Publications by authors named "Anna Szalay"
Cable bacteria (CB) perform electrogenic sulfur oxidation (e-SOx) by spatially separating redox half reactions over centimetre distances. For freshwater systems, the ecology of CB is not yet well understood, partly because they proved difficult to cultivate. This study introduces a new 'agar pillar' approach to selectively enrich and investigate CB populations.
View Article and Find Full Text PDFThe availability of oxygen is often a limiting factor for the degradation of aromatic hydrocarbons in subsurface environments. However, while both aerobic and anaerobic degraders have been intensively studied, degradation betwixt, under micro- or hypoxic conditions has rarely been addressed. It is speculated that in environments with limited, but sustained oxygen supply, such as in the vicinity of groundwater monitoring wells, hypoxic degradation may take place.
View Article and Find Full Text PDFArticle Synopsis
- Recent research suggests that some bacteria can convert nitric oxide (NO) into nitrogen (N) and oxygen (O) through a process called oxygenic dismutation, potentially leading to new pathways in the microbial nitrogen cycle.
- The study revealed a surprising diversity and high abundance of nod genes, which are involved in this process, across various contaminated water systems, indicating that this physiological capability may not be limited to the known bacteria "Candidatus Methylomirabilis oxyfera" and HdN1.
- The presence of nod genes in significant quantities (up to 10% of total bacterial gene counts) implies that nitric oxide dismutation might be more widespread in nature than previously thought, and understanding this could enhance strategies for nitrogen