ENVIRONMENTAL MICROBIOLOGY环境微生物学
ENVIRONMENTAL MICROBIOLOGY(英文缩写 ENVIRON MICROBIOL),ISSN 1462-2912,eISSN 1462-2920,中文译名:环境微生物学 是一本学术期刊。本页汇总该期刊的最新影响因子、分区信息以及最新收录于 PubMed 的文献,帮助您快速了解期刊全貌。
发文量统计区间：2025-11-01 至 2026-10-31，按本站收录文献的发表日期统计。
期刊介绍
历年影响因子趋势
| JCR 数据年份 | 影响因子 | JCR 分区 |
|---|---|---|
| 2021 | 5.476 | Q2 |
| 2022 | 5.100 | Q2 |
| 2023 | 4.300 | Q2 |
| 2024 | 4.000 | Q2 |
| 2025 | 4.000 | Q2 |
ENVIRONMENTAL MICROBIOLOGY 最新收录文献
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1. Diel Trade-Off Between Anabolism and Catabolism: Coordinated Diel Regulation of Physiology, Transcription and Metabolism in Harmful Algae Microcystis aeruginosa.
PMID:日期:2026-10Diel cycles drive cyanobacterial physiology, yet the transcriptional and metabolic networks underlying diel adaptation in bloom-forming Microcystis remain poorly understood. We integrated physiological measurements, transcriptomics and metabolomics to investigate diel dynamics of Microcystis aeruginosa under a 14-h:10-h light-dark cycle. M. aeruginosa exhibited clear diel rhythms in photosynthesis, cell division, and cell volume, with daytime as the active growth phase. Transcriptomically, daytime-upregulated genes were enriched in anabolic pathways (e.g., photosynthesis, fatty acid, chlorophyll and arginine biosynthesis), whereas nighttime-upregulated genes were associated with catabolic pathways (e.g., TCA cycle and purine/pyrimidine metabolism). Transporter genes remained active throughout the cycle. Metabolically, daytime featured higher levels of carbon fixation intermediates, nitrogen-rich peptides and purine nucleosides, while nighttime showed enrichment of α-linolenic acid and caffeoyl tyrosine. The metabolic network was organized into two opposing but internally correlated modules: a day-enriched anabolic module and a night-enriched catabolic module. Collectively, M. aeruginosa orchestrates a tightly coordinated diel trade-off between daytime anabolism and nighttime catabolism to optimize light energy utilization and metabolic efficiency. These findings provide a multi-omics mechanistic basis for understanding how M. aeruginosa exploits diel cycles for competitive success and offer time-sensitive insights for monitoring and managing cyanobacterial blooms.
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2. Low Levels of Amino Acid Auxotrophy Among Environmental Pseudomonas Isolates.
PMID:日期:2026-10Auxotrophy, the inability of bacteria to synthesize one or multiple essential metabolites, is thought to be common among bacteria. However, studies often rely on either bioinformatic genome-based prediction of auxotrophies or on experiments with low strain numbers. Here, we combine experimental and bioinformatic approaches to assess amino acid auxotrophies among 315 co-isolated natural Pseudomonas strains from pond and soil habitats. Experiments revealed that Pseudomonas isolates are predominantly prototrophs. We identified one histidine auxotroph, one auxotroph with complex intertwined dependencies and four 'fragile' phenotypes showing delayed growth without supplemented amino acids. Applying three bioinformatic pipelines largely confirmed experimental data but yielded specific biases in auxotrophy over- or underestimation. Moreover, none of the pipelines could resolve the genetic basis of the slow-growing phenotypes or of more complex dependencies. Our analysis further revealed the existence of multiple alternative biosynthesis pathways for methionine, proline and phenylalanine, with significant pathway enrichments being linked to phylogeny and habitat. We conclude that combining experiments with bioinformatics is a powerful approach to assess the metabolic potential of environmental bacteria. Moreover, taxa like Pseudomonas can be predominantly prototrophic possibly owing to their generalist lifestyle, thus calling for nuanced ecological concepts predicting auxotrophy levels based on lifestyle and habitat.
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3. Identification of Molecular Pathways Underlying Mn(II) Oxidation in Pseudomonas resinovorans.
PMID:日期:2026-10Manganese oxidation in Pseudomonas resinovorans strain MOB-513 has been previously linked to biofilm formation via the second messenger bis-(3'-5')-cyclic dimeric GMP (c-di-GMP), although the specific molecular components mediating this regulation have not yet been identified. Here we investigate the genetic network underlying Mn(II) oxidation in MOB-513. After transposon mutagenesis, several mutants with differences in Mn(II) oxidation were identified. Targeted analysis of the non-oxidising mutants with Tn insertion disrupting pilC, algR, and hk05390 genes, encoding a core Type IV pilus (Tfp) component, a regulator of pilus biogenesis, and an uncharacterised histidine kinase, respectively, revealed that their phenotype correlated with impaired biofilm formation, reduced intracellular c-di-GMP levels, and decreased Tfp production. We identified two regulators associated with a c-di-GMP-dependent pathway linked to Mn(II) oxidation in MOB-513. The hyper-oxidising strain containing a transposon insertion in the promoter region of the dgc05792 gene showed upregulation of multiple Mn(II)-oxidising enzymes. RR05389 further modulates intracellular c-di-GMP levels and Mn(II) oxidation and functions as a putative cognate response regulator with the histidine kinase HK05390. Together, these results expand our understanding of the molecular pathways underlying Mn(II) oxidation and identify new targets for optimising biological manganese removal.
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5. Assessing the Use of Oxford Nanopore Technologies Sequencing for Detection of Stable Wolbachia Bacterial Strain in Symbiosis in Wild Anopheles Mosquitoes From the WHO African Region.
PMID:日期:2026-09-30Malaria remains a significant global health challenge with 263 million cases in 2023. Anopheles insecticide resistance threatens current vector control methods, and novel strategies are crucial to combat malaria transmission. Wolbachia, an endosymbiotic bacteria that can invade mosquito populations and inhibit pathogen replication, has only recently been shown as a high-density symbiont in two wild Anopheles species. Detection of Wolbachia in symbiosis with Anopheles mosquitoes has relied on PCR amplification of Wolbachia genes and/or Sanger and Illumina sequencing. This study assesses Oxford Nanopore Technology (ONT) to detect Wolbachia, which could facilitate screening for symbiosis with wild Anopheles mosquitoes in endemic settings. We used 46 samples; 10 were pooled for a single MinION flow cell run and the rest processed individually using Flongle flow cells, comparing three mosquito species with three kit combinations. Using the ONT Field sequencing kit, there were 13X more Wolbachia reads in An. demeilloni (genuine symbiosis) than An. gambiae (no evidence of Wolbachia). The ONT 16S barcoding kit and Rapid barcoding kit were then assessed using more economical Flongle flow cells. Wolbachia was successfully identified in An. demeilloni and An. moucheti but not in An. gambiae. This study demonstrates the feasibility of ONT for field-based detection of Wolbachia.
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6. Disturbance History Shapes Microbial Community Assembly and Predictability in a Continuous Culture System.
PMID:日期:2026-09-27Legacy effects that arise when past environmental conditions influence present community responses are increasingly recognized as important drivers of microbial dynamics. However, how repeated disturbances and the intervals between them shape community assembly, and whether they lead to predictable trajectories or more contingent outcomes, remains poorly understood. Here, we used a controlled continuous culture experiment to examine how two alternative histories of repeated minor salinity pulses shaped bacterial community responses to a subsequent major salinity pulse. Using a high-resolution time series of 26 sampling points over 50 days, we detected systematic treatment effects and increasing divergence among within-treatment replicates over time. Community responses to the second salinity pulse depended on disturbance history: Previous exposure altered both the magnitude and direction of richness change, and even promoted richness when recovery time was brief. Moreover, exposure to the subsequent salinity disturbance maintained elevated levels of inferred stochasticity in communities with disturbance histories following the major pulse. Together, these findings demonstrate that disturbance sequence and recovery interval critically shape microbial stability and influence the balance between stochastic and deterministic assembly processes.
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7. Surface Composition and Temperature Interact to Shape Viral Survival and Growth.
PMID:日期:2026-09Environmental factors play a critical role in viral persistence, yet the combined effects of temperature and surface chemistry on viral fitness are not fully understood. In this study, we examined bacteriophages T4 and X174 across copper, stainless steel, and polypropylene plastic surfaces at 4°C and 37°C to assess how these variables influence survival and growth. Both phages exhibited marked differences in survival across surfaces: Copper at 37°C caused rapid inactivation and cooler conditions promoted persistence. Growth varied independently of survival, indicating that viral stability and growth are partially decoupled traits shaped by environmental context. Linear modelling and correlation analyses confirmed significant, non-additive interactions between surface type and temperature. These findings suggest that abiotic factors can act synergistically to determine viral fitness outside the host. More broadly, they refine our understanding of the mechanisms that govern the environmental ecology of viruses.
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8. Source-Independent Enrichment of Light Lanthanides: Microbial Mobilization, Selective Uptake, and Intracellular Storage.
PMID:日期:2026-09Poorly soluble lanthanide minerals are a challenge for the sustainable extraction of lanthanides as key resources for the green energy transition and lanthanide-dependent microbial metabolism. Lanthanide-utilising bacteria are widespread in the environment. Their preference for light lanthanides requires differentiation mechanisms that enable downstream utilisation. Whether lanthanide discrimination occurs during access, mobilisation, uptake, or intracellular processing is mostly unknown and likely controlled by habitat and bioavailability. Using Beijerinckiaceae bacterium RH AL1 and combining transcriptomics, analytics, and electron microscopy, we studied microbial lanthanide mobilisation and uptake from different lanthanide minerals, an alloy, and pure lanthanide compounds. Strain AL1 is a facultative methylotroph that depends on light lanthanides for methanol oxidation and known for periplasmic lanthanide accumulation. We could show that strain AL1 grew with all tested lanthanide sources and selectively enriched light lanthanides independent of the source, lanthanide content, and the proportion of light lanthanides. Transcriptomics revealed that the source type significantly influenced gene expression. Lanthanide discrimination in Beijerinckiaceae bacterium RH AL1 is a multilayered process, likely rooted in the complementary action of chelation, uptake, and periplasmic storage. Strains that mobilise lanthanides and increase their bioavailability can transform mineral-bound lanthanides into shared resources for microbial communities, with implications for sustainable lanthanide use.
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9. Not All Children Are the Same: Differences in the Microbiome Assembly During Early Development of Seaweeds.
PMID:日期:2026-09Microbial symbionts play key roles in macroalgal development, yet the processes structuring early-life microbiomes remain poorly understood. Using laboratory outgrowth experiments and 16S rRNA gene amplicon sequencing we compared microbiome acquisition and assembly during the early development of three distinct macroalgae: Ulva australis (Chlorophyta), Hormosira banksii (Phaeophyceae) and Delisea pulchra (Rhodophyta). All species established distinct bacterial communities within the first week of outgrowth, with significant shifts in community composition and structure associated with major developmental stages. Stage-enriched taxa included Phaeobacter, Roseobacter and Maribacter, which include members reported to influence algal growth or morphogenesis. Vertical inheritance contributed unevenly to the microbiome assembly across hosts. U. australis recruited low-abundance environmental bacteria, possibly via strong host filtering. H. banksii selectively retained a small, consistent subset of adult-derived bacteria, whereas D. pulchra retained fewer of its inherited bacteria. These results suggest that macroalgae can employ diverse transmission and recruitment strategies to assemble early microbiomes, combining selective inheritance with stage-specific retention and/or environmental acquisition.
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10. Differential Responses of Tree Phyllosphere and Rhizosphere Microbiomes to Mycorrhizal Types and Planting Patterns in a Young Subtropical Forest Plantation.
PMID:日期:2026-09Arbuscular mycorrhizal (AM) and ectomycorrhizal (EM) tree species are ubiquitous in subtropical forests and have distinctive root colonisation characteristics and leaf traits, resulting in differences in nutrient acquisition strategies and ecological functions. Here, we investigated the responses of bacteria, fungi and protists inhabiting tree phyllosphere and rhizosphere to tree mycorrhizal types (AM vs. EM) and planting patterns (single or double tree species planting with the same or different mycorrhizal type) in two seasons. Both leaf- and root-associated fungal richness and community composition were strongly structured by tree mycorrhizal type, whereas the bacterial community was primarily influenced by leaf habit. Protistan communities, however, exhibited weak host specificity and were dominated by stochastic processes, with seasonal variation acting as the main influencing factor. Overall, the phyllosphere microbiomes were jointly shaped by leaf traits and seasonal effects, but rhizosphere fungal communities were directly and indirectly regulated by tree mycorrhizal type via root nutrient and colonisation statuses. Altogether, tree phyllosphere and rhizosphere microbiomes differ from the interaction of mycorrhizal symbiosis, planting pattern and seasonality, with distinct ecological processes manipulating across bacteria, fungi and protists. This study highlights the necessity of integrating tree mycorrhizal types and above- and belowground habitats perspectives to better understand forest microbiomes.