F. J. Veyrier

Evolutionary insights into the emergence of virulent Leptospira spirochetes

This study identifies genetic and phenotypic traits associated with virulence in Leptospira by comparing environmental and pathogenic strains.

Pan-species transcriptomic analysis reveals a constitutive adaptation against oxidative stress for the highly virulent Leptospira species.

The paper introduces Annotator-RNAtor for pan-species transcriptomic analysis and applies it to study adaptation in Leptospira species, finding higher katE expression in virulent P1+ strains linked to oxidative stress tolerance.

Adaptive radioresistance of Enterohemorrhagic Escherichia coli O157:H7 results in genomic loss of shiga toxin-encoding prophages

This study shows that adaptive resistance of EHEC O157:H7 to gamma-irradiation involves loss of prophages encoding shiga toxins and mutations in specific genes, leading to reduced virulence and increased radioresistance.

The oxidative stress response of pathogenic Leptospira is controlled by two peroxide stress regulators which putatively cooperate in controlling virulence.

This study identifies and characterizes a second peroxide stress regulator, PerRB, in Leptospira, showing that PerRA and PerRB cooperatively regulate virulence through oxidative stress adaptation.

Bacterial glycocalyx integrity drives multicellular swarm biofilm dynamism

The paper shows that BPS secretion alters EPS glycocalyx stability, affecting cell motility and biofilm structure in M. xanthus.

Genome sequencing and functional characterization of a Dictyopanus pusillus fungal extract offers a promising alternative for lignocellulose pretreatment of oil palm residues

This study isolates and characterizes Dictyopanus pusillus, a fungus with laccase activity, for its potential in lignocellulose pretreatment of oil palm residues.