M. Chavarria

Production of selenium nanoparticles occurs through an interconnected pathway of sulfur metabolism and oxidative stress response in Pseudomonas putida KT2440

This study identifies the molecular pathway in Pseudomonas putida KT2440 for selenite reduction to selenium nanoparticles, linking sulfur metabolism and oxidative stress response.

Fungi with history: Unveiling the mycobiota of historic documents of Costa Rica

This study identifies fungal isolates from historic Costa Rican documents, linking fungal diversity to paper composition and degradation potential.

Antibiotic-producing Micrococcales govern the microbiome that inhabits the fur of two- and three-toed sloths

The paper identifies antibiotic-producing Micrococcales bacteria in sloth fur microbiomes that may control microbial populations through various secondary metabolites.

Out of the blue: the independent activity of sulfur-oxidizers and diatoms mediate the sudden color shift of a tropical river

The paper investigates the microbial and chemical processes in Rio Celeste, revealing that sulfur-oxidizers and diatoms drive the formation of light-scattering particles responsible for the river's sky-blue color.

Redox stress reshapes carbon fluxes of Pseudomonas putida for cytosolic glucose oxidation and NADPH generation

This study investigates how oxidative stress in Pseudomonas putida reconfigures carbon fluxes to enhance NADPH production and support redox stress responses.

Rapid shift in microbial community structure in a neutral hydrothermal hot spring from Costa Rica

The paper characterizes the microbial community and geochemistry of a neutral hot spring, showing a rapid shift from sulfur-related chemoautotrophs to chemoheterotrophs downstream.

Temperature and elemental sulfur shape microbial communities in two extremely acidic aquatic volcanic environments

The paper analyzes microbial communities in two acidic volcanic environments, finding that temperature and elemental sulfur drive differences in community composition between them.

C1 compounds shape the microbial community of an abandoned century-old oil exploration well.

The paper analyzes microbial communities in an abandoned oil well, identifying hydrocarbon-degrading bacteria and methane oxidation capabilities.

The putative phosphate transporter PitB (PP1373) is involved in tellurite uptake in Pseudomonas putida KT2440

This study shows that PitB in Pseudomonas putida KT2440 is involved in tellurite uptake, as a pitB knockout strain showed increased resistance and greater tellurite reduction capacity.

Untapped microbial composition along a horizontal oxygen gradient in a Costa Rican volcanic influenced acid rock drainage system

The paper analyzes microbial community shifts along an oxygen gradient in a volcanic acid rock drainage system using 16S rRNA gene metabarcoding.