Environmental Microbiology Reports最新文献_第2页

Diversity and Dispersal of Fungi Along a Subtropical Land-to-Sea Continuum. 亚热带陆地-海洋连续体真菌的多样性和扩散。

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2026-04-01 DOI: 10.1111/1758-2229.70297

M Meyneng, L Tedersoo, G Burgaud, V Mikryukov, F Carriconde, H Lemonnier, R Siano

{"title":"Diversity and Dispersal of Fungi Along a Subtropical Land-to-Sea Continuum.","authors":"M Meyneng, L Tedersoo, G Burgaud, V Mikryukov, F Carriconde, H Lemonnier, R Siano","doi":"10.1111/1758-2229.70297","DOIUrl":"10.1111/1758-2229.70297","url":null,"abstract":"This study examines the fungal and fungal-like stramenopile communities along the land-to-sea continuum to explore microbial connectivity across terrestrial and marine ecosystems. In addition to providing new ecological knowledge on coastal communities, the objectives were to assess the presence of terrestrial fungi and evaluate their potential as bioindicators of riverine influence on marine environments. Conducted in New Caledonia (southwest Pacific), the research involved 113 marine samples (water and sediment) and 148 additional soil samples from tropical/subtropical Pacific regions. Sampling spanned spatial and temporal gradients, including dry periods and a post-cyclone runoff event. We used high-throughput long-read amplicon sequencing of the full-length ITS rRNA gene, complemented by inference of fungal ecological traits from genus-level annotations. In total, 1653 fungal OTUs were identified in marine samples, with distinct communities in sediment and water. Terrestrial fungal taxa were also detected in marine environments, with 306 genera exhibiting varying occurrence across sample types and periods. The cyclone runoff temporarily increased the richness of terrestrial fungal taxa by up to threefold, underscoring the impact of extreme events on marine coastal assemblages. Overall, this work provides the first study of fungal communities along New Caledonia's coastlines, highlighting fungal dispersal as a key component of land-to-sea connectivity.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 2","pages":"e70297"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13052330/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147615523","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

Differences in Prokaryotic Community Composition Between Two Climatically Contrasting Years in an Arctic Fjord Ecosystem. 北极峡湾生态系统两个气候对比年份的原核生物群落组成差异

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2026-04-01 DOI: 10.1111/1758-2229.70282

Eva Lopes, Miguel Semedo, Allison Bailey, Philipp Assmy, Catarina Magalhães

{"title":"Differences in Prokaryotic Community Composition Between Two Climatically Contrasting Years in an Arctic Fjord Ecosystem.","authors":"Eva Lopes, Miguel Semedo, Allison Bailey, Philipp Assmy, Catarina Magalhães","doi":"10.1111/1758-2229.70282","DOIUrl":"10.1111/1758-2229.70282","url":null,"abstract":"Kongsfjorden, a glaciated fjord in the Arctic, is shaped by Atlantic water inflow and seasonal glacier melt. This study compared prokaryotic community dynamics during spring and summer in two contrasting years, 2019 and 2020. In spring 2019, warmer Atlantic water increased temperatures and nutrients, supporting a Phaeocystis pouchetii-dominated bloom. In contrast, spring 2020 was colder, with extensive sea ice and a bloom succession from diatoms to P. pouchetii. Summer surface waters showed strong glacier runoff influence and low-biomass, flagellate-dominated phytoplankton. Greater prokaryotic diversity was observed in 2019, particularly at the surface, which was supported by network analysis revealing fewer interactions among prokaryotes in surface waters during 2020 compared to 2019. Prokaryotic community composition clearly differed between the 2 years, showing vertically homogeneous communities and higher cyanobacterial abundance in 2019, while in 2020 communities were more vertically heterogeneous and potentially locally adapted. These patterns reflect greater Atlantic water influence in 2019 versus more stratified Arctic conditions in 2020. Surface and bottom communities showed contrasting trends, shaped by depth-specific environmental conditions. Our findings highlight the sensitivity of Arctic microbial communities to shifts in hydrography and bloom dynamics and provide important perspectives on the ecological stability and dynamics of Arctic microbial communities under changing environmental conditions.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 2","pages":"e70282"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13045347/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588936","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

Rhizosphere Microbiome as an Underexplored Resource for Agroecosystem Sustainability: Insights From the Carrot Root Zone. 根际微生物组作为农业生态系统可持续性的未充分开发的资源：来自胡萝卜根区的见解。

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2026-04-01 DOI: 10.1111/1758-2229.70325

Alaba Adewole Adebayo, Olubukola Oluranti Babalola

{"title":"Rhizosphere Microbiome as an Underexplored Resource for Agroecosystem Sustainability: Insights From the Carrot Root Zone.","authors":"Alaba Adewole Adebayo, Olubukola Oluranti Babalola","doi":"10.1111/1758-2229.70325","DOIUrl":"10.1111/1758-2229.70325","url":null,"abstract":"Rhizosphere microbiome is critical for nutrient turnover, pathogen suppression, and stress modulation, forming the basis of microbial products relevant to agriculture. However, microbial communities associated with carrot root zone remain relatively underexplored, with limited studies focused beyond descriptive surveys. Here, we synthesise existing information on the structural, functional, and ecological dynamics of the carrot rhizomicrobiome, highlighting its emerging yet underdeveloped mechanistic profiling. Existing literature indicates that carrot-associated microbes may play a role in nutrient mobilisation, growth promotion, and antagonism. The early proof-of-concept works demonstrate that the microbes may gain potential applications in biofertilizers, biostimulants, and biocontrol agents. While these functions are strongly influenced by soil properties, genotype, and management, only a few carrot-specific isolates/consortia have been multi-environmentally validated. The limited progress partly reflects the overall underrepresentation of vegetables in microbiome-based studies, compared to other major crops. We explored the key characteristics, economic, and agricultural significance of the carrot rhizosphere, highlighting its richness with beneficial microorganisms. Among the gaps identified are inadequate functional-level and field trial, and insufficient multi-omics integration, which currently limit biotechnological translation. Addressing these gaps through targeted isolation, mechanistic functional and field validation could position carrot rhizosphere microbiome as a valuable yet underexplored resource for enhancing agroecosystem sustainability.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 2","pages":"e70325"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13045503/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588949","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

Soil Biodiversity of Eucalyptus saligna: Insights Into Bacterial and Nematode Communities. 盐叶桉土壤生物多样性：细菌和线虫群落的研究。

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2026-04-01 DOI: 10.1111/1758-2229.70341

Ebrahim Shokoohi, Peter Masoko

{"title":"Soil Biodiversity of Eucalyptus saligna: Insights Into Bacterial and Nematode Communities.","authors":"Ebrahim Shokoohi, Peter Masoko","doi":"10.1111/1758-2229.70341","DOIUrl":"10.1111/1758-2229.70341","url":null,"abstract":"Soil microorganisms and nematodes are key regulators of soil function, yet their co-occurrence in Eucalyptus rhizospheres remains poorly understood. In this exploratory study, we characterised bacterial and nematode communities associated with Eucalyptus saligna soils in Limpopo, South Africa, using high-throughput 16S rRNA gene sequencing and nematode surveys. Bacterial assemblages were dominated by Proteobacteria (42%), Acidobacteria (28%), Actinobacteria (12%) and Planctomycetes (9%). Eleven bacterial genera occurred across all sites, with Rhizobiales (prominence value, PV = 315,350) and Xanthobacteraceae (PV = 292,930) emerging as the most prominent taxa. Nematode surveys identified 19 genera, including plant-parasitic such as Meloidogyne (PV = 5759.1) and abundant free-living such as Tylolaimorphus (PV = 4150.0) and Acrobeloides (PV = 2900.0). Principal component analysis showed that bacterial communities were associated with soil pH, salinity and nitrogen forms, whereas nematode assemblages were associated with phosphate and sand content, together explaining 83%-90% of total variance. Network analysis indicated that all sampling sites functioned as central hubs (degree = 19-23; eigenvector centrality = 0.90-1.0), integrating nematode-bacteria associations. Key connector taxa included Acrobeloides, Wilsonema and Aphelenchoides, as well as bacteria such as Rhizobiales and Acidothermus. These findings provide a baseline framework for understanding belowground biodiversity and co-occurrence patterns in Eucalyptus plantation soils.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 2","pages":"e70341"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13061582/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147637428","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

Migratory Birds Facilitate the Spread of Multidrug-Resistant Pathogenic Escherichia coli in Tanguar Haor of Bangladesh. 候鸟促进了多重耐药致病性大肠杆菌在孟加拉国坦瓜尔哈尔的传播。

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2026-04-01 DOI: 10.1111/1758-2229.70344

Most Nahida Khatun, Sourav Chakraborty, Taslima Akter, Junaid Sarker Ifte, Jahan Ara Begum, Md Alimul Islam, Rokshana Parvin, Muhammad Tofazzal Hossain, Emdadul Haque Chowdhury

{"title":"Migratory Birds Facilitate the Spread of Multidrug-Resistant Pathogenic Escherichia coli in Tanguar Haor of Bangladesh.","authors":"Most Nahida Khatun, Sourav Chakraborty, Taslima Akter, Junaid Sarker Ifte, Jahan Ara Begum, Md Alimul Islam, Rokshana Parvin, Muhammad Tofazzal Hossain, Emdadul Haque Chowdhury","doi":"10.1111/1758-2229.70344","DOIUrl":"10.1111/1758-2229.70344","url":null,"abstract":"This study investigated the occurrence of pathogenic and multidrug-resistant (MDR) Escherichia coli in migratory birds inhabiting wetland habitats. A total of 167 freshly voided faecal samples were collected from migratory birds during the winters of 2023 and 2024. Isolation and identification of E. coli were performed using standard cultural and molecular techniques. Antimicrobial susceptibility testing was performed against 19 antibiotics, followed by the detection of resistance genes. Overall, the E. coli detection rate was 68.62% and 46.15% in 2023 and 2024, respectively. Multiple diarrheagenic E. coli pathotypes (ETEC, EAEC, EHEC, EPEC and EIEC) were identified, where the isolates from 2023 showed greater diversity. Most of the E. coli isolates were identified as MDR, with MDR patterns being more frequent in 2024. Resistance genes associated with tetracycline, β-lactam and aminoglycoside antibiotics, where tetB, tetO, tetC, blaCTX, blaSHV and blaTEM were more prevalent than the rest of the genes. Our findings indicate that migratory birds are potential mobile reservoirs and disseminators of MDR E. coli within the wetland ecosystems, warranting coordinated and sustained One Health surveillance across environmental, wildlife and public health.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 2","pages":"e70344"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13070580/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147669265","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

Phosphorus Acquisition Strategies Among Phytoplankton and Free-Living Bacterial Communities in the Baltic Proper. 波罗的海地区浮游植物和自由生活细菌群落的磷获取策略。

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2026-04-01 DOI: 10.1111/1758-2229.70332

Mollica Thomas, Farnelid Hanna, Lindehoff Elin, Lundin Daniel, Pinhassi Jarone, Legrand Catherine

{"title":"Phosphorus Acquisition Strategies Among Phytoplankton and Free-Living Bacterial Communities in the Baltic Proper.","authors":"Mollica Thomas, Farnelid Hanna, Lindehoff Elin, Lundin Daniel, Pinhassi Jarone, Legrand Catherine","doi":"10.1111/1758-2229.70332","DOIUrl":"10.1111/1758-2229.70332","url":null,"abstract":"Nutrient limitation in the Baltic Proper exhibits temporal variations, with nitrogen limiting diatom and dinoflagellate-dominated spring blooms, while phosphorus constraints characterise the cyanobacterial summer blooms. Phosphorus is a key element for cellular functions and poses significant challenges for planktonic microbial communities under limited availability. Numerous studies have explored strategies phytoplankton and bacteria employ to cope with phosphorus scarcity. However, the temporal dynamics of phosphorus acquisition within natural communities remain poorly understood. Using metatranscriptomics, this study addresses this gap by examining how planktonic microbial communities acquire phosphorus over a year-long monitoring at an offshore station. Targeting genes related to phosphorus degradation, transport and membrane remodelling, we unveil diverse strategies employed by planktonic microbial communities to acquire phosphorus. Our findings highlight transporter and membrane remodelling-related genes are expressed at high levels across the year, suggesting their important role in coping with phosphorus acquisition. Our dataset reveals distinct strategies between phytoplankton and free-living bacteria under nutrient-limited conditions. While eukaryotic phytoplankton appear to rely more on recycling internal stores of phosphorus via membrane remodelling processes, free-living bacteria appear more prone to optimize extracellular scavenging mechanisms. These insights reveal the complex physiological adjustments of marine microbial communities to fluctuating phosphorus availability in the Baltic Sea.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 2","pages":"e70332"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13086504/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696914","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

Comparative Analysis of Lavandula Dentata Rhizosphere Microbiota Across Different Developmental Stages in a Semi-Arid Area. 半干旱区牙薰衣草不同发育阶段根际微生物群的比较分析

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2026-04-01 DOI: 10.1111/1758-2229.70318

Oumaima Akachoud, Julien Langrand, Hafida Bouamama, Natacha Facon, Frédéric Laruelle, Ahmed Qaddoury, Anissa Lounès-Hadj Sahraoui

{"title":"Comparative Analysis of Lavandula Dentata Rhizosphere Microbiota Across Different Developmental Stages in a Semi-Arid Area.","authors":"Oumaima Akachoud, Julien Langrand, Hafida Bouamama, Natacha Facon, Frédéric Laruelle, Ahmed Qaddoury, Anissa Lounès-Hadj Sahraoui","doi":"10.1111/1758-2229.70318","DOIUrl":"10.1111/1758-2229.70318","url":null,"abstract":"The positive effects of soil microbiota on plant growth and stress tolerance are well established. However, their role in aromatic and medicinal plants, particularly under arid conditions, remains underexplored. This study examined rhizospheric microbial community dynamics across developmental stages of wild Lavandula dentata L., a semi-arid species threatened with extinction in Morocco. Results showed total microbial biomass peaked at senescence, mainly due to increases in Gram-negative (25.02 μg/g) and Gram-positive (18.11 μg/g) bacterial biomasses. Beta diversity analysis revealed consistent dominance of Actinobacteria, with peaks during senescence and the vegetative phase. Saprotrophic fungi (8.81 μg/g) and arbuscular mycorrhizal fungi (AMF) (4.16 μg/g) biomasses peaked at flowering. The fungal community was dominated by the Ascomycota phylum, with no significant variation across stages. The AMF genus Glomus remained most abundant throughout development. Senescence featured the most complex interkingdom interaction network and high ecological niche heterogeneity, reflected by more negative associations. Overall, the rhizospheric microbial community of L. dentata shifts with plant development, with flowering and senescence as key phases for microbial biomass accumulation and community diversification. Flowering and senescienceez stages seem to represent promising targets for developing biostimulant consortia to improve soil health and crop productivity in arid environments.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 2","pages":"e70318"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13053143/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147466261","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

Energetics and Ecological Implications of Bacterial Electron Transport Chains. 细菌电子传递链的能量学及其生态学意义。

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2026-04-01 DOI: 10.1111/1758-2229.70338

Ningdong Xie, Allison M Brown, Xin Wang

引用次数: 0

Transmisssion Dynamics of Enterococcus spp. Throughout the Heliconius erato phyllis (Lepidoptera; Nymphalidae) Life Cycle. 鳞翅目；蛱蝶科)全生命周期中肠球菌的传播动力学。

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2026-04-01 DOI: 10.1111/1758-2229.70336

Rosana Huff, Janira Prichula, Luana Silva Dornelles, Rebeca Inhoque Pereira, Jeverson Frazzon, Ana Paula Guedes Frazzon

{"title":"Transmisssion Dynamics of Enterococcus spp. Throughout the Heliconius erato phyllis (Lepidoptera; Nymphalidae) Life Cycle.","authors":"Rosana Huff, Janira Prichula, Luana Silva Dornelles, Rebeca Inhoque Pereira, Jeverson Frazzon, Ana Paula Guedes Frazzon","doi":"10.1111/1758-2229.70336","DOIUrl":"10.1111/1758-2229.70336","url":null,"abstract":"Enterococcus spp. are members of the gut microbiota of Heliconius butterflies, although their transmission remains poorly characterised. We used pulsed-field gel electrophoresis (PFGE) to compare Enterococcus strains from developmental stages of Heliconius erato phyllis and larval diet leaves, assessing their presence across the life cycle. Two female butterflies were collected, and 432 enterococci were isolated from eggs, larval instars, pupae, adults and larval diet leaves. Species were identified by MALDI-TOF MS, and antimicrobial susceptibility profiles were determined. Enterococcus faecalis and Enterococcus casseliflavus predominated across the butterfly life cycle and larval diet leaves, with isolates showing diverse resistance profiles. To minimise redundancy, isolates from the same sample, belonging to the same species and showing identical antimicrobial resistance profiles were considered closely related; therefore, 52 of 432 enterococci (24 E. casseliflavus and 28 E. faecalis) were selected for genetic characterisation. PFGE revealed genetic relatedness between leaf- and larva-derived strains, consistent with diet-mediated horizontal transmission. In addition, related profiles between isolates from developmental stages may suggest persistence of enterococci across the life cycle. These findings demonstrate the prevalence of E. faecalis and E. casseliflavus throughout the life cycle of H. erato phyllis and suggest that diet-associated horizontal transmission may contribute to their maintenance.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 2","pages":"e70336"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13056423/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147631896","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

Low Abundance Taxa Show Diverse Microbial Symbiotic Interactions With the Freshwater Sponge, Radiospongilla crateriformis, Pre and Post Gemmulation. 低丰度分类群与淡水海绵、标准形放射性海绵、繁殖前后的微生物共生相互作用

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2026-04-01 DOI: 10.1111/1758-2229.70331

Taylor A Strope, Cole G Easson, Cara L Fiore

{"title":"Low Abundance Taxa Show Diverse Microbial Symbiotic Interactions With the Freshwater Sponge, Radiospongilla crateriformis, Pre and Post Gemmulation.","authors":"Taylor A Strope, Cole G Easson, Cara L Fiore","doi":"10.1111/1758-2229.70331","DOIUrl":"10.1111/1758-2229.70331","url":null,"abstract":"Freshwater sponges, most of which have a dormant stage with gemmules, are well poised for microbiome focused experiments. Here, we leveraged field collections of freshwater sponges pre-gemmule (Pre) and post-gemmule (Post) formation to compare the microbial symbiont metatranscriptome at the two developmental stages. There were no broad changes to the microbiome in composition between the two stages; however, there were significant differences in the abundance of several bacterial taxa and functional genes between Pre and Post sponge samples. For example, many Polynucleobacter spp. increased from Pre to Post samples, but no putative symbiosis factors were associated with Polynucleobacter and these may be loosely associated with the sponges. In contrast, we hypothesise that Flavobacterium spp. are facultative symbionts of freshwater sponges that begin to leave when the sponge tissue degrades, or they may decrease their metabolic activity. Functions attributed to Flavobacterium spp. such as type IX secretion system (T9SS) component and ankyrin repeat domains, all decreased in the Post samples and suggests that this group can interact with the sponge host or be free-living. These results provide a foundation for future hypothesis testing and experimental work with the microbiomes of freshwater sponges.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 2","pages":"e70331"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13052501/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147626691","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