Evidence map›Paper›PMID 36149802›Full record

ArticleAnnals of botany2022

Phylogeny of the Madagascar-centred tribe Danaideae (Rubiaceae) as a precursor to taxonomic revision: insights into its generic and species limits, affinities and distribution.

Sylvain G Razafimandimbison, Niklas Wikström, Anbar Khodabandeh, Catarina Rydin

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Article in Annals of botany, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1 citing paper in PubMed.

  1. Qiancao (Frontiers in pharmacology · 2025
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5 · Who and what money

Authors and funding

4 authors.

Sylvain G RazafimandimbisonDepartment of Botany, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden.
Niklas WikströmDepartment of Ecology, Environment and Plant Sciences, Stockholm University, SE-106 91 Stockholm, Sweden.
Anbar KhodabandehDepartment of Ecology, Environment and Plant Sciences, Stockholm University, SE-106 91 Stockholm, Sweden.
Catarina RydinDepartment of Ecology, Environment and Plant Sciences, Stockholm University, SE-106 91 Stockholm, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsThe tribe Danaideae (Rubiaceae) is almost exclusively endemic to the Western Indian Ocean Region (WIOR), and encompasses the genera Danais, Payera and Schismatoclada that occur in humid, sub-humid and mountain and mountain bio climate zones. Much of the species diversity is endemic to restricted, remote and/or mountainous areas of Madagascar and recent field work on the island indicates substantial unknown diversity of the Danaideae. Furthermore, the monophyly of the Malagasy genera Payera and Schismatoclada has been questioned in previous work, species delimitations and phylogenetic relationships within the genera are poorly understood, and the distribution and evolution of gross morphological features have not been assessed.

methodsWe conducted morphological investigations, and produced robust phylogenies of Danaideae based on nuclear and plastid sequence data from 193 terminals. Ample plant material has been newly collected in the WIOR for the purpose of the present study, including potentially new species unknown to science. We performed Bayesian non-clock and relaxed-clock analyses employing three alternative clock models of a dataset with a dense sample of taxa from the entire geographical ranges of Danaideae. Based on the results, we discuss species diversity and distribution, relationships, and morphology in Danaideae. KEY

resultsOur results demonstrate the monophyly of Danaideae, its three genera and 42 species. Nine species are resolved as non-monophyletic. Many geographically distinct but morphologically heterogeneous lineages were identified, and morphological features traditionally considered diagnostic of subgroups of the genera, used for example in species identification keys, are not clade-specific.

conclusionsOur results demonstrate that Madagascar contains ample previously undocumented morphological and species diversity of Danaideae. Our novel approach to molecular phylogenetic analyses as a precursor to taxonomic revisions provides numerous benefits for the latter. There are tentative indications of parallel northward diversification in Payera and Schismatoclada on Madagascar, and of geographical phylogenetic clustering despite the anemochorous condition of Danaideae.

Indexed as

RubiaceaeBayes TheoremMadagascarPhylogenyPlastidsSequence Analysis, DNADanaideaeDanaisMadagascarmorphologyPayeraphylogenyRubiaceaeSchismatocladasystematicstaxonomyWestern Indian Ocean Region

Identifiers

PMID36149802
PMCPMC9758302

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