# Metagenome-assembled genomes from oxygenic photogranules obtained from photobioreactors treating synthetic wastewater

**Authors:** Oriane Della-Negra, Rémi Servien, Kim Milferstedt, Jérôme Hamelin, Christophe Klopp, Claire Hoede

PMC · DOI: 10.1128/mra.01310-25 · 2026-02-04

## TL;DR

Scientists identified 25 high-quality genomes from photogranules used to treat wastewater, dominated by a cyanobacterium and supporting nitrogen and oxygen cycling.

## Contribution

Recovery and analysis of 25 MAGs from photogranules reveals key metabolic roles in wastewater treatment.

## Key findings

- Twenty-five high-quality MAGs were recovered from photogranules.
- Cyanobacterial MAGs encoded photosynthesis and nitrogen fixation pathways.
- Heterotrophic MAGs contributed to nitrogen removal in wastewater treatment.

## Abstract

Twenty-five high-quality metagenome-assembled genomes (MAGs) were recovered from photogranules to treat synthetic wastewater. They were dominated by Leptolyngbya boryana. Cyanobacterial MAGs encoded photosynthesis and nitrogen fixation pathways, supporting internal oxygen and nitrogen cycling. Most heterotrophic MAGs contributed to nitrogen removal, highlighting the metabolic complementarity within photogranules studied for wastewater treatment.

## Linked entities

- **Species:** Leptolyngbya boryana (taxon 1184)

## Full-text entities

- **Chemicals:** nitrogen (MESH:D009584), oxygen (MESH:D010100)
- **Species:** Leptolyngbya boryana (species) [taxon 1184]

## Figures

1 figure with captions in the complete paper: https://tomesphere.com/paper/PMC12981114/full.md

---
Source: https://tomesphere.com/paper/PMC12981114