Uncovering the genomic basis of symbiotic interactions and niche adaptations in freshwater picocyanobacteria.

ABSTRACT:

Background

Picocyanobacteria from the genera Prochlorococcus, Synechococcus, and Cyanobium are the most widespread photosynthetic organisms in aquatic ecosystems. However, their freshwater populations remain poorly explored, due to uneven and insufficient sampling across diverse inland waterbodies.

Results

In this study, we present 170 high-quality genomes of freshwater picocyanobacteria from non-axenic cultures collected across Central Europe. In addition, we recovered 33 genomes of their potential symbiotic partners affiliated with four genera, Pseudomonas, Mesorhizobium, Acidovorax, and Hydrogenophaga. The genomic basis of symbiotic interactions involved heterotrophs benefiting from picocyanobacteria-derived nutrients while providing detoxification of ROS. The global abun

SUBMITTER: Park H 

PROVIDER: S-EPMC11316352 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature