Metal-independent effects of calprotectin on cocultures of Pseudomonas aeruginosa and Staphylococcus aureus involve alkylquinolone production

This study demonstrates that the innate immune protein calprotectin influences polymicrobial interactions between *Pseudomonas aeruginosa* and *Staphylococcus aureus* through a metal-independent mechanism where its protein scaffold modulates alkylquinolone production, thereby altering cell envelope gene expression and interspecies dynamics.

Lee, W. H., Tobin, N. H., G. Oglesby, A. + 1 more2026-04-08🦠 microbiology

Easy-to-use whole-genome sequencing workflows and standardized practices to uncover hidden genetic variation in Synechocystis PCC 6803 wild-type and knock-out strains

This paper addresses the challenges of genetic heterogeneity and incomplete segregation in *Synechocystis* PCC 6803 knock-out studies by developing standardized whole-genome sequencing workflows and proposing a practical guide to ensure robust, reproducible phenotypic characterization through routine strain validation and increased use of complementation controls.

Theune, M., Fritsche, R., Kueppers, N. + 8 more2026-04-08🦠 microbiology

Mitochondrion-IMC contact sites are critical for cofactor biosynthesis and egress signaling in Toxoplasma gondii

This study demonstrates that the LMF1-IMC10-mediated contact site between the mitochondrion and inner membrane complex in *Toxoplasma gondii* is essential for maintaining proper mitochondrial morphology, regulating egress signaling via calcium homeostasis, and enabling the biosynthesis of critical cofactors like tetrahydrofolate and coenzyme A.

Souza, R., Thibodeau, K., Jacobs, K. + 3 more2026-04-08🦠 microbiology

Comparative analysis of varicella-zoster virus and herpes simplex virus 1 interaction with epidermal terminal differentiation in primary human keratinocytes models of differentiation

This study utilizes primary human keratinocyte differentiation models to demonstrate that while both VZV and HSV-1 replication are restricted in differentiated cells, VZV uniquely downregulates differentiation markers like K10 prior to replication, whereas HSV-1 requires full viral replication to achieve the same effect.

Tommasi, C., Kim, G., Liu, A. + 5 more2026-04-08🦠 microbiology

Long-read sequencing of Mycobacterial tuberculosis is comparable to short-read sequencing for antimicrobial resistance prediction and epidemiological studies.

This study demonstrates that Oxford Nanopore long-read sequencing achieves comparable accuracy to Illumina short-read sequencing for *Mycobacterium tuberculosis* lineage assignment, antimicrobial resistance prediction, and outbreak detection, thereby validating the aggregation of data from both platforms for large-scale public health surveillance.

Colpus, M., Baker, C. S., Roghi, E. + 16 more2026-04-08🦠 microbiology

Unveiling a missing component of the atypical type IV secretion system required for natural transformation of Helicobacter pylori

This study identifies HP1421, a hexameric VirB11-family ATPase encoded by a gene outside the *comB* operon, as an essential missing component (proposed as ComB11) of the *Helicobacter pylori* ComB type IV secretion system that is required for the uptake of transforming DNA into the periplasm during natural transformation.

Villa, J. F., Kondekar, S., Fauconnet, Y. + 7 more2026-04-07🦠 microbiology

Complex microbial consortia improve yield and physiological performance of leafy greens under deficit irrigation

This study demonstrates that applying complex, functionally diverse microbial consortia to lettuce and spinach significantly mitigates the negative impacts of 30% deficit irrigation by improving yield, accelerating harvest, and enhancing physiological resilience, thereby offering a scalable biological strategy to sustain agricultural productivity under water scarcity.

Edlund, A., Espinoza, J. L., Basu, S. S. + 4 more2026-04-07🦠 microbiology

The anaerobic fungus Caecomyces churrovis produces H2 via a non-bifurcating NADH-dependent enzyme complex

This study reveals that the anaerobic fungus *Caecomyces churrovis* produces hydrogen via a newly identified non-bifurcating NADH-dependent enzyme complex formed by [FeFe] hydrogenase and NADH dehydrogenase subunits, a mechanism distinct from the ferredoxin-dependent pathways previously assumed and likely shared across anaerobic fungi.

Zhang, B., Hrdy, I., Tachezy, J. + 7 more2026-04-07🦠 microbiology

The fatty acid synthesis pathway is a checkpoint for lipoteichoic acid synthesis in Staphylococcus aureus

This study reveals that in *Staphylococcus aureus*, the fatty acid synthesis (FASII) pathway acts as a critical checkpoint for lipoteichoic acid production by regulating intracellular glycerophosphate availability, thereby determining whether phosphatidylglycerol flux is directed toward essential LTA synthesis or alternative non-glycerophosphate lipids.

Wongdontree, P., Louche, C., Dairou, J. + 9 more2026-04-07🦠 microbiology