Gene Duplication Impacts on RNS Evolution in Legumes

This dataset analyzes gene duplications within the evolution of root nodule symbiosis (RNS) across legumes. It focuses on identifying gene superfamilies expanded by independent whole-genome duplications (WGDs) occurring after the ancient gamma event but before the emergence of RNS in the nitrogen-fixing clade. The data aims to resolve the puzzle of RNS origin long after the gamma polyploidy event.

Use Cases

• Phylogenetic analysis of gene family expansion in RNS-related pathways.
• Identifying candidate genes gained via recent WGDs for functional characterization.
• Dating independent WGD events within the rosid phylogeny using gene trees.

Strengths

• Focuses on a specific evolutionary puzzle (RNS origin post-gamma WGD).
• Identifies gene superfamilies expanded by independent, lineage-specific WGDs.
• Provides a comparative framework across approximately 13,000 legume species.

Limitations

• Dataset size is small (83 KB PDF), likely a summary/publication rather than raw genomic data.
• Column-level metadata and file formats (beyond PDF) are unspecified.
• Data freshness depends on the publication date (2026-05-12); underlying analyses may use older genomic assemblies.

Provenance

Source

figshare repository (author: Hyunmin Lee).

Collection Method

Comparative genomic analysis of gene families and WGD history across legume genomes.

Time Range

Evolutionary timescale (millions of years), focusing on post-gamma WGD events.