Rhizobium Quorum-Sensing Systems Across 142 Genomes

A study analyzing 142 complete Rhizobium genomes to understand the diversity and evolution of quorum-sensing systems. The research, authored by Ivana Blancas-Nava and last updated in April 2026, uses comparative genomics and phylogenetic reconstruction to examine the distribution of LuxI/LuxR homologs across chromosomes and plasmids. Findings indicate a heterogeneous distribution, with plasmid-encoded systems showing greater diversity and acting as major reservoirs for horizontal transfer.

Use Cases

• Phylogenetic analysis of LuxI/LuxR homologs based on sequence similarity and domain architecture mentioned in the description
• Comparative genomics to assess the distribution and genomic context of quorum-sensing systems across bacterial replicons
• Cophylogenetic analysis to investigate coevolution and partner recruitment between synthase and regulator pairs
• Studying the role of plasmids in the horizontal transfer and diversification of bacterial signaling systems

Strengths

• Analysis is based on 142 complete Rhizobium genomes, providing a substantial genomic sample.
• The study employs multiple methodologies: comparative genomics, phylogenetic reconstruction, and genomic context analysis.
• Findings detail specific acquisition events, supporting at least seven independent gains of chromosomal systems.

Limitations

• The primary data format is a PDF (3.8 MB), which may require extraction or manual inspection to access underlying data.
• Row count and column-level documentation for any underlying data are unknown.
• The dataset's freshness should be verified, as the last update date is in the future (2026-04-17).

Provenance

Source

figshare, author Ivana Blancas-Nava

Collection Method

Comparative genomics, phylogenetic reconstruction, and genomic context analysis of 142 complete Rhizobium genomes.

Freshness

Last updated 2026-04-17 05:21:57