Molecular phylogenetics of Lentibulariaceae inferred from plastid rps16 Intron and trnL-F DNA sequences: implications for character evolution and biogeography

Jobson, R. W., Playford, J., Cameron, K. M. and Albert, V. A. (2003) Molecular phylogenetics of Lentibulariaceae inferred from plastid rps16 Intron and trnL-F DNA sequences: implications for character evolution and biogeography. Systematic Botany, 28 1: 157-171.

Author Jobson, R. W.
Playford, J.
Cameron, K. M.
Albert, V. A.
Title Molecular phylogenetics of Lentibulariaceae inferred from plastid rps16 Intron and trnL-F DNA sequences: implications for character evolution and biogeography
Journal name Systematic Botany   Check publisher's open access policy
ISSN 0363-6445
Publication date 2003-01-01
Sub-type Article (original research)
Volume 28
Issue 1
Start page 157
End page 171
Total pages 15
Place of publication Notre Dame, Ind
Publisher American Society of Plant Taxonomists
Language eng
Subject C1
270401 Plant Systematics, Taxonomy and Phylogeny
780105 Biological sciences
780106 Political science and public policy
0699 Other Biological Sciences
Abstract Phylogenetic relationships among 75 species of Lentibulariaceae, representing the three recognized genera, were assessed by cladistic analysis of DNA sequences from the plastid rps16 intron and the trnL-F region. Sequence data from the two loci were analyzed both separately and in combination. Consensus trees from all analyses are congruent, and parsimony jackknife results demonstrate strong support for relationships both between and within each of the three demonstrably monophyletic genera. The genus Pinguicula is sister to a Genlisea-Utricularia clade, the phylogenetic structure within this clade closely follows Taylor's recent sectional delimitations based on morphology. Three principal clades are shown within Utricularia, with the basal sections Polypoinpholyx and Pleiochasia together forming the sister lineage of the remaining Utricularia species. Of the fundamental morphological specializations, the stoloniferous growth form apparently arose independently within Genlisea and Utricularia three times, and within Utricularia itself, perhaps more than once. The epiphytic habit has evolved independently at least three times, in Pinguicula, in Utricularia section Phyllaria, and within the two sections Orchidioides and Iperua (in the latter as bromeliad tank-epiphytes). The suspended aquatic habit may have evolved independently within sections Utricularia and Vesiculina. Biogeographic optimization on the phylogeny demonstrates patterns commonly associated with the boreotropics hypothesis and limits the spatial origin of Lentibulariaceae to temperate Eurasia or tropical America.
Keyword Plant Sciences
Evolutionary Biology
Genlisea Lentibulariaceae
Nucleotide-sequences
Cladistic-analysis
Parsimony Analysis
Flowering Plants
Ancestral Areas
Rbcl Sequences
Utricularia
Diversification
Bladderwort
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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Created: Wed, 15 Aug 2007, 03:45:06 EST