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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...

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Related Experiment Video

Updated: Oct 10, 2025

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

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Published on: July 11, 2025

Repeatome-Based Phylogenetics in Pelargonium Section Ciconium (Sweet) Harvey.

Floris C Breman¹, Guangnan Chen¹, Ronald C Snijder²

¹Biosystematics Group, Wageningen University & Research, Netherlands.

Genome Biology and Evolution

|December 11, 2021

Summary

Repetitive DNA sequences in Pelargonium genomes reveal evolutionary relationships. Repeat profiles confirmed existing phylogenetic hypotheses and identified new species groups, aiding evolutionary studies.

Keywords:

Pelargonium evolution phylogeny repeatome speciation

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Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Published on: August 14, 2018

Area of Science:

Plant evolutionary biology
Genomics
Phylogenetics

Background:

The plant genome's repetitive regions (repeatome) hold valuable phylogenetic information.
Pelargonium section Ciconium is a suitable model for studying evolutionary relationships using repeat data.

Purpose of the Study:

To analyze repeat abundancy and similarity in Pelargonium section Ciconium.
To construct repeat profiles for phylogenetic analyses.
To test evolutionary hypotheses and resolve phylogenetic relationships within Pelargonium.

Main Methods:

Genome skimming data generation for 19 Pelargonium accessions.
Analysis of repeat abundancy and similarity to create repeat profiles.
Phylogenetic analyses using repeat profile data.

Main Results:

Phylogenetic trees from repeat similarity largely agreed with morphological and chloroplast data.
Identified a
Core Ciconium
group, supported by unique repeats.
Discovered four species groups within P. sect. Ciconium, reinforcing plastome-based findings.
Detected a repeat expansion in a subclade with Southern to Eastern Africa/Arabian Peninsula dispersal.
Speculated a Whole Genome Duplication (WGD) event correlating with the Core Ciconium repeat set.

Conclusions:

Repetitive DNA analysis is effective for resolving Pelargonium phylogenetics.
Repeat profiles confirm established evolutionary hypotheses and identify new groupings.
Findings support dispersal hypotheses and suggest a potential WGD event in Pelargonium evolution.