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

This Article Full Text Full Text (PDF) An erratum has been published An erratum has been published 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 ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (20) Citing Articles via Google Scholar Google Scholar Articles by Bakker, F. T. Articles by Gibby, M. Search for Related Content PubMed PubMed Citation Articles by Bakker, F. T. Articles by Gibby, M. Agricola Articles by Bakker, F. T. Articles by Gibby, M.

Mitochondrial and chloroplast DNA-based phylogeny of Pelargonium (Geraniaceae)¹

² Department of Botany, Centre for Plant Diversity and Systematics, The University of Reading, P.O. Box 221, Reading RG6 6AS, UK; and ³ Department of Botany, Natural History Museum, London SW7 5BD, UK

ABSTRACT

Overall phylogenetic relationships within the genus Pelargonium (Geraniaceae) were inferred based on DNA sequences from mitochondrial(mt)-encoded nad1 b/c exons and from chloroplast(cp)-encoded trnL (UAA) 5' exon–trnF (GAA) exon regions using two species of Geranium and Sarcocaulon vanderetiae as outgroups. The group II intron between nad1 exons b and c was found to be absent from the Pelargonium, Geranium, and Sarcocaulon sequences presented here as well as from Erodium, which is the first recorded loss of this intron in angiosperms. Separate phylogenetic analyses of the mtDNA and cpDNA data sets produced largely congruent topologies, indicating linkage between mitochondrial and chloroplast genome inheritance. Simultaneous analysis of the combined data sets yielded a well-resolved topology with high clade support exhibiting a basic split into small and large chromosome species, the first group containing two lineages and the latter three. One large chromosome lineage (x = 11) comprises species from sections Myrrhidium and Chorisma and is sister to a lineage comprising P. mutans (x = 11) and species from section Jenkinsonia (x = 9). Sister to these two lineages is a lineage comprising species from sections Ciconium (x = 9) and Subsucculentia (x = 10). Cladistic evaluation of this pattern suggests that x = 11 is the ancestral basic chromosome number for the genus.

Key Words: chloroplast DNA • Geraniaceae • mitochondrial DNA • nad1 • Pelargonium • phylogeny • trnL–F

This article has been cited by other articles:

				J. Chat, B. Jauregui, R. J. Petit, and S. Nadot Reticulate evolution in kiwifruit (Actinidia, Actinidiaceae) identified by comparing their maternal and paternal phylogenies Am. J. Botany, May 1, 2004; 91(5): 736 - 747. [Abstract] [Full Text] [PDF]

				C. S. Jones, Z. G. Cardon, and A. D. Czaja A phylogenetic view of low-level CAM in Pelargonium (Geraniaceae) Am. J. Botany, January 1, 2003; 90(1): 135 - 142. [Abstract] [Full Text] [PDF]

				S. A. Kelchner Group II introns as phylogenetic tools: structure, function, and evolutionary constraints Am. J. Botany, October 1, 2002; 89(10): 1651 - 1669. [Abstract] [Full Text] [PDF]

				K.-O. Yoo, P. P. Lowry II, and J. Wen Discordance of chloroplast and nuclear ribosomal DNA data in Osmorhiza (Apiaceae) Am. J. Botany, June 1, 2002; 89(6): 966 - 971. [Abstract] [Full Text] [PDF]