Environmental Microbiology Reports最新文献

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Ploidy levels in diverse picocyanobacteria from the Baltic Sea 波罗的海各种皮蓝藻的倍性水平
IF 3.6 4区 生物学
Environmental Microbiology Reports Pub Date : 2024-09-17 DOI: 10.1111/1758-2229.70005
Julia Weissenbach, Anabella Aguilera, Laura Bas Conn, Jarone Pinhassi, Catherine Legrand, Hanna Farnelid
{"title":"Ploidy levels in diverse picocyanobacteria from the Baltic Sea","authors":"Julia Weissenbach,&nbsp;Anabella Aguilera,&nbsp;Laura Bas Conn,&nbsp;Jarone Pinhassi,&nbsp;Catherine Legrand,&nbsp;Hanna Farnelid","doi":"10.1111/1758-2229.70005","DOIUrl":"https://doi.org/10.1111/1758-2229.70005","url":null,"abstract":"<p>In nature, the number of genome or chromosome copies within cells (ploidy) can vary between species and environmental conditions, potentially influencing how organisms adapt to changing environments. Although ploidy levels cannot be easily determined by standard genome sequencing, understanding ploidy is crucial for the quantitative interpretation of molecular data. Cyanobacteria are known to contain haploid, oligoploid, and polyploid species. The smallest cyanobacteria, picocyanobacteria (less than 2 μm in diameter), have a widespread distribution ranging from marine to freshwater environments, contributing significantly to global primary production. In this study, we determined the ploidy level of genetically and physiologically diverse brackish picocyanobacteria isolated from the Baltic Sea using a qPCR assay targeting the rbcL gene. The strains contained one to four genome copies per cell. The ploidy level was not linked with phylogeny based on the identity of the 16S rRNA gene. The variation of ploidy among the brackish strains was lower compared to what has been reported for freshwater strains and was more similar to what has been reported for marine strains. The potential ecological advantage of polyploidy among picocyanobacteria has yet to be described. Our study highlights the importance of considering ploidy to interpret the abundance and adaptation of brackish picocyanobacteria.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142244955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Climate change and antibiotic resistance: A scoping review 气候变化与抗生素耐药性:范围审查
IF 3.6 4区 生物学
Environmental Microbiology Reports Pub Date : 2024-09-12 DOI: 10.1111/1758-2229.70008
María Fernández Salgueiro, José Antonio Cernuda Martínez, Rick Kye Gan, Pedro Arcos González
{"title":"Climate change and antibiotic resistance: A scoping review","authors":"María Fernández Salgueiro,&nbsp;José Antonio Cernuda Martínez,&nbsp;Rick Kye Gan,&nbsp;Pedro Arcos González","doi":"10.1111/1758-2229.70008","DOIUrl":"https://doi.org/10.1111/1758-2229.70008","url":null,"abstract":"<p>This scoping review aimed to investigate the potential association between climate change and the rise of antibiotic resistance while also exploring the elements of climate change that may be involved. A scoping review was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews, comprehensively searching scientific literature up to 31 January 2024. Multiple databases were utilized, including MEDLINE, Web of Science and SCOPUS. Various search strategies were employed, and selection criteria were established to include articles relevant to antibiotic resistance and climate change. The review included 30 selected articles published predominantly after 2019. Findings from these studies collectively suggest that rising temperatures associated with climate change can contribute to the proliferation of antibiotic resistance, affecting diverse ecosystems. This phenomenon is observed in soil, glaciers, rivers and clinical settings. Rising temperatures are associated with a rise in the prevalence of antibiotic resistance across various environments, raising concerns for global health. However, these studies provide valuable insights but do not establish a definitive causal link between environmental temperature and antibiotic resistance. The selective pressure exerted by antibiotics and their residues in ecosystems further complicates the issue.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142231073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Unique episymbiotic relationship between Candidatus Patescibacteria and Zoogloea in activated sludge flocs at a municipal wastewater treatment plant 城市污水处理厂的活性污泥絮凝物中棒状杆菌与 Zoogloea 之间独特的共生关系
IF 3.6 4区 生物学
Environmental Microbiology Reports Pub Date : 2024-09-12 DOI: 10.1111/1758-2229.70007
Naoki Fujii, Kyohei Kuroda, Takashi Narihiro, Yoshiteru Aoi, Noriatsu Ozaki, Akiyoshi Ohashi, Tomonori Kindaichi
{"title":"Unique episymbiotic relationship between Candidatus Patescibacteria and Zoogloea in activated sludge flocs at a municipal wastewater treatment plant","authors":"Naoki Fujii,&nbsp;Kyohei Kuroda,&nbsp;Takashi Narihiro,&nbsp;Yoshiteru Aoi,&nbsp;Noriatsu Ozaki,&nbsp;Akiyoshi Ohashi,&nbsp;Tomonori Kindaichi","doi":"10.1111/1758-2229.70007","DOIUrl":"https://doi.org/10.1111/1758-2229.70007","url":null,"abstract":"<p><i>Candidatus</i> Patescibacteria, also known as candidate phyla radiation (CPR), including the class-level uncultured clade JAEDAM01 (formerly a subclass of Gracilibacteria/GN02/BD1-5), are ubiquitous in activated sludge. However, their characteristics and relationships with other organisms are largely unknown. They are believed to be episymbiotic, endosymbiotic or predatory. Despite our understanding of their limited metabolic capacity, their precise roles remain elusive due to the difficulty in cultivating and identifying them. In previous research, we successfully recovered high-quality metagenome-assembled genomes (MAGs), including a member of JAEDAM01 from activated sludge flocs. In this study, we designed new probes to visualize the targeted JAEDAM01-associated MAG HHAS10 and identified its host using fluorescence in situ hybridization (FISH). The FISH observations revealed that JAEDAM01 HHAS10-like cells were located within dense clusters of <i>Zoogloea</i>, and the fluorescence brightness of zoogloeal cells decreased in the vicinity of the CPR cells. The <i>Zoogloea</i> MAGs possessed genes related to extracellular polymeric substance biosynthesis, floc formation and nutrient removal, including a polyhydroxyalkanoate (PHA) accumulation pathway. The JAEDAM01 MAG HHAS10 possessed genes associated with type IV pili, competence protein EC and PHA degradation, suggesting a <i>Zoogloea</i>-dependent lifestyle in activated sludge flocs. These findings indicate a new symbiotic relationship between JAEDAM01 and <i>Zoogloea</i>.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142231072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Genome-resolved metagenomics revealed novel microbial taxa with ancient metabolism from macroscopic microbial mat structures inhabiting anoxic deep reefs of a Maldivian Blue Hole 基因组分辨元基因组学从马尔代夫蓝洞缺氧深礁中栖息的宏观微生物垫结构中发现了具有古老新陈代谢的新型微生物类群
IF 3.6 4区 生物学
Environmental Microbiology Reports Pub Date : 2024-09-12 DOI: 10.1111/1758-2229.13315
Lapo Doni, Annalisa Azzola, Caterina Oliveri, Emanuele Bosi, Manon Auguste, Carla Morri, Carlo Nike Bianchi, Monica Montefalcone, Luigi Vezzulli
{"title":"Genome-resolved metagenomics revealed novel microbial taxa with ancient metabolism from macroscopic microbial mat structures inhabiting anoxic deep reefs of a Maldivian Blue Hole","authors":"Lapo Doni,&nbsp;Annalisa Azzola,&nbsp;Caterina Oliveri,&nbsp;Emanuele Bosi,&nbsp;Manon Auguste,&nbsp;Carla Morri,&nbsp;Carlo Nike Bianchi,&nbsp;Monica Montefalcone,&nbsp;Luigi Vezzulli","doi":"10.1111/1758-2229.13315","DOIUrl":"https://doi.org/10.1111/1758-2229.13315","url":null,"abstract":"<p>Blue holes are vertical water-filled openings in carbonate rock that exhibit complex morphology, ecology, and water chemistry. In this study, macroscopic microbial mat structures found in complete anoxic conditions in the Faanu Mudugau Blue Hole (Maldives) were studied by metagenomic methods. Such communities have likely been evolutionary isolated from the surrounding marine environment for more than 10,000 years since the Blue Hole formation during the last Ice Age. A total of 48 high-quality metagenome-assembled genomes (MAGs) were recovered, predominantly composed of the phyla <i>Chloroflexota</i>, <i>Proteobacteria</i> and <i>Desulfobacterota</i>. None of these MAGs have been classified to species level (&lt;95% <i>ANI</i>), suggesting the discovery of several new microbial taxa. In particular, MAGs belonging to novel bacterial genera within the order <i>Dehalococcoidales</i> accounted for 20% of the macroscopic mat community. Genome-resolved metabolic analysis of this dominant microbial fraction revealed a mixotrophic lifestyle based on energy conservation via fermentation, hydrogen metabolism and anaerobic CO<sub>2</sub> fixation through the Wood–Ljungdahl pathway. Interestingly, these bacteria showed a high proportion of ancestral genes in their genomes providing intriguing perspectives on mechanisms driving microbial evolution in this peculiar environment. Overall, our results provide new knowledge for understanding microbial life under extreme conditions in blue hole environments.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.13315","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142231024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Metabolic versatility of aerobic methane-oxidizing bacteria under anoxia in aquatic ecosystems 水生生态系统缺氧条件下需氧甲烷氧化细菌的代谢多功能性。
IF 3.6 4区 生物学
Environmental Microbiology Reports Pub Date : 2024-09-04 DOI: 10.1111/1758-2229.70002
Biao Li, Zhendu Mao, Jingya Xue, Peng Xing, Qinglong L. Wu
{"title":"Metabolic versatility of aerobic methane-oxidizing bacteria under anoxia in aquatic ecosystems","authors":"Biao Li,&nbsp;Zhendu Mao,&nbsp;Jingya Xue,&nbsp;Peng Xing,&nbsp;Qinglong L. Wu","doi":"10.1111/1758-2229.70002","DOIUrl":"10.1111/1758-2229.70002","url":null,"abstract":"<p>The potential positive feedback between global aquatic deoxygenation and methane (CH<sub>4</sub>) emission emphasizes the importance of understanding CH<sub>4</sub> cycling under O<sub>2</sub>-limited conditions. Increasing observations for aerobic CH<sub>4</sub>-oxidizing bacteria (MOB) under anoxia have updated the prevailing paradigm that MOB are O<sub>2</sub>-dependent; thus, clarification on the metabolic mechanisms of MOB under anoxia is critical and timely. Here, we mapped the global distribution of MOB under anoxic aquatic zones and summarized four underlying metabolic strategies for MOB under anoxia: (a) forming a consortium with oxygenic microorganisms; (b) self-generation/storage of O<sub>2</sub> by MOB; (c) forming a consortium with non-oxygenic heterotrophic bacteria that use other electron acceptors; and (d) utilizing alternative electron acceptors other than O<sub>2</sub>. Finally, we proposed directions for future research. This study calls for improved understanding of MOB under anoxia, and underscores the importance of this overlooked CH<sub>4</sub> sink amidst global aquatic deoxygenation.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142131315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Effect of temperature on in vitro germination and growth of Colletotrichum fioriniae, a new emerging pathogen of olive fruits 温度对新出现的橄榄果病原体 Colletotrichum fioriniae 的体外发芽和生长的影响。
IF 3.6 4区 生物学
Environmental Microbiology Reports Pub Date : 2024-09-04 DOI: 10.1111/1758-2229.13275
Federico Brugneti, Luca Rossini, Mounira Inas Drais, Silvia Turco, Angelo Mazzaglia
{"title":"Effect of temperature on in vitro germination and growth of Colletotrichum fioriniae, a new emerging pathogen of olive fruits","authors":"Federico Brugneti,&nbsp;Luca Rossini,&nbsp;Mounira Inas Drais,&nbsp;Silvia Turco,&nbsp;Angelo Mazzaglia","doi":"10.1111/1758-2229.13275","DOIUrl":"10.1111/1758-2229.13275","url":null,"abstract":"<p>Olive anthracnose induced by different <i>Colletotrichum</i> species causes dramatic losses of fruit yield and oil quality. The increasing incidence of <i>Colletotrichum fioriniae</i> (<i>Colletotrichum acutatum</i> species complex) as causal agent of olive anthracnose in Italy, is endorsing new studies on its biology, ecology, and environmental factors such as temperature. Five isolates from different sampling sites in Lazio region (Central Italy) were studied under controlled laboratory conditions aiming to better understand the differences of thermal development among the isolates and to lay the foundations of a future mathematical model able to describe the key aspects of the pathogen's life cycle. The mycelial growth rate and the conidial germination rate were assessed at seven different constant temperatures (5, 10, 15, 20, 25, 30, and 35°C) and fixed relative humidity (100% RH). The obtained dataset was analysed to estimate the parameters of mathematical functions that connect the mycelial growth rate and the spore germination with the environmental temperature. The parameters set provided as the result of this study constitute a key step forward in the biological knowledge of the species and the basis for future formulations of mathematical models that might be the core of decision support systems in an integrated pest management framework.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.13275","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142124366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Deciphering microbial communities involved in marine steel corrosion using high-throughput amplicon sequencing 利用高通量扩增片段测序技术解密海洋钢腐蚀过程中的微生物群落。
IF 3.6 4区 生物学
Environmental Microbiology Reports Pub Date : 2024-08-27 DOI: 10.1111/1758-2229.70001
Biji Shibulal, Martin Peter Smith, Ian Cooper, Heidi Marie Burgess, Norman Moles, Alison Willows
{"title":"Deciphering microbial communities involved in marine steel corrosion using high-throughput amplicon sequencing","authors":"Biji Shibulal,&nbsp;Martin Peter Smith,&nbsp;Ian Cooper,&nbsp;Heidi Marie Burgess,&nbsp;Norman Moles,&nbsp;Alison Willows","doi":"10.1111/1758-2229.70001","DOIUrl":"10.1111/1758-2229.70001","url":null,"abstract":"<p>To characterize the source and effects of bacterial communities on corrosion of intertidal structures, three different UK coastal sites were sampled for corrosion materials, sediment and seawater. Chemical analyses indicate the activity of sulfate-reducing microbes (SRBs) at 2 sites (Shoreham and Newhaven), but not at the third (Southend-on-Sea). Microbial communities in the deep sediment and corrosion samples are similar. The phylum Proteobacteria is dominant (40.4% of the total ASV), followed by Campilobacterota (11.3%), Desulfobacterota and Firmicutes (4%–5%). At lower taxonomic levels, corrosion causing bacteria, such as <i>Shewanella</i> sp. (6%), <i>Colwellia</i> sp. (7%) and <i>Mariprofundus</i> sp. (1%), are present. At Southend-on-sea, the relative abundance of Campilobacterota is higher compared to the other two sites. The mechanism of action of microorganisms at Shoreham and Newhaven involves biogenic sulfuric acid corrosion of iron by the combined action of SRBs and sulfur-oxidizing microbes. However, at Southend-on-sea, sulfur compounds are not implicated in corrosion, but SRBs and other electroactive microbes may play a role in which cathodic reactions (electrical MIC) and microbial enzymes (chemical MIC) are involved. To contribute to diagnosis of accelerated intertidal corrosion types, we developed a rapid identification method for SRBs using quantitative polymerase chain reaction high-resolution melt curve analysis of the <i>dsr</i>B gene.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142071552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Embracing complexity in plant–microbiome systems 迎接植物微生物组系统的复杂性。
IF 3.6 4区 生物学
Environmental Microbiology Reports Pub Date : 2024-08-27 DOI: 10.1111/1758-2229.70000
María Josefina Poupin, Bernardo González
{"title":"Embracing complexity in plant–microbiome systems","authors":"María Josefina Poupin,&nbsp;Bernardo González","doi":"10.1111/1758-2229.70000","DOIUrl":"10.1111/1758-2229.70000","url":null,"abstract":"<p>Despite recent advances in understanding the role of microorganisms in plant holobiont metabolism, physiology, and fitness, several relevant questions are yet to be answered, with implications for ecology, evolution, and sustainable agriculture. This article explores some of these questions and discusses emerging research areas in plant microbiomes. Firstly, it emphasizes the need to move beyond taxonomic characterization towards understanding microbial functions within plant ecosystems. Secondly, controlling methodological biases and enhancing OMICS technologies' standardization is imperative for a deeper comprehension of plant–microbiota interactions. Furthermore, while plant microbiota research has primarily centred on bacteria and fungi, other microbial players such as archaea, viruses, and microeukaryotes have been largely overlooked. Emerging evidence highlights their presence and potential roles, underscoring the need for thorough assessments. Future research should aim to elucidate the ecological microbial interactions, their impact on plant performance, and how the plant context shapes microbial community dynamics. Finally, a discussion is provided on how the multiple layers of abiotic and biotic factors influencing the spatiotemporal dynamics of plant–microbiome systems require in-depth attention. Examples illustrate how synthetic communities and computational methods such as machine learning and artificial intelligence provide alternatives to tackle these challenges and analyse the plant holobiont as a complex system.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142071553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 bacterial strains for ibuprofen biodegradation: Drug removal, transformation, and potential catabolic genes 布洛芬生物降解新菌株:药物去除、转化和潜在的分解基因。
IF 3.6 4区 生物学
Environmental Microbiology Reports Pub Date : 2024-08-26 DOI: 10.1111/1758-2229.13320
Alba Lara-Moreno, Maria Clara Costa, Ayleen Vargas-Villagomez, Jorge Dias Carlier
{"title":"New bacterial strains for ibuprofen biodegradation: Drug removal, transformation, and potential catabolic genes","authors":"Alba Lara-Moreno,&nbsp;Maria Clara Costa,&nbsp;Ayleen Vargas-Villagomez,&nbsp;Jorge Dias Carlier","doi":"10.1111/1758-2229.13320","DOIUrl":"10.1111/1758-2229.13320","url":null,"abstract":"<p>Ibuprofen (IBU) is a significant contaminant frequently found in wastewater treatment plants due to its widespread use and limited removal during treatment processes. This leads to its discharge into the environment, causing considerable environmental concerns. The use of microorganisms has recently been recognized as a sustainable method for mitigating IBU contamination in wastewater. In this study, new bacteria capable of growing in a solid medium with IBU as the only carbon source and removing IBU from a liquid medium were isolated from environmental samples, including soil, marine, mine, and olive mill wastewater. Four bacterial strains, namely <i>Klebsiella pneumoniae</i> TIBU2.1, <i>Klebsiella variicola</i> LOIBU1.1, <i>Pseudomonas aeruginosa</i> LOIBU1.2, and <i>Mycolicibacterium aubagnense</i> HPB1.1, were identified through 16S rRNA gene sequencing. These strains demonstrated significant IBU removal efficiencies, ranging from 60 to 100% within 14 days, starting from an initial IBU concentration of 5 mg per litre. These bacteria have not been previously reported in the literature as IBU degraders, making this work a valuable contribution to further studies in the field of bioremediation in environments contaminated by IBU. Based on the IBU removal results, the most promising bacteria, <i>K. pneumoniae</i> TIBU2.1 and <i>M. aubagnense</i> HPB1.1, were selected for an in silico analysis to identify genes potentially involved in IBU biodegradation. Interestingly, in the tests with TIBU2.1, a peak of IBU transformation product(s) was detected by high-performance liquid chromatography, while in the tests with HPB1.1, it was not detected. The emerging peak was analysed by liquid chromatography–mass spectrometry, indicating the presence of possible conjugates between intermediates of IBU biodegradation. The proteins encoded on their whole-genome sequences were aligned with proteins involved in an IBU-degrading pathway reported in bacteria with respective catabolic genes. The analysis indicated that strain HPB1.1 possesses genes encoding proteins similar to most enzymes reported associated with the IBU metabolic pathways used as reference bacteria, while strain TIBU2.1 has genes encoding proteins similar to enzymes involved in both the upper and the lower part of that pathway. Notably, in the tests with the strain having more candidate genes encoding IBU-catabolic enzymes, no IBU transformation products were detected, while in the tests with the strain having fewer of these genes, detection occurred.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.13320","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142071554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Surveillance of influenza A and B viruses from community and hospital wastewater treatment plants 监测来自社区和医院污水处理厂的甲型和乙型流感病毒。
IF 3.6 4区 生物学
Environmental Microbiology Reports Pub Date : 2024-08-22 DOI: 10.1111/1758-2229.13317
Sneka Panneerselvam, Athira Manayan Parambil, Anup Jayaram, Prasad Varamballi, Chiranjay Mukhopadhyay, Anitha Jagadesh
{"title":"Surveillance of influenza A and B viruses from community and hospital wastewater treatment plants","authors":"Sneka Panneerselvam,&nbsp;Athira Manayan Parambil,&nbsp;Anup Jayaram,&nbsp;Prasad Varamballi,&nbsp;Chiranjay Mukhopadhyay,&nbsp;Anitha Jagadesh","doi":"10.1111/1758-2229.13317","DOIUrl":"10.1111/1758-2229.13317","url":null,"abstract":"<p>Influenza virus is a well-known pathogen that can cause epidemics and pandemics. Several surveillance methods are being followed to monitor the transmission patterns and spread of influenza in the community. Wastewater-based Epidemiology (WBE) can serve as an additional tool to detect the presence of influenza viruses. The current study primarily focuses on surveillance of Influenza A and Influenza B in wastewater treatment plant (WWTP) samples. A total of 100 wastewater samples were collected in July (<i>n</i> = 50) and August (<i>n</i> = 50) 2023 from four different WWTPs in Manipal and Udupi, district of Karnataka, India. The WWTP samples were processed and tested by Real-Time reverse transcriptase PCR (RT-PCR). The data generated was analysed in comparison with the clinical Influenza cases. Of the 100 samples, 18 (18%) tested positive for Influenza A virus and 2 (2%) tested positive for Influenza B virus, with a viral load ranging 1.4 x 10<sup>2</sup>–2.2 x 10<sup>3</sup> gc/L for influenza A virus and 5.2 x 10<sup>3</sup>–7.7 x 10<sup>3</sup>gc/L for influenza B virus. On correlating the WWTP positivity with clinical case, it was found that influenza clinical cases and virus positivity in wastewater increased simultaneously, emphasizing WBE as a concurrent method for monitoring influenza virus activity.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.13317","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142015797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
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