Review Articles

Genome-scale models (GEMs) are mathematical representations of reconstructed networks that facilitate computation and prediction of phenotypes, and are useful tools for predicting the biological capabilities of microorganisms. In this Review, Fang, Lloyd and Palsson discuss the development and the emerging application of GEMs.

The COVID-19 pandemic has prompted unparalleled progress in the development of vaccines and therapeutics in many countries, but it has also highlighted the vulnerability of resource-limited countries in Africa. Margolin and colleagues review global efforts to develop SARS-CoV-2 diagnostics, therapeutics and vaccines, with a focus on the opportunities and challenges in Africa.

Fungi originated in a freshwater environment and their evolution accompanied the rise of algae and land plants. In this Review, Berbee and colleagues examine the fossil and genomic record of ancient fungi and the inferences we can make about their lifestyle.

In this Review, Fan and Pedersen discuss how the gut microbiota and derived microbial compounds may contribute to human metabolic health and to the pathogenesis of common metabolic diseases, and highlight examples of microbiota-targeted interventions aiming to optimize metabolic health.

Escherichia coli is a commensal of the vertebrate gut as well as an opportunistic pathogen. In this Review, Denamur and colleagues explore the emergence of virulence during the evolution of E. coli, with a focus on the main ExPEC, InPEC and hybrid clones.

In this Review, Rotello and colleagues discuss the mechanisms by which nanomaterials can be used to target antibiotic-resistant bacterial infections, highlight design elements and properties of nanomaterials that can be engineered to enhance potency, and explore recent progress and remaining challenges for clinical implementation of nanomaterials as antimicrobial therapeutics.

Newly developed antibacterial nanostructured surfaces show excellent prospects as next-generation biomaterials. In this Review, Ivanova, Stoodley and colleagues explore the different mechanisms by which various surface nanopatterns exert the necessary physico-mechanical forces on the bacterial cell membrane that will ultimately result in cell death.

In this Review, Trivedi and colleagues explore the interactions between plants, their associated microbial communities and the environment, and also discuss how those interactions shape the assembly of plant-associated microbiomes and modulate their beneficial traits.

Advances in imaging techniques have revealed an unexpected abundance and diversity of organelles in bacteria. In this Review, Greening and Lithgow outline the different types of bacterial organelles and discuss common themes in their formation and function.

Mycorrhizas are ubiquitous mutualistic symbioses established between plant roots and soil fungi. In this Review, Bonfante and colleagues explore the origin and evolution of mycorrhizal fungi, the diversity of their interactions with host plants and the potential of application of mycorrhizal symbioses in the development of sustainable agricultural and environmental strategies.

The archaeal community, the archaeome, is now increasingly recognized as an important component of host-associated microbiomes. In this Review, Moissl-Eichinger and colleagues discuss the diversity and potential roles of the archaea associated with protists, plants and animals, highlighting the potential roles of archaea in human health and disease.

Borrelia burgdorferi has a complex life cycle with several different hosts, causing Lyme disease when it infects humans. In this Review, Fikrig and colleagues discuss how B. burgdorferi infects and interacts with its tick vector to ensure onward transmission.

During target protection, a resistance protein physically associates with an antibiotic target to rescue the latter from antibiotic-mediated inhibition. In this Review, O’Neill and colleagues describe the different molecular mechanisms underlying target protection and emphasize the importance of this phenomenon as a cause of clinically significant antibiotic resistance.

In this Review, Tsai and Cullen discuss how host epigenetic and epitranscriptomic processes regulate viral gene expression at the levels of chromatin and RNA function, respectively, and explore how viruses modify, avoid or utilize these processes in order to promote their replication or persistence.

In this Review, Rumbaugh and Sauer discuss the environmental cues and microorganism-derived signals that lead to the biofilm dispersal response, recent findings of matrix-degrading enzymes required for cells to liberate themselves from the biofilm matrix, novel insight into the mechanisms and regulation of dispersal, and the implications of these insights for biofilm control efforts.

Bats harbour a large number of different viruses, some of which have spilled over to cause human disease. In this Review, Letko, Munster and colleagues discuss the diversity of bat viruses and the factors that determine the emergence of zoonotic viruses from bats.

Large-scale metagenomic analyses are vastly increasing the rate of discovery of variation within species but they are also leading to scientific and semantic challenges. Bork and colleagues highlight the advances and challenges that are resulting from the use of metagenomic data to study within-species diversity.

Actinobacteria are versatile producers of bioactive natural products. In this Review, van Wezel and colleagues discuss ecological and genomic insights into the mechanisms governing natural product metabolism and how those insights can be translated into approaches for computational and experimental genome mining strategies that yield novel bioactive molecules, in particular antibiotics.

In this Review, Lopatkin and Collins discuss key areas of predictive biology that are of growing interest to microbiology, the challenges associated with the innate complexity of microorganisms and the value of quantitative methods in making microbiology more predictable.

Antibiotic persistence is a threat to effective treatment of bacterial infections. In this Review, Bakkeren, Diard and Hardt discuss the evolutionary forces that have favoured the development of persisters in populations and the consequences for spread of resistance and virulence determinants.