Phylogenomic conflict and reticulate evolution during radiative diversification of the genus Rheum

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This research investigates the evolutionary processes leading to morphological diversity in the genus Rheum.
Phylogenomic approach integrating nuclear and plastid gene data from 64 samples across 31 species.
Phylogenetic reconstruction, network analyses, and ancestral state reconstruction of morphological traits.
Identification of processes like incomplete lineage sorting and hybridization affecting phylogenetic relationships.
Detected cytonuclear discordance, influenced by incomplete lineage sorting and hybridization.
Revealed multiple independent origins of dwarfism and specialized 'greenhouse' bracts through ancestral state reconstruction.
Highlighted ecological adaptation as a driving factor behind convergent evolution of these traits.

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Explores evolutionary mechanisms in Rheum's diversification, suggesting ecological adaptation drives phenotypic traits.

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Yang et al. (2026) studied this question.

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