Related Experiment Video
Updated: Nov 20, 2025

Compost Microcosms as Microbially Diverse, Natural-like Environments for Microbiome Research in Caenorhabditis elegans
Published on: September 13, 2022
Evaluation of nitrogen conversion pathway during composting under amoxicillin stress: Mainly driven by core microbial
Fangyi Pei1, Hao Ding1, Ziliang Yin1
1Key Laboratory of Microbiology, College of Life Sciences, Heilongjiang University, Harbin 150080, China.
Abstract:
The aim of this study was to explore the effects of different concentrations of amoxicillin (AMX) on nitrogen (N) conversion and bacterial community structure during aerobic composting. The results revealed that AMX led to a lower temperature and increased pH during the thermophilic phase of composting. AMX inhibited the relative abundance (RA) of Firmicutes at the initial phase but increased the RA of Actinobacteria and Bacteroidetes compared with the control treatment. The core bacterial community linked to N conversion was determined by network analysis. AMX decreased the RA of amoA, a gene related to nitrification, and increased the RAs of nirK and nosZ, which are related to denitrification. Meanwhile, AMX inhibited the activity of ammonia-oxidizing bacteria but promoted the activity of denitrifying bacteria. Therefore, the main adverse effect of AMX on compost quality is to change the microbial community structure and affect the physical and chemical properties of composting.
More Related Videos
Related Concept Videos
Overview of Nitrogen Metabolism
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
Inorganic Nitrogen Assimilation
Metabolism of Chemolithotrophs
The Nitrogen Cycle
Environmental Applications of Microorganisms
Other Stress Responses in Bacteria

