Phylogenomic Applications of Ultraconserved Elements

Ultraconserved elements (UCEs) are genomic loci that exhibit exceptionally high sequence identity across divergent taxa, reflecting deep evolutionary constraints. The use of UCEs in phylogenomics has revolutionised the reconstruction of evolutionary histories by enabling targeted enrichment and high-throughput sequencing of hundreds to thousands of loci from both model and non-model organisms. Enrichment of UCEs via custom bait sets followed by next-generation sequencing permits robust resolution of phylogenetic relationships over timescales ranging from recent radiations to ancient divergences. Applications span the Tree of Life, encompassing insects, fishes, birds and mammals, and extend to historical specimens held in museum collections. By integrating UCE data with morphological, ecological and biogeographical information, researchers have refined taxonomic delimitations, traced biotic responses to palaeoenvironmental changes and informed conservation priorities through elucidation of cryptic diversity and population structure. Advances in bioinformatics, including locus filtering, alignment partitioning and species-tree inference, continue to enhance analytical rigour. As a universally applicable tool, UCE-based phylogenomics underpins efforts in biodiversity assessment, comparative genomics and the study of evolutionary innovation on a global scale.

Research from Nature Portfolio

Recent studies have applied UCE-based phylogenomics to unravel the diversification and biogeographical history of key insect lineages. For instance, an analysis of a longhorn beetle genus associated with milkweed employed thousands of UCE loci alongside morphological and palaeontological data to reconstruct a time-calibrated phylogeny. This work traced the origin of the group to Central America in the Miocene, revealed multiple independent colonisations of North America, and linked diversification events to geological upheavals. By generating a densely sampled framework, these findings provide a platform for investigating coevolutionary dynamics and adaptive mechanisms in an ecologically emblematic system.

Phylogenomic Applications of Ultraconserved Elements publication trend

The graph below shows the total number of articles in phylogenomic applications of ultraconserved elements across all publications each year (not limited to Nature Index journals).

Technical terms

Ultraconserved element (UCE): A genomic region exhibiting near-identical sequence across divergent species, used as a phylogenomic marker.

Phylogenomics: The inference of evolutionary relationships using genome-scale data.

Target enrichment: A laboratory technique that isolates specific genomic regions for sequencing.

Bait set: A collection of synthetic probes designed to hybridise to target loci during enrichment.

Locus (pl. loci): A specific, defined location on a genome contributing to phylogenetic analysis.

References

1. Phylogenomics of Tetraopes longhorn beetles unravels their evolutionary history and biogeographic origins. Scientific Reports (2024).
2. 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).
3. Sequence Capture and Phylogenetic Utility of Genomic Ultraconserved Elements Obtained from Pinned Insect Specimens. PLOS ONE (2016).
4. A Phylogenomic Perspective on the Radiation of Ray-Finned Fishes Based upon Targeted Sequencing of Ultraconserved Elements (UCEs). PLOS ONE (2013).
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).