Environmental Microbiology Reports is a fully open access journal dedicated to the presentation of high-quality research that advances our knowledge on microorganisms, their function and their interactions with the environment. As opposed to making subjective evaluations of potential impact, the journal's publication criteria are based on high ethical standards and the rigor of the methodology and conclusions reported.

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Structure of Aspergillus flavus populations associated with maize in Greece, Spain, and Serbia: Implications for aflatoxin biocontrol on a regional scale

  •  17 April 2024

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The current research examined the genetic diversity of A. flavus L strain across southern Europe to evaluate the prevalence of genotypes closely related to MUCL54911, the active ingredient of AF-X1. A total of 2173 isolates recovered from maize collected across Greece, Spain, and Serbia in 2020 and 2021 were subjected to simple sequence repeat (SSR) genotyping. The analysis revealed high diversity within and among countries and dozens of haplotypes shared. Linkage disequilibrium analysis indicated asexual reproduction and clonal evolution of A. flavus L strain resident in Europe. Haplotypes closely related to MUCL54911 were found to belong to the same vegetative compatibility group (VCG) IT006 and were relatively common in all the three countries. The results indicate that IT006 is endemic to southern Europe and may be utilized as an aflatoxin mitigation tool.

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Quantification of the dark fungal taxon Cryptomycota using qPCR

  •  14 April 2024

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In recent years, studies have shown that fungi, including the dark fungal taxon Cryptomycota, are abundant but poorly studied in aquatic ecosystems. We developed and validated a Cryptomycota-specific qPCR primer pair targeting the 5.8S region that detects most Cryptomycota but not Microsporidia in environmental samples.

Open access

Utilization of lasso peptides for biodegradation of polycyclic aromatic hydrocarbons

  •  10 April 2024

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Here, we provide the first correlation of the inactivation of a lasso peptide processing gene with an inability to utilize a polycyclic aromatic hydrocarbon.

Open access

Interplay of intracellular and trans‐cellular DNA methylation in natural archaeal consortia

  •  8 April 2024

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This study examined genome methylation in Haloferax lucertense and its DPANN symbiont, Candidatus Nanohalococcus occultus, within an archaeal halophilic xylan-degrading community. It revealed a complex methylation pattern in the genome of H. lucertense and presented the first evidence of cross-methylation by the symbiont's methyltransferases. Statistical analysis indicated a non-random distribution of methylated canonical motifs and a correlation between genome methylation, growth conditions, and community composition.

Open access

Nitrate and oxygen significantly changed the abundance rather than structure of sulphate‐reducing and sulphur‐oxidising bacteria in water retrieved from petroleum reservoirs

  •  5 April 2024

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Both sulphate-reducing bacteria (SRB) and sulphur-oxidising bacteria (SOB) communities showed similarities in the injection and production system. SOB community assembly was more affected by nitrate and oxygen than the SRB community. Nitrate and oxygen changed the abundance of functional genes and their inhibitory effect.

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