FEMS microbiology ecology最新文献_第5页

Distinct benthic and planktonic microbial communities within the stratified water column of the perennially ice-covered Lake Joyce, Antarctica. 南极乔伊斯湖常年被冰覆盖的分层水柱内不同的底栖和浮游微生物群落。

IF 4.1 3区生物学

FEMS microbiology ecology Pub Date : 2026-07-17 DOI: 10.1093/femsec/fiag078

Carla Greco, Ian Hawes, Dawn Y Sumner, Tyler J Mackey, Gonzalo Oteo-García, Marian Yallop, Gary Barker, Rachael Morgan-Kiss, Anne D Jungblut

{"title":"Distinct benthic and planktonic microbial communities within the stratified water column of the perennially ice-covered Lake Joyce, Antarctica.","authors":"Carla Greco, Ian Hawes, Dawn Y Sumner, Tyler J Mackey, Gonzalo Oteo-García, Marian Yallop, Gary Barker, Rachael Morgan-Kiss, Anne D Jungblut","doi":"10.1093/femsec/fiag078","DOIUrl":"10.1093/femsec/fiag078","url":null,"abstract":"Perennially ice-covered lakes are hotspots of biodiversity and biomass accumulation in polar deserts. Many Antarctic perennially ice-covered lakes are density stratified, within which an oxygenated upper layer overlies deeper, darker anoxic waters. We carried out the first 16S and 18S rRNA gene high throughput sequencing of microplankton and benthic microbial mats in perennially ice-covered Lake Joyce, McMurdo Dry Valleys, Antarctica. We evaluated community composition and richness at different lake and water depths, and determined the level of connectivity of benthic and planktonic microbial communities. While some overlap between benthos and plankton was observed, the microbial communities were distinct in richness and community composition. The benthic communities comprised microbial mats, which were dominated by Cyanobacteria and Proteobacteria, whereas the planktonic community showed an increased contribution of Bacteroidota. A higher number of 16S rRNA gene ASVs were specific for the plankton than the mats, whereas more 18S rRNA gene ASVs were specific to the microbial mats than the plankton. The benthic eukaryotic community was dominated by ciliates and diatoms while Cryptophyceae were abundant in the plankton. These findings demonstrate that both benthic and planktonic communities need to be considered for census of taxonomic richness, productivity, and ecological processes occurring within Antarctic lakes.","PeriodicalId":12312,"journal":{"name":"FEMS microbiology ecology","volume":" ","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13452585/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148677719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Manganese(II)-oxidizing Ascomycete fungi experience growth benefit on polyphenolic substrate. 锰（II）氧化子囊菌真菌在多酚基质上生长有益。

IF 4.1 3区生物学

FEMS microbiology ecology Pub Date : 2026-07-17 DOI: 10.1093/femsec/fiag076

Carolyn A Zeiner, Ethan D Lynch, Ruby E Haupt, Elizabeth C Gregroy, Colleen M Hansel, Lydia L Godfrey, Ikechukwu D Anunike, Tyler Dennis, Paighton Holtzleicer, Rhiannon Wilson, Mislael Feliberty, Ella C Stenberg

{"title":"Manganese(II)-oxidizing Ascomycete fungi experience growth benefit on polyphenolic substrate.","authors":"Carolyn A Zeiner, Ethan D Lynch, Ruby E Haupt, Elizabeth C Gregroy, Colleen M Hansel, Lydia L Godfrey, Ikechukwu D Anunike, Tyler Dennis, Paighton Holtzleicer, Rhiannon Wilson, Mislael Feliberty, Ella C Stenberg","doi":"10.1093/femsec/fiag076","DOIUrl":"10.1093/femsec/fiag076","url":null,"abstract":"The ability of micro-organisms to oxidize manganese (Mn)(II) to Mn(III) is a strong predictor of litter decomposition rates in soils. While white rot Basidiomycete fungi generate reactive Mn(III) to degrade lignin, it remains unclear whether Mn(II) oxidation may provide a physiological benefit to litter-degrading filamentous Ascomycete fungi. We grew 3 Mn(II)-oxidizing Ascomycetes on phenolic and non-phenolic substrates and evaluated growth, Mn(II) oxidation, and carbon (C) degradation. Extracellular Mn(II) oxidative capacity was inducible by Mn(II) in Stagonospora sp. SRC1lsM3a and Pyrenochaeta sp. DS3sAY3a, indicating an active rather than accidental process. Oxidative capacity was constitutively expressed in Paraconiothyrium sporulosum AP3s5-JAC2a. Compared to Mn-free controls, growth with Mn(II) increased hyphal extension rate in all 3 fungi (6.2%, 31%, and 5.1%, respectively) on minimal medium supplemented with 5 g/l of the polyphenolic substrate tannic acid (TA), but not on non-phenolic substrates. Mn(II) stimulated polyphenolic oxidative capacity in Stagonospora sp. and Pyrenochaeta sp., indicating a link between Mn and degradation of TA. This work suggests a homology between Ascomycete and Basidiomycete fungi in coupling Mn(II) oxidation to C oxidation, suggests a physiological role for Mn(II) oxidation in Ascomycetes, and increases our understanding of how micro-organisms regulate Mn redox cycling and litter decomposition in soils.","PeriodicalId":12312,"journal":{"name":"FEMS microbiology ecology","volume":" ","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13403910/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148445282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Correction to: Impacts of diverse undersown cover crops on seasonal soil microbial properties. 修正：不同地下覆盖作物对季节性土壤微生物特性的影响。

IF 4.1 3区生物学

FEMS microbiology ecology Pub Date : 2026-07-17 DOI: 10.1093/femsec/fiag090

引用次数: 0

Geochemistry shapes microbial diversity and selected functional traits in flowback and produced waters from hydraulically fractured formations. 地球化学决定了水力压裂地层返排水和产出水中微生物的多样性和特定的功能特征。

IF 4.1 3区生物学

FEMS microbiology ecology Pub Date : 2026-07-17 DOI: 10.1093/femsec/fiag070

Ya Deng, Mikayla A Borton, Camilla L Nesbø, Malcolm D Forster, Kurt O Konhauser, Murray K Gingras, Greg G Goss, Kelly C Wrighton, Brian D Lanoil, Cheng Zhong, Daniel S Alessi

{"title":"Geochemistry shapes microbial diversity and selected functional traits in flowback and produced waters from hydraulically fractured formations.","authors":"Ya Deng, Mikayla A Borton, Camilla L Nesbø, Malcolm D Forster, Kurt O Konhauser, Murray K Gingras, Greg G Goss, Kelly C Wrighton, Brian D Lanoil, Cheng Zhong, Daniel S Alessi","doi":"10.1093/femsec/fiag070","DOIUrl":"10.1093/femsec/fiag070","url":null,"abstract":"Microbial communities inhabiting hydraulically fractured subsurface waters are increasingly recognized as important components of unconventional oil and gas systems because they can influence water quality, infrastructure integrity, and biogeochemical processes during flowback and production. However, a quantitative cross-basin understanding of their taxonomic diversity, ecological organization, and potential functional variation remains limited. In this study, we analyzed 16S rRNA gene amplicons, metagenomes, and geochemical data from flowback and produced water from the Sichuan Basin, China, and conducted a quantitative comparison to data previously reported from the same basin and hydraulic fracturing regions in North America. Our findings revealed strong co-occurrence patterns among fermentative, sulfidogenic, and methanogenic micro-organisms, which emerged as core members of microbial communities across all fractured subsurface environments. Notably, microbial diversity and selected metabolic traits differed across basins in the low-salinity systems of China, whereas high-salinity basins in North America exhibited reduced diversity and more constrained metabolic capabilities. These differences are consistent with salinity acting as an important ecological filter across the analyzed basins. Our results indicate that basin-specific geochemical context, particularly salinity, is closely associated with cross-basin differences in microbial diversity, community composition, and selected metabolic traits in fractured subsurface waters. These findings support the value of integrating geological, geochemical, and microbiological information when interpreting microbial risks and water-management strategies in hydraulic fracturing systems.","PeriodicalId":12312,"journal":{"name":"FEMS microbiology ecology","volume":" ","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13377646/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148351393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Correction to: Ghost-rocks' microbiota: metagenomic insights into their influence on the biogeochemistry of karstic cave and groundwater. 修正：鬼岩的微生物群：它们对岩溶洞和地下水生物地球化学影响的宏基因组学见解。

IF 4.1 3区生物学

FEMS microbiology ecology Pub Date : 2026-07-17 DOI: 10.1093/femsec/fiag088

引用次数: 0

Viral genetic diversity and functional potential in polar and subarctic sea ice. 极地和亚北极海冰中的病毒遗传多样性和功能潜力。

IF 4.1 3区生物学

FEMS microbiology ecology Pub Date : 2026-07-17 DOI: 10.1093/femsec/fiag077

Kalle J Pettersson, Tatiana Demina, Eeva Eronen-Rasimus, Simon Roux, Sirja Viitamäki, Igor S Pessi, Hanna M Oksanen, Philipp Assmy, Hermanni Kaartokallio, Jenni Hultman

{"title":"Viral genetic diversity and functional potential in polar and subarctic sea ice.","authors":"Kalle J Pettersson, Tatiana Demina, Eeva Eronen-Rasimus, Simon Roux, Sirja Viitamäki, Igor S Pessi, Hanna M Oksanen, Philipp Assmy, Hermanni Kaartokallio, Jenni Hultman","doi":"10.1093/femsec/fiag077","DOIUrl":"10.1093/femsec/fiag077","url":null,"abstract":"Sea ice plays a critical role in regulating the global climate and serves as a unique habitat for diverse microbial communities. Still, our understanding of viruses in these communities remains limited. To further uncover the diversity and functional potential of viruses in polar and subarctic sea ice, we explored the viral component of Arctic, Baltic Sea, and Antarctic sea ice metagenomes. Altogether, 550 viral operational taxonomic units (vOTUs) were recovered, most of which were putatively classified within the class Caudoviricetes, which comprises bacterial and archaeal tailed double-stranded DNA viruses. Hosts were predicted for 187 vOTUs, with Gammaproteobacteria and Bacteroidia being the most prevalent viral host groups. Potential functions were assigned for 56% of predicted viral gene products, including putative auxiliary metabolic genes (AMGs) involved in oxidative metabolism, photosynthesis, and metabolism regulation under stress conditions. Related viral genomes carrying similar AMGs were detected in other Arctic and more geographically distant freshwater, marine, and ice environments. Genus- and/or family-level links between the studied vOTUs were detected across samples. Our results suggest diverse and complex virus-host interactions in sea ice and highlight the essential roles viruses may play in sea ice ecosystem dynamics across polar and subpolar environments.","PeriodicalId":12312,"journal":{"name":"FEMS microbiology ecology","volume":" ","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13436968/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148519953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Correction to: Volatilomic complexity of three Northern Greenland bacterial isolates across a salt gradient. 更正：格陵兰北部三种细菌分离物在盐梯度上的挥发性复杂性。

IF 4.1 3区生物学

FEMS microbiology ecology Pub Date : 2026-07-17 DOI: 10.1093/femsec/fiag085

引用次数: 0

Experimental evidence for early bacterial inheritance in the giant kelp, Macrocystis pyrifera. 巨藻中早期细菌遗传的实验证据。

IF 4.1 3区生物学

FEMS microbiology ecology Pub Date : 2026-07-17 DOI: 10.1093/femsec/fiag089

Sara Usandizaga, Jessica Beltrán, Gustavo Rodríguez-Valdecantos, Génesis Parada-Pozo, Marie-Laure Guillemin, Sylvain Faugeron, Nicole Trefault, Carolina Camus

{"title":"Experimental evidence for early bacterial inheritance in the giant kelp, Macrocystis pyrifera.","authors":"Sara Usandizaga, Jessica Beltrán, Gustavo Rodríguez-Valdecantos, Génesis Parada-Pozo, Marie-Laure Guillemin, Sylvain Faugeron, Nicole Trefault, Carolina Camus","doi":"10.1093/femsec/fiag089","DOIUrl":"10.1093/femsec/fiag089","url":null,"abstract":"Bacteria associated with macroalgae influence the development, health, and ecological interactions of their hosts. Although vertical transmission of bacterial symbionts has been proposed in some algal species, evidence remains limited. In this study, we combined 16S rRNA gene amplicon sequencing, fluorescence in situ hybridization (FISH), and transmission electron microscopy (TEM) to assess bacterial presence and localization throughout early developmental stages of the brown macroalga Macrocystis pyrifera. Amplicon sequencing detected bacterial taxa in reproductive sori, released spores, and gametophytes, even under sterile conditions and using pasteurized, filtered seawater. Certain bacterial taxa, including Balneola alkaliphila and Marinoscillum luteum, were recurrently detected across multiple developmental stages. FISH imaging showed bacterial signal associated with host tissues across life stages, distinguishable from algal autofluorescence, while TEM observations revealed structures consistent with intracellular bacterial cells within the cytoplasm of gametophyte cells and embedded in sporangial cuticles. Together, these observations suggest that bacteria are associated with both internal and external reproductive tissues, pointing to multiple potential transmission routes. Altogether, our findings provide evidence consistent with early-stage bacterial inheritance in M. pyrifera, contributing to the growing evidence that macroalgal holobionts are assembled, at least in part, through vertical transmission of symbionts.","PeriodicalId":12312,"journal":{"name":"FEMS microbiology ecology","volume":" ","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13452583/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148629947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Re-examining the iron paradox: the influence of growth medium on regulation and functionality of the tropodithietic acid (TDA) biosynthetic pathway in Phaeobacter piscinae. 重新审视铁悖论：培养基对鱼辉杆菌TDA生物合成途径调控和功能的影响。

IF 4.1 3区生物学

FEMS microbiology ecology Pub Date : 2026-07-17 DOI: 10.1093/femsec/fiag080

Lauge Alfastsen, Morgane Mauduit, Michael Scott Cowled, Nikoletta Angela Vig, Robert Friis-Møller, Frederik Valdemar Holck Reimert, Morten Dencker Schostag, Aaron John Christian Andersen, Lone Gram, Sheng-Da Zhang

{"title":"Re-examining the iron paradox: the influence of growth medium on regulation and functionality of the tropodithietic acid (TDA) biosynthetic pathway in Phaeobacter piscinae.","authors":"Lauge Alfastsen, Morgane Mauduit, Michael Scott Cowled, Nikoletta Angela Vig, Robert Friis-Møller, Frederik Valdemar Holck Reimert, Morten Dencker Schostag, Aaron John Christian Andersen, Lone Gram, Sheng-Da Zhang","doi":"10.1093/femsec/fiag080","DOIUrl":"10.1093/femsec/fiag080","url":null,"abstract":"Tropodithietic acid (TDA) is a secondary metabolite with antimicrobial and iron-binding properties, produced by several marine Roseobacter group bacteria. Although classified as a siderophore, TDA is also produced under iron-replete conditions. To address this paradox, we fused the tdaCDE promoter region of Phaeobacter piscinae S26 with a promoter-less gfp reporter gene to monitor the transcription of TDA biosynthetic genes under different conditions and validated its accuracy using RT-qPCR. In both complex ($frac{1}{2}$YTIO) and low-complexity (IOCGH) marine media, iron supplementation repressed tdaCDE transcription and reduced iron-chelation activity. However, TDA production responded differently depending on medium composition: iron suppressed TDA production in IOCGH but increased it in $frac{1}{2}$YTIO. Antimicrobial activity of culture supernatants declined in late-stage iron-limited $frac{1}{2}$YTIO-based cultures, even though tdaCDE transcription and iron-chelating activity increased. Acidification restored antimicrobial activity and increased detectable TDA levels, while several non-antimicrobial structural analogues-detected by LC-MS in non-acidified samples-diminished upon acidification, suggesting pH-driven interconversion. These findings reveal that TDA biosynthesis is regulated by iron availability but that the antimicrobial output of the producer depends on medium composition and pH-driven chemical transformations between TDA and its related structural analogues.","PeriodicalId":12312,"journal":{"name":"FEMS microbiology ecology","volume":" ","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13421778/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148469915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Bacterial sensitivity distributions for biocides and metals. 杀菌剂和金属的细菌敏感性分布。

IF 4.1 3区生物学

FEMS microbiology ecology Pub Date : 2026-07-17 DOI: 10.1093/femsec/fiag075

Daniel Jaen-Luchoro, D G Joakim Larsson, Johan Bengtsson-Palme

{"title":"Bacterial sensitivity distributions for biocides and metals.","authors":"Daniel Jaen-Luchoro, D G Joakim Larsson, Johan Bengtsson-Palme","doi":"10.1093/femsec/fiag075","DOIUrl":"10.1093/femsec/fiag075","url":null,"abstract":"Understanding how potent metals and biocides are for inhibiting bacterial growth is key for understanding risks for ecological disturbances and for co-selection of resistance to antibiotics. The aim of this study was to gather MIC data from the public literature to generate a centralized biocide and metal minimum inhibitory concentration (MIC) dataset, emulating established specialized datasets for antibiotics. The resulting dataset contains data for 53 antibacterial biocides, 21 metals, and 17 related compounds, collected from 289 publications between 1973 and 2024. The dataset includes 20 378 MIC values across 164 bacterial species, with a strong overrepresentation of clinically relevant organisms such as Staphylococcus aureus and Escherichia coli. Biocides like chlorhexidine and benzalkonium chloride, as well as metals such as copper, zinc, arsenic, cadmium, and silver, were the most represented compounds in each case. Some inconsistent MIC values were observed, complicating cross-study comparisons. The data collected in this study emphasizes the urgent need for standardized susceptibility testing methodology and consistent terminology for research on reduced susceptibility to biocides and metals. By centralizing MIC data, this work provides part of the foundation for future efforts to assess ecological risks and co-selection with antibiotic resistance, identify data gaps, and support future regulatory evaluations.","PeriodicalId":12312,"journal":{"name":"FEMS microbiology ecology","volume":" ","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13377640/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148419734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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