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dc.contributor.authorBurge, Dylan O.
dc.contributor.authorMugford, Kaila
dc.contributor.authorHastings, Amy P.
dc.contributor.authorAgrawal, Anurag A.
dc.date.accessioned2019-08-02T13:06:52Z
dc.date.available2019-08-02T13:06:52Z
dc.date.issued2013-04-23
dc.identifier.urihttps://hdl.handle.net/1813/66766
dc.description.abstractBackground. The genus Pachypodium contains 21 species of succulent, generally spinescent shrubs and trees found in southern Africa and Madagascar. Pachypodium has diversified mostly into arid and semi-arid habitats of Madagascar, and has been cited as an example of a plant group that links the highly diverse arid-adapted floras of Africa and Madagascar. However, a lack of knowledge about phylogenetic relationships within the genus has prevented testing of this and other hypotheses about the group. Methodology/Principal Findings. We use DNA sequence data from the nuclear ribosomal ITS and chloroplast trnL-F region for all 21 Pachypodium species to reconstruct evolutionary relationships within the genus. We compare phylogenetic results to previous taxonomic classifications and geography. Results support three infrageneric taxa from the most recent classification of Pachypodium, and suggest that a group of African species (P. namaquanum, P. succulentum and P. bispinosum) may deserve taxonomic recognition as an infrageneric taxon. However, our results do not resolve relationships among major African and Malagasy lineages of the genus. Conclusions/Significance. We present the first molecular phylogenetic analysis of Pachypodium. Our work has revealed five distinct lineages, most of which correspond to groups recognized in past taxonomic classifications. Our work also suggests that there is a complex biogeographic relationship between Pachypodium of Africa and Madagascar.
dc.description.sponsorshipFunding for this research was provided by a grant from the Cactus and Succulent Society of America to Dylan Burge, and a grant from the National Science Foundation (DEB 1118783) to Anurag Agrawal.
dc.language.isoen_US
dc.publisherPeerJ
dc.relation.ispartofseriesPeerJ
dc.relation.hasversionBurge DO, Mugford K, Hastings AP, Agrawal AA. 2013. Phylogeny of the plant genus Pachypodium (Apocynaceae) PeerJ 1:e70
dc.subjectPachypodium
dc.subjectApocynaceae
dc.subjectBiogeography
dc.subjectMadagascar
dc.subjectphylogeny
dc.subjectAfrica
dc.subjectITS
dc.subjecttrnL-F
dc.subjectFlower color
dc.subjectTaxonomy
dc.titlePhylogeny of the plant genus Pachypodium (Apocynaceae)
dc.typearticle
dcterms.licensehttps://hdl.handle.net/1813/60291
dc.relation.doihttps://doi.org/10.7717/peerj.70


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