HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

What's this?

This Article Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (15) Citing Articles via Google Scholar Google Scholar Articles by Bellstedt, D. U. Articles by Harley, E. H. Search for Related Content PubMed Articles by Bellstedt, D. U. Articles by Harley, E. H. Agricola Articles by Bellstedt, D. U. Articles by Harley, E. H. Social Bookmarking                            What's this?

Phylogenetic relationships in Disa based on non-coding trnL-trnF chloroplast sequences: evidence of numerous repeat regions¹

²Department of Biochemistry, University of Stellenbosch, Stellenbosch, Private Bag X1, Matieland 7602, South Africa; ³Bolus Herbarium, University of Cape Town, Rondebosch 7700, South Africa; and ⁴Department of Chemical Pathology, University of Cape Town Medical School, Mowbray 7925, South Africa

Sequence data from the intron and spacer of the trnL-F chloroplast region elucidate the phylogenetic relationships of the tribe Diseae (Orchidoideae: Orchidaceae). Within Diseae, 41 species of Disa, two of Brownleea, three of Satyrium, and two of Corycium were included, with five species of Habenaria sensu lato (Orchideae) and one epidendroid as outgroups. The sequences revealed substitutions and considerable length variation, due mainly to the presence of repeat motifs. Phylogenetic analysis using parsimony revealed five distinct clades. The branching order of the five weakly supported the paraphyly of Diseae, with the successive divergence of Brownleea, Corycium, Habenaria, Satyrium, and Disa. Within the monophyletic Disa, three main groupings appeared, two strongly supported clades representing sect. Racemosae and sect. Coryphaea and the third grouping containing several clades currently grouped into sections based on morphological phylogenies. Some discrepancies between the molecular phylogeny and the phylogeny based on morphological characters may require reevaluation of some of the morphological characters. The presence of different numbers of repeat motifs, both among different taxa and within taxa, indicates that these characters may be phylogenetically informative at the population level.

Key Words: Brownleeinae • Coryciinae • Diseae • Disinae • molecular phylogeny • Orchidaceae • Satyriinae • trnL-trnF

CiteULike    Complore    Connotea    Del.icio.us    Digg    Facebook    Reddit    Technorati    Twitter    What's this?

This article has been cited by other articles:

				L. I. Cabrera, G. A. Salazar, M. W. Chase, S. J. Mayo, J. Bogner, and P. Davila Phylogenetic relationships of aroids and duckweeds (Araceae) inferred from coding and noncoding plastid DNA Am. J. Botany, September 1, 2008; 95(9): 1153 - 1165. [Abstract] [Full Text] [PDF]

				J. Shaw, E. B. Lickey, J. T. Beck, S. B. Farmer, W. Liu, J. Miller, K. C. Siripun, C. T. Winder, E. E. Schilling, and R. L. Small The tortoise and the hare II: relative utility of 21 noncoding chloroplast DNA sequences for phylogenetic analysis Am. J. Botany, January 1, 2005; 92(1): 142 - 166. [Abstract] [Full Text] [PDF]

				G. A. Salazar, M. W. Chase, M. A. Soto Arenas, and M. Ingrouille Phylogenetics of Cranichideae with emphasis on Spiranthinae (Orchidaceae, Orchidoideae): evidence from plastid and nuclear DNA sequences Am. J. Botany, May 1, 2003; 90(5): 777 - 795. [Abstract] [Full Text] [PDF]