Ribosomal DNA Evidence and Disjunctions of Western American Portulacaceae

Hershkovitz, Mark; Zimmer, Elizabeth A.

doi:10.1006/mpev.1999.0720

Cited by 41 publications

(57 citation statements)

References 68 publications

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“…The disjunction of North and South American Opuntia has not been proposed previously, presumably because species of Opuntia exist throughout the Americas from Argentina to Canada (Anderson, 2001). Similar patterns of disjunctions between South America and North America can be seen in Cactoideae (Hernández‐Hernández et al, 2011), elsewhere in Opuntioideae (Griffith and Porter, 2009), as well as in the close relatives of cacti, Grahamia (Nyffeler, 2007) and Portulaca (Hershkovitz and Zimmer, 2000).…”

Section: Discussionsupporting

confidence: 53%

Phylogeny of Opuntia s.s. (Cactaceae): Clade delineation, geographic origins, and reticulate evolution

Majure

Puente

Griffith

et al. 2012

American J of Botany

169

205

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Section: Discussionsupporting

confidence: 53%

Phylogeny of Opuntia s.s. (Cactaceae): Clade delineation, geographic origins, and reticulate evolution

Majure

Puente

Griffith

et al. 2012

American J of Botany

169

205

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“…The grouping of the five genera from Portulacaceae corresponds to what Hershkovitz (1993) identified as the ''west American group'' on the basis of morphological characters (see also Hershkovitz and Zimmer, 2000). Moreover, the affinities of Talinaria and Anacampseros have been outlined by Hershkovitz (1993) and Hershkovitz and Zimmer (1997).…”

Section: Discussionmentioning

confidence: 74%

Molecular phylogenetics of Caryophyllales based on nuclear 18S rDNA and plastid rbcL, atpB, and matK DNA sequences

Cuénoud

Savolainen

Chatrou

et al. 2002

American J of Botany

506

361

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To study the inter- and infrafamilial phylogenetic relationships in the order Caryophyllales sensu lato (s.l.), ∼930 base pairs of the matK plastid gene have been sequenced and analyzed for 127 taxa. In addition, these sequences have been combined with the rbcL plastid gene for 53 taxa and with the rbcL and atpB plastid genes as well as the nuclear 18S rDNA for 26 taxa to provide increased support for deeper branches. The red pigments of Corbichonia, Lophiocarpus, and Sarcobatus have been tested and shown to belong to the betacyanin class of compounds. Most taxa of the order are clearly grouped into two main clades (i.e., "core" and "noncore" Caryophyllales) which are, in turn, divided into well-defined subunits. Phytolaccaceae and Molluginaceae are polyphyletic, and Portulacaceae are paraphyletic, whereas Agdestidaceae, Barbeuiaceae, Petiveriaceae, and Sarcobataceae should be given familial recognition. Two additional lineages are potentially appropriate to be elevated to the family level in the future: the genera Lophiocarpus and Corbichonia form a well-supported clade on the basis of molecular and chemical evidence, and Limeum appears to be separated from other Molluginaceae based on both molecular and ultrastructural data.

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“…(see McNeill, 1974). However, the present circumscription was suggested by Hershkovitz (1993Hershkovitz ( , 2006 and Hershkovitz & Zimmer (2000), as their informal "Western American Portulacaceae" subgroup, on the basis of vegetative morphology as well as molecular phylogeny analysis. The reestablishment of the genus Phemeranthus exemplifies very well the previous lack of solid knowledge to resolve issues in Portulacaceae classification: molecular phylogenetic investigations provide clear evidence that the traditional concept of Talinum is polyphyletic and consists of two distinct lineages; one (i.e., Phemeranthus) takes up a cladistically basal position in Montiaceae and the other (i.e., Talinum s.str.)…”

Section: Synopsis Of Families Of Portulacineaementioning

confidence: 84%

Disintegrating Portulacaceae: A new familial classification of the suborder Portulacineae (Caryophyllales) based on molecular and morphological data

Nyffeler

Eggli

2010

TAXON

130

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Traditional classifications of the suborder Portulacineae recognize six families: Basellaceae, Cactaceae, Didiereaceae, Halophytaceae, Hectorellaceae, and Portulacaceae. However, phylogenetic analyses based on molecular sequence data indicate that the traditional family Portulacaceae is paraphyletic and consists of three distinct lineages that also include Cactaceae, Didiereaceae, and Hectorellaceae. We use sequence data from the chloroplast genes matK and ndhF representing 64 species of Portulacineae and outgroups to reconstruct their phylogenetic relationships with Bayesian and maximum parsimony inference methods. Evidence from these molecular phylogenetic analyses as well as from comparative morphological investigations allow us to propose a revised familial classification of the suborder Portulacineae. We recognize eight monophyletic families: We provide a synopsis for this revised family classification with an identification key mainly based on habit and fruit characters, and family diagnoses with information on distribution, taxonomic diversity, and a brief discussion on phylogenetics and classification.

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Ribosomal DNA Evidence and Disjunctions of Western American Portulacaceae

Cited by 41 publications

References 68 publications

Phylogeny of Opuntia s.s. (Cactaceae): Clade delineation, geographic origins, and reticulate evolution

Phylogeny of Opuntia s.s. (Cactaceae): Clade delineation, geographic origins, and reticulate evolution

Molecular phylogenetics of Caryophyllales based on nuclear 18S rDNA and plastid rbcL, atpB, and matK DNA sequences

Disintegrating Portulacaceae: A new familial classification of the suborder Portulacineae (Caryophyllales) based on molecular and morphological data

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