Phylogeny and Comparative Analysis

Phylogeny seeks to reconstruct the evolutionary relationships among organisms, genes or traits by interpreting patterns of shared ancestry. Comparative analysis uses those phylogenetic frameworks to test hypotheses about rates of speciation, the timing of divergence events, trait evolution and biogeographical history. Molecular sequence data—ranging from single loci to whole genomes—provide a rich source of characters whose variation can be aligned, modelled and analysed to infer branching patterns. Advances in target-capture and high-throughput sequencing now allow the assembly of thousands of orthologous loci or complete organellar genomes, yielding highly resolved trees across major clades. Integrative comparative methods then map ecological, morphological or genomic features onto the tree to detect shifts in character state, to reconstruct ancestral traits and to identify correlations between diversification rates and environmental change. Such approaches underpin the modern synthesis of systematics, enabling insights into co-evolution, adaptive radiation, the impact of past climate fluctuations and the genomic underpinnings of key innovations across the tree of life.

Research from Nature Portfolio

Large-scale phylogenomic sampling of butterflies—using nearly 400 protein-coding genes from over 2,200 species—has yielded a robust tree that resolves all major families and reveals that most tribes require taxonomic revision. Time-calibrated analyses date the origin of butterflies to around 100 Ma and trace their earliest larval host associations to Fabaceae in the Late Cretaceous, with subsequent dispersals across Beringia and rapid radiations in the Paleotropics. Innovative algorithmic methods have also emerged for “pandemic-scale” data sets, enabling the rapid reconstruction of phylogenies from tens of thousands of viral genomes; these approaches combine efficient heuristics with likelihood-based scoring to track pathogen spread in near real time. Another study has applied whole-genome sequencing to African bushpigs and closely related lineages, uncovering extensive historical gene flow, recent divergence times and incomplete speciation—challenging traditional species boundaries and offering a template for genomic monitoring of at-risk mammal populations.

Research from all publishers

Enhanced bait sets for ultraconserved elements (UCEs) have now enabled the recovery of over 2,000 loci per sample in ants and other Hymenoptera, producing a densely sampled phylogeny that clarifies long-standing taxonomic uncertainties and provides a foundation for studies of co-evolution and trait diversification. A methodological advance in host-specialist bees employed partitioned gene-tree searches and topology tests to resolve conflicting gene histories, demonstrating practical strategies for overcoming incongruence in genome-scale data. Pan-chloroplast genome analyses across 95 cultivars of Hibiscus syriacus have identified hundreds of single-nucleotide polymorphisms and indels, supporting the development of accession-specific markers for breeding and conservation. In the Gentianaceae, comparative plastome sequencing of six Tripterospermum species has uncovered highly conserved genome structures, divergence hotspots and lineage-defining gene losses, advancing our understanding of floral evolutionary dynamics and providing novel markers for phylogeography and taxonomy.

Phylogeny and Comparative Analysis publication trend

The graph below shows the total number of articles in phylogeny and comparative analysis across all publications each year (not limited to Nature Index journals).

Technical terms

Phylogenomics: Inference of evolutionary relationships using genome-scale data sets.

Ultraconserved element (UCE): A genomic locus with unusually high sequence identity across divergent taxa, used for targeted enrichment in phylogenomic studies.

Bootstrap value: A measure of support for a phylogenetic tree branch, estimated by resampling alignment columns and recomputing trees.

Target enrichment: Laboratory technique that isolates specific genomic regions (e.g., UCEs) for high-throughput sequencing.

Time-calibration: Assignment of absolute ages to phylogenetic nodes using fossil or molecular rate data.

Gene-tree incongruence: Conflict among individual gene phylogenies, which may arise from incomplete lineage sorting or gene flow.

References

1. A global phylogeny of butterflies reveals their evolutionary history, ancestral hosts and biogeographic origins. Nature Ecology & Evolution (2023).
2. Inferring phylogenies from pandemic-scale genome datasets. Nature Genetics (2023).
3. African bushpigs exhibit porous species boundaries and appeared in Madagascar concurrently with human arrival. Nature Communications (2024).
4. Enriching the ant tree of life: enhanced UCE bait set for genome‐scale phylogenetics of ants and other Hymenoptera. Methods in Ecology and Evolution (2017).
5. Partitioned Gene-Tree Analyses and Gene-Based Topology Testing Help Resolve Incongruence in a Phylogenomic Study of Host-Specialist Bees (Apidae: Eucerinae). Molecular Biology and Evolution (2020).
6. Pan-chloroplast genomes for accession-specific marker development in Hibiscus syriacus. Scientific Data (2024).
7. Comparative Analysis of Six Complete Plastomes of Tripterospermum spp.. International Journal of Molecular Sciences (2024).