{"title":"Correction to 'Isolation and Identification of Pathogenic Bacteria Present in Commercially Important Fish, Shellfish, Water, and Soil Samples of Kaptai Lake, Bangladesh'.","authors":"","doi":"10.1111/1758-2229.70367","DOIUrl":"10.1111/1758-2229.70367","url":null,"abstract":"","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 3","pages":"e70367"},"PeriodicalIF":3.1,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13239436/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148136270","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}
Haitian Bo, Ziyuan Zhang, Amane Fujiwara, Yuri Fukai, Masato Ito, Satoshi Kimura, Marc Oggier, Hisatomo Waga, Laura Whitmore, Koji Hamasaki, Takuhei Shiozaki
{"title":"Sediments as Potential Sources of Non-Cyanobacterial Diazotrophs in Arctic Sea Ice and Seawater.","authors":"Haitian Bo, Ziyuan Zhang, Amane Fujiwara, Yuri Fukai, Masato Ito, Satoshi Kimura, Marc Oggier, Hisatomo Waga, Laura Whitmore, Koji Hamasaki, Takuhei Shiozaki","doi":"10.1111/1758-2229.70372","DOIUrl":"10.1111/1758-2229.70372","url":null,"abstract":"<p><p>Although nitrogen fixation has recently been recognized in the Arctic Ocean, the biogeographical patterns of diazotrophs in this region remain poorly resolved, leaving a critical gap in understanding of environmental nitrogen inputs. To address these uncertainties, we examined diazotrophic and overall prokaryotic communities in first-year land-fast sea ice, seawater, and sediments of the Pacific Arctic to identify habitat-specific patterns. Diazotrophic communities in sea ice and sediments exhibited stable structures across all samples, with both habitats consistently dominated by the anaerobic phylum Thermodesulfobacteriota (particularly Desulfuromonadia) and other sulfate-reducing lineages. In contrast, seawater communities were spatially heterogeneous, with some samples showing elevated abundances of Thermodesulfobacteriota. Prokaryotic communities showed marked differences among habitats, with Thermodesulfobacteriota representing a major group in sediments. β-diversity and amplicon sequence variant (ASV)-sharing analyses revealed extensive overlap between sea ice and sediment diazotrophs. Given that sea ice is a transient habitat, these findings suggest that diazotrophs in sea ice originate from underlying sediments. Moreover, the Thermodesulfobacteriota ASVs detected in seawater were identical to those in sediments, indicating likely resuspension. Collectively, our results highlight sediments as key reservoirs of diazotrophs in the Pacific Arctic, particularly on the continental shelf.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 3","pages":"e70372"},"PeriodicalIF":3.1,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13238701/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148160951","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}
Cássia Cristina Rezende Mirza, Ana Paula Santos Oliveira, Maria Eduarda Silvério Mateus, Princewill Chukwuma Asobia, Cleiton Mateus Sousa, Laylla Luanna de Mello Frasca, Mariana Aguiar Silva, Enderson Petrônio de Brito Ferreira
{"title":"Soybean Crop Response Treated With Different Multifunctional Inoculants Under Field Conditions","authors":"Cássia Cristina Rezende Mirza, Ana Paula Santos Oliveira, Maria Eduarda Silvério Mateus, Princewill Chukwuma Asobia, Cleiton Mateus Sousa, Laylla Luanna de Mello Frasca, Mariana Aguiar Silva, Enderson Petrônio de Brito Ferreira","doi":"10.1111/1758-2229.70363","DOIUrl":"10.1111/1758-2229.70363","url":null,"abstract":"<p>Soybean is the main crop in Brazilian agribusiness, but its production is limited by low soil phosphorus availability. An alternative to mitigate this constraint is the use of plant growth-promoting bacteria capable of solubilising phosphorus and producing phytohormones. This study aimed to evaluate soybean performance in response to different multifunctional inoculants under field conditions. Experiments were carried out in the 2021/22 and 2022/23 seasons in Santo Antônio de Goiás and in 2021/22 in Ceres, Brazil. The experimental design was a randomized block with 20 treatments and five replications. Treatments consisted of seed inoculation of DonMario 68i69 IPRO and NS 6906 IPRO cultivars with phosphate-solubilising bacteria (BRM 063573, BRM 67205, BRM 67207), auxin-producing bacteria (BRM 063574, BRM 36549, BRM 67206) and their pairwise combinations, plus five controls (Ab-V5, BiomaPhos, T0, T50, T100). Data were analysed using multivariate analysis in R and variance analysis (<i>F</i> test) at a 5% significance level, followed by Scott-Knott test. The combination BRM 67207 (<i>Bacillus subtilis</i>) + BRM 67206 (<i>Bacillus pumilus</i>) showed the best results across all experiments, enhancing pods per plant, grain yield, root biomass, total root length and root volume. This combination stands out as a promising bioinput for soybean production.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13179116/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147947085","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}
Khumbudzo Ndhlovu, Adeola Salawu-Rotimi, Francina L. Bopape, Prudence N. Mtsweni, Olubukola Oluranti Babalola, Ahmed Idris Hassen
{"title":"Elucidating the Functional and Taxonomic Diversity of Soil Microbial Communities From Three Commercial Soybean Farms in South Africa","authors":"Khumbudzo Ndhlovu, Adeola Salawu-Rotimi, Francina L. Bopape, Prudence N. Mtsweni, Olubukola Oluranti Babalola, Ahmed Idris Hassen","doi":"10.1111/1758-2229.70360","DOIUrl":"10.1111/1758-2229.70360","url":null,"abstract":"<p>Prior to the introduction of the exotic inoculant strain of <i>Bradyrhizobium</i>, South African soils lacked the rhizobia that nodulate soybean. Five decades of soybean inoculation practice resulted in the establishment of the <i>Bradyrhizobium</i> population in many soybean growing fields. However, there is no record of the magnitude of this establishment and its impact on the taxonomic and functional abundance of other microbes. Here we use a shotgun metagenomics approach to elucidate the taxonomic and functional profiles of the soil microbes from selected commercial soybean farms in South Africa. Metagenomics of the total sequences revealed that Proteobacteria, Actinobacteria, Firmicutes, Acidobacteria and Bacteroitedes are the prevalent phyla which differed in their relative abundance. <i>Bradyrhizobium</i> was the predominant genus at all three locations. Predicted functions detected genes essential for nitrogen metabolism, including nitrogen fixation, which have been unveiled in this study at a higher rate in all locations investigated. This study uncovers the microbial communities associated with soybean soils in South Africa. The study also generated vital information on the establishment of <i>Bradyrhizobium</i> spp. in the soils of soybean farms, providing a clue on whether inoculation of soya beans is always necessary. The findings, however, warrant further field investigations before any recommendations are rendered.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13178142/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147947092","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}
David Fagundes, Laís Mara Santana Costa, Alexandro Cagliari, Diego Prado de Vargas, Alexandre Rieger
{"title":"Microbial Community Shifts and Plant Performance Improvements Driven by Bacillus firmus in Pampa Agroecosystems","authors":"David Fagundes, Laís Mara Santana Costa, Alexandro Cagliari, Diego Prado de Vargas, Alexandre Rieger","doi":"10.1111/1758-2229.70315","DOIUrl":"10.1111/1758-2229.70315","url":null,"abstract":"<p>The impact of <i>Bacillus firmus</i>–based bionematicides on rhizosphere microbiota and plant performance remains poorly understood in complex agroecosystems. This study evaluated the effects of <i>B. firmus</i> application on soil microbial communities, nematode dynamics, and soybean productivity in the Pampa biome. Our results demonstrate that <i>B. firmus</i> significantly modulates the composition and diversity of soil microbiota, with effects varying across locations and over time. Treated areas exhibited shifts in bacterial communities, including increased abundance of beneficial taxa, while fungal diversity tended to decrease, likely due to the combined effect of the fungicide used in seed treatment. Despite persistent populations of target nematodes such as <i>Pratylenchus brachyurus</i> and <i>Heterodera glycines</i>, treated areas showed reduced root infestation in specific stages and locations. Importantly, the application of <i>B. firmus</i> consistently enhanced soybean shoot and root growth, resulting in productivity gains of 6%–7% across all sites. These findings reveal that <i>B. firmus</i> not only contributes to plant growth promotion but also induces significant, yet context-dependent, shifts in rhizosphere microbial communities. The study highlights the ecological complexity of microbial responses to biocontrol agents and underscores the importance of integrating microbiome dynamics into sustainable nematode management strategies in agroecosystems.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13179124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147947104","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}
Yarui Cheng, Xiaoyu Lu, Zunwei Ke, Lu Gan, Yaqing Zhou, Fengjian Wang
{"title":"The Seasonal and Spatial Patterns of Planktonic Bacterial and Fungal Community Structure and the Response to Environmental Factors in the Danjiangkou Reservoir, China","authors":"Yarui Cheng, Xiaoyu Lu, Zunwei Ke, Lu Gan, Yaqing Zhou, Fengjian Wang","doi":"10.1111/1758-2229.70362","DOIUrl":"10.1111/1758-2229.70362","url":null,"abstract":"<p>Planktonic microbial communities are essential for sustaining the cycling of materials and the flow of energy. However, little research has examined how planktonic bacteria and fungi in the Danjiangkou Reservoir (DJKR) are distributed and function across different seasons. The findings indicated that the DJKR maintained generally favourable water quality. Seasonal changes have a more pronounced effect on fungal diversity than on bacterial diversity, resulting in a significant decrease in fungal diversity. Among bacterioplankton, the dominant phyla were Proteobacteria, Actinobacteria and Bacteroidetes, while Basidiomycota, Ascomycota, Mucoromycota and Chytridiomycota accounted for 81.22% of the total fungi, being the dominant fungal groups. According to the KEGG annotation, the most active functions in bacteria and fungi were amino acid metabolism and translation, respectively. Seasonal shifts exerted a notable effect on the abundance of genes participating in nitrogen and phosphorus cycles. Total nitrogen (TN), pH, total phosphorus (TP) and water temperature (WT) were identified by redundancy analysis (RDA) as the key environmental factors influencing the community structure of bacteria and fungi. Stochastic processes exerted a predominant influence on the assembly dynamics of planktonic bacterial and fungal communities. This study offers a scientific foundation for protecting water resources at the DJKR.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"18 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13169159/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147924932","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}