Michael Wagner

Thermal stress disrupts microbial symbiosis and host activity in the model sponge Ianthella basta

This study examines how thermal stress affects microbial symbiosis and host activity in the sponge Ianthella basta, showing tissue regression, symbiont loss, and microbial shifts under elevated temperatures.

A Saccharimonadia epibiont interacts with the polyphosphate-accumulating bacterium Candidatus Phosphoribacter in wastewater treatment plants

The paper identifies a novel Saccharimonadia genus associated with a polyphosphate-accumulating bacterium in wastewater treatment plants and explores their ecological and metabolic interactions.

Revised 16S rRNA V4 hypervariable region targeting primers enhance detection of Patescibacteria and other lineages across diverse environments

The paper introduces improved 16S rRNA V4 primers that enhance detection of underrepresented microbial lineages across diverse environments.

Kinetic Plasticity of Nitrite-Oxidizing Bacteria Containing Cytoplasmic Nitrite Oxidoreductase

This study shows that Nitrobacter can adjust its nitrite affinity based on nitrite concentration and pH, demonstrating adaptive plasticity in cNXR NOB.

Acidotolerant soil nitrite oxidiser 'Candidatus Nitrobacter laanbroekii' NHB1 alleviates constraints on growth of acidophilic soil ammonia oxidisers

This study characterizes the growth of Nitrobacter strain NHB1 under acidic conditions and shows its role in enhancing ammonia oxidation by acidophilic archaea in co-culture.

Microflora Danica: the atlas of Danish environmental microbiomes

Microflora Danica compiles 10,686 shotgun metagenomes and 449 rRNA datasets to create an atlas of Danish environmental microbiomes, revealing hidden homogeneity and novel nitrifiers.

Elevated Temperatures Representing Heatwave Conditions Shift Active Nitrifying Communities and Their Viruses in Tidal Flats and Agricultural Soils

This study shows heatwave conditions alter active nitrifying communities and their viruses in tidal flats and agricultural soils, affecting nutrient cycling.

Contribution of ammonia oxidizers to inorganic carbon fixation in the dark ocean

This study shows that ammonia oxidizers contribute only a small fraction to dark ocean DIC fixation, challenging the assumption that nitrification primarily sustains carbon fixation in the deep ocean.

Branched-chain amino acid assimilation promotes mixotrophy of ammonia-oxidizing archaeal sponge symbionts

This study shows sponge-associated ammonia-oxidizing archaea use branched-chain amino acids as a carbon and nitrogen source, revealing a mixotrophic lifestyle and a new nutritional interaction in sponge holobionts.

Hypoosmolarity inhibits archaeal ammonia oxidation

This study shows hypoosmolarity inhibits archaeal ammonia oxidation while promoting bacterial ammonia oxidation in different environments.

Cyanate - a low abundant but actively cycled nitrogen compound in soil

Cyanate is a small but continuously available nitrogen source for soil microbes, contributing to a selective advantage of microorganisms capable of direct cyanate utilization.