described Ramlibacter species found in diverse terrestrial and aquatic habitats worldwide, we conducted a comprehensive analysis of 16S rRNA sequences and genomic information available from the literature. Our study encompassed approximately 40 deposited genomes, allowing us to propose a genomic phylogeny that aligns with the 16S rRNA phylogeny. Our findings reveal several conserved features across the genus Ramlibacter. This includes the presence of light sensors, environmental sensing networks, organic carbon and phosphate acquisition systems and the ability to store carbon and energy in the form of polyhydroxyalkanoate or polyphosphate granules. These shared traits rationalise the widespread distribution of Ramlibacter in oligotrophic terrestrial and aquatic environments. They also explain the genus' ability to withstand desiccation, endure extended periods of starvation, and survive in nutrient-depleted conditions. Notably, certain adaptive features are further enhanced in several species by their pleiomorphism and ability to form cysts. Overall, our study not only highlights the ecological adaptations of Ramlibacter species but also extends our understanding of microbial ecology in oligotrophic environments.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":"27 2","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.70059","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475567","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