Phylogenetic relationships in the Gesnerioideae (Gesneriaceae) based on nrDNA ITS and cpDNA trnL‐F and trnE‐T spacer region sequences

Elizabeth A Zimmer; Eric H Roalson; Laurence E Skog; John K Boggan; Alexander Idnurm

doi:10.3732/ajb.89.2.296

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Phylogenetic relationships in the Gesnerioideae (Gesneriaceae) based on nrDNA ITS and cpDNA trnL‐F and trnE‐T spacer region sequences

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Phylogenetic relationships in the Gesnerioideae (Gesneriaceae) based on nrDNA ITS and cpDNA trnL‐F and trnE‐T spacer region sequences

Elizabeth A Zimmer, Eric H Roalson, Laurence E Skog, John K Boggan and Alexander Idnurm

American journal of botany, Vol.89(2), pp.296-311

02/2002

DOI: https://doi.org/10.3732/ajb.89.2.296

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https://hdl.handle.net/2376/112599

PMCID: PMC7159457

PMID: 21669739

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Abstract

Gesneriaceae

ITS

trnL‐F

trnE‐T

Gesnerioideae

molecular phylogenetics

The Gesnerioideae includes most of the New World members of the Gesneriaceae family and is currently considered to include five tribes: Beslerieae, Episcieae, Gesnerieae, Gloxinieae, and Napeantheae. This study presents maximum parsimony and maximum likelihood phylogenetic analyses of nuclear ribosomal DNA internal transcribed spacer regions (ITS), and the chloroplast DNA trnL intron, trnL‐trnF intergenic spacer region, and trnE‐trnT intergenic spacer region sequences. The ITS and cpDNA data sets strongly support the monophyly of a Beslerieae/Napeantheae clade; an Episcieae clade; a Gesnerieae clade; a Gloxinieae clade minus Sinningia, Sinningia relatives, and Gloxinia sarmentiana; and a Sinningia/Paliavana/Vanhouttea clade. This is the first study to provide strong statistical support for these tribes/clades. These analyses suggest that Sinningia and relatives should be considered as a separate tribe. Additionally, generic relationships are explored, including the apparent polyphyly of Gloxinia. Chromosome number changes are minimized on the proposed phylogeny, with the exception of the n = 11 taxa of the Gloxinieae. Scaly rhizomes appear to have been derived once in the Gloxinieae sensu stricto. The number of derivations of the inferior ovary is unclear: either there was one derivation with a reversal to a superior ovary in the Episcieae, or there were multiple independent derivations of the inferior ovary.

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Title: Phylogenetic relationships in the Gesnerioideae (Gesneriaceae) based on nrDNA ITS and cpDNA trnL‐F and trnE‐T spacer region sequences
Creators: Elizabeth A Zimmer
Eric H Roalson
Laurence E Skog
John K Boggan
Alexander Idnurm
Publication Details: American journal of botany, Vol.89(2), pp.296-311
Academic Unit: Biological Sciences, School of
Publisher: Botanical Society of America
Number of pages: 16
Grant note: Smithsonian Institution Laboratory of Molecular Systematics
Identifiers: 99900547894701842
Language: English
Resource Type: Journal article