N2O production, a widespread trait in fungi

N2O production, a widespread trait in fungi

N2O is a powerful greenhouse gas contributing both to global warming and ozone depletion. While fungi have been identified as a putative source of N2O, little is known about their production of this greenhouse gas. Here we investigated the N2O-producing ability of a collection of 207 fungal isolates. Seventy strains producing N2O in pure culture were identified. They were mostly species from th...

N2O production by fungal denitrification in a semiarid soil

N2O production by heterotrophic N transformations in a semiarid soil

Emissions of N2O from soils of the Southwestern US are thought to result from the activity of anaerobic denitrifying bacteria, but the seasonal dryness and sandy texture of these soils are more conducive to the activities of aerobic microbes. Here, we present incubations of semiarid soils with added compounds known to stimulate the N-cycling processes ammonification (proteins, oligopeptides, an...

Bacteriocin production: a probiotic trait?

Bacteriocins are an abundant and diverse group of ribosomally synthesized antimicrobial peptides produced by bacteria and archaea. Traditionally, bacteriocin production has been considered an important trait in the selection of probiotic strains, but until recently, few studies have definitively demonstrated the impact of bacteriocin production on the ability of a strain to compete within compl...

Mechanisms of N2O production following chloropicrin fumigation

Soil fumigation has recently been shown to affect the greenhouse gas balance by increasing emissions of nitrous oxide (N2O) following chloropicrin (CP) application. However, the exactmechanisms of this increasewere not investigated. The purpose of this study was to elucidate potential mechanisms of CP-induced N2O production through laboratory incubations using chemical inhibitors (acetylene, an...