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Revisiting the phylogeny of Dipsacales: New insights from phylogenomic analyses of complete plastomic sequences
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2019 (English)In: Journal of Systematics and Evolution, ISSN 1674-4918, E-ISSN 1759-6831Article in journal (Refereed) Published
Abstract [en]

Phylogenetic relationships in Dipsacales have long been a major challenge. Although considerable progress has been made during the past two decades, questions remain; the uncertain systematic positions of HeptacodiumTriplostegia, and Zabelia, in particular, impede our understanding of Dipsacales evolution. Here we use 75 complete plastomic sequences to reconstruct the phylogeny of Dipsacales, of which 28 were newly generated. Two primary clades were recovered that form the phylogenetic backbone of Dipsacales. Seven of the primary clades correspond to the recognized families Adoxaceae, Caprifoliaceae s. str., Diervillaceae, Dipsacaceae, Linnaeaceae, Morinaceae, and Valerianaceae, and one corresponds to Zabelia, which was found to be the closest relative of Morinaceae in all analyses. Additionally, our results, with greatly increased confidence in most branches, show that Heptacodium and Triplostegia are members of Caprifoliaceae s. str. and Dipsacaceae, respectively. The results of our study indicate that the complete plastomic sequences provide a fully‐resolved and well‐supported representation of the phylogenetic relationships within Dipsacales.

Place, publisher, year, edition, pages
2019.
Keywords [en]
Adoxaceae, Caprifoliaceae, Heptacodium, Morinaceae, Triplostegia, Zabelia
National Category
Natural Sciences Botany
Identifiers
URN: urn:nbn:se:uu:diva-401802DOI: 10.1111/jse.12526OAI: oai:DiVA.org:uu-401802DiVA, id: diva2:1383906
Available from: 2020-01-09 Created: 2020-01-09 Last updated: 2020-02-05Bibliographically approved

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Backlund, Anders

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