ArticleAnnals of botany2020
Radiation history of Asian Asarum (sect. Heterotropa, Aristolochiaceae) resolved using a phylogenomic approach based on double-digested RAD-seq data.
Article in Annals of botany, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Quaternary Radiation of Spring Ephemerals.Plant-environment interactions (Hoboken, N.J.) · 2025Article
- Diversity and host plant utilization of leaf-mining beetles of Chrysomeloidea (Coleoptera) in Japan.ZooKeys · 2025Article
- Molecular phylogeny and taxonomy of thePhytoKeys · 2022Article
- Integrative Study of Genotypic and Phenotypic Diversity in the Eurasian Orchid GenusFrontiers in plant science · 2021Article
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10 authors.
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Abstract
BACKGROUND AND
aimsThe genus Asarum sect. Heterotropa (Aristolochiaceae) probably experienced rapid diversification into 62 species centred on the Japanese Archipelago and Taiwan, providing an ideal model for studying island adaptive radiation. However, resolving the phylogeny of this plant group using Sanger sequencing-based approaches has been challenging. To uncover the radiation history of Heterotropa, we employed a phylogenomic approach using double-digested RAD-seq (ddRAD-seq) to yield a sufficient number of phylogenetic signals and compared its utility with that of the Sanger sequencing-based approach.
methodsWe first compared the performance of phylogenetic analysis based on the plastid matK and trnL-F regions and nuclear ribosomal internal transcribed spacer (nrITS), and phylogenomic analysis based on ddRAD-seq using a reduced set of the plant materials (83 plant accessions consisting of 50 species, one subspecies and six varieties). We also conducted more thorough phylogenomic analyses including the reconstruction of biogeographic history using comprehensive samples of 135 plant accessions consisting of 54 species, one subspecies, nine varieties of Heterotropa and six outgroup species. KEY
resultsPhylogenomic analyses of Heterotropa based on ddRAD-seq were superior to Sanger sequencing-based approaches and resulted in a fully resolved phylogenetic tree with strong support for 72.0-84.8 % (depending on the tree reconstruction methods) of the branches. We clarified the history of Heterotropa radiation and found that A. forbesii, the only deciduous Heterotropa species native to mainland China, is sister to the evergreen species (core Heterotropa) mostly distributed across the Japanese Archipelago and Taiwan.
conclusionsThe core Heterotropa group was divided into nine subclades, each of which had a narrow geographic distribution. Moreover, most estimated dispersal events (22 out of 24) were between adjacent areas, indicating that the range expansion has been geographically restricted throughout the radiation history. The findings enhance our understanding of the remarkable diversification of plant lineages in the Japanese Archipelago and Taiwan.
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