Phylogenetic Analysis of Ranunculaceae Genus Relationships

The buttercup family (Ranunculaceae) encompasses over 2,500 species across more than 60 genera, presenting a rich tapestry of morphological diversity and ecological adaptations. Phylogenetic analysis has advanced from single‐gene markers to genome‐scale datasets, integrating complete plastid genomes, nuclear ribosomal DNA, low‐copy nuclear loci and transcriptomes. Comparative plastome studies reveal conserved quadripartite structures punctuated by lineage‐specific inversions, gene losses and shifts in inverted repeat boundaries. Nuclear data have clarified relationships obscured by chloroplast capture and hybridisation. Bayesian and maximum likelihood frameworks, often coupled with molecular‐clock dating and ancestral‐range reconstruction, have resolved deep splits among subfamilies and supported the monophyly of key genera. These phylogenies underpin revised classifications, inform biogeographical histories from mid‐Cretaceous forest origins to Pleistocene radiations, and guide conservation of endemic and threatened taxa. By illuminating genus‐level relationships, phylogenetic research provides a scaffold for exploring character evolution, ecological diversification and the genetic basis of medicinal and ornamental traits within this globally significant plant family.

Research from Nature Portfolio

Recent studies have generated complete plastomes for an endemic Adonis lineage, uncovering a large‐scale inversion of approximately 44.8 kb, loss of the rpl32 gene and contractions in intergenic regions. These structural mutations distinguish Adonis from other Adonideae genera and, when placed in a phylogenomic context, indicate that the genus diverged early within the tribe. Another analysis examined plastid genomes of two subspecies within a small perennial genus, revealing extensive expansion and contraction of inverted repeat regions, distinct gene content between subspecies and conserved synteny across related taxa. Partitioned plastome phylogenies resolved that genus as sister to Caltha and clarified its position in subfamily Ranunculoideae, refining our understanding of early divergences in the family.

Phylogenetic Analysis of Ranunculaceae Genus Relationships publication trend

The graph below shows the total number of articles in phylogenetic analysis of ranunculaceae genus relationships across all publications each year (not limited to Nature Index journals).

Technical terms

Plastome: The complete DNA sequence of a chloroplast, used as a high‐resolution marker in plant phylogenetics.

Inverted repeat (IR): Two identical sequences in reverse orientation within the plastome that flank single‐copy regions.

Monophyletic: A group comprising an ancestor and all its descendants, indicating a single evolutionary origin.

Phylogenomics: The reconstruction of evolutionary relationships using genome‐scale data rather than single or few genes.

Hypervariable loci: Genomic regions exhibiting high sequence divergence, valuable for distinguishing closely related taxa.

References

1. Insight into chloroplast genome structural variation of the Mongolian endemic species Adonis mongolica (Ranunculaceae) in the Adonideae tribe. Scientific Reports (2023).
2. Structural variation of the complete chloroplast genome and plastid phylogenomics of the genus Asteropyrum (Ranunculaceae). Scientific Reports (2019).
3. Phylogeny and Historical Biogeography of the East Asian Clematis Group, Sect. Tubulosae, Inferred from Phylogenomic Data. International Journal of Molecular Sciences (2023).
4. Comparative plastome genomics and phylogenetic relationships of the genus Trollius. Frontiers in Plant Science (2023).
5. Complete chloroplast genomes of eight Delphinium taxa (Ranunculaceae) endemic to Xinjiang, China: insights into genome structure, comparative analysis, and phylogenetic relationships. BMC Plant Biology (2024).