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Riding the vagus train to the brain...

March 12, 2026

Riding the vagus train to the brain...

Recent studies link gut dysbiosis to neurological disease, but the underlying mechanisms remain unclear. Manoj Thapa, David Weiss, Arash Grakoui and colleagues show that a high-fat diet increases gut permeability and enables bacterial translocation from the gut to the brain via the vagus nerve in mice.

Image credit: pbio.3003652

PLOS Biologue

Community blog for PLOS Biology, PLOS Genetics and PLOS Computational Biology.

PLOS BIOLOGUE

03/13/2026

Research Article

Dysbiosis metabolites hijack a quorum-sensing receptor

Microbial dysbiosis alters chemical cues in the oral microbiome, but how commensals sense these changes is unclear. Guillaume Cerckel, Pascal Hols and co-workers find that Streptococcus salivarius detects dysbiosis metabolites and repurposes a peptide quorum-sensing receptor to drive sustained antibacterial predation, revealing a new form of interspecies chemical communication.

Image credit: pbio.3003718

Dysbiosis metabolites hijack a quorum-sensing receptor

Recently Published Articles

Current Issue

Current Issue February 2026

03/12/2026

Research Article

Sound processing in the auditory thalamus

The medial geniculate body in the auditory thalamus is an important early node in sound processing, but the roles of different neuron types in this brain region are not clear. This study in mice, Solymar Rolón-Martínez, Austin Mendoza, Julie Haas, Maria Geffen and co-authors, characterizes two key inhibitory neuron types, revealing their distinct connectivity and effects on sound processing.

Image credit: pbio.3003693

Sound processing in the auditory thalamus

03/12/2026

Research Article

How stress makes you lose your way

Stress impacts navigational performance and involves cortisol release, but how cortisol impacts brain functions supporting navigation remains unclear. This study in men, by Osman Akan, Christian Merz and colleagues, shows that cortisol administration impairs path integration, a specific navigational process, and reduces grid-like brain activity patterns in the entorhinal cortex, offering new insights into the effects of stress on navigation.

Image credit: pbio.3003661

How stress makes you lose your way

03/10/2026

Preregistered Research Article

Effect of parental age and inbreeding on fitness

Parental age and inbreeding have substantial fitness effects in animals both in nature and lab conditions, and can change with temperature, but how these factors affect fitness in insects remain unclear. This pre-registered study, by Tom Tregenza, Jelle Boonekamp and co-workers, explores whether inbreeding and parental age have ecologically significant effects on wild cricket fitness.

Effect of parental age and inbreeding on fitness

Image credit: WildCrickets.org

03/10/2026

Research Article

Clues from a backboned phylogeny

Could the shape of phylogenetic trees contain hidden information? Siqi Liu, Sarah Svensson and Daniel Falush show that the "backboned" shape of the phylogenetic tree of the important human pathogen Klebsiella pneumoniae may reveal a history of diversifying selection on an unknown trait.

Clues from a backboned phylogeny

Image credit: pbio.3003672

03/10/2026

Short Reports

Evolution of the silkworm's caudal horn

Closely related species often exhibit distinct morphologies. Kenta Tomihara, Ana Pinharanda, Takashi Kiuchi, Peter Andolfatto and co-authors uncover the genetic basis of caudal horn size differences between the domesticated silk moth and its wild relative, revealing cis-regulatory changes in Wnt genes as key drivers of morphological evolution without widespread deleterious effects.

Evolution of the silkworm's caudal horn

Image credit: pbio.3003605

03/10/2026

Consensus View

Invasive species and EEICAT

This Consensus View introduces EEICAT, a framework for assessing how biological invasions affect species, ecosystems and the environment, to help scientists and managers compare and address invasion-driven changes.

Invasive species and EEICAT

Image credit: Laís Carneiro

03/03/2026

Perspective

Measles, monoclonal antibodies and pathogen evolution

Monoclonal antibody therapies are being developed to treat recent measles resurgence. This Perspective argues that such therapies risk driving measles virus evolution in ways that could override the protection offered by vaccination.


Measles, monoclonal antibodies and pathogen evolution

Image credit: Wikimedia Com. user Ooligan

03/03/2026

Perspective

Deep learning solutions

Creating generalizable models is a conserved aim in deep learning; however, misleading claims of transferability threaten to obfuscate reliable performance evaluation. This Perspective article outlines the severity of this issue in the biosciences, and suggests potential solutions.

Deep learning solutions

Image credit: Wikimedia Com. user Lollixzc

03/02/2026

Essay

Urban behavioral convergence

Anthropogenic change can lead to behavioral homogenization, the human-driven convergence of behavioral traits across individuals, populations, and species, often in urban environments. This Essay describes these changes and discusses their ecological and evolutionary consequences.


Urban behavioral convergence

Image credit: pbio.3003689

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PLOS Biology | ISSN: 1545-7885 (online)