Molecular evidence for the common origin of snap-traps among carnivorous plants

Cameron, Kenneth M., Wurdack, Kenneth J. and Jobson, Richard W. (2002) Molecular evidence for the common origin of snap-traps among carnivorous plants. American Journal of Botany, 89 9: 1503-1509. doi:10.3732/ajb.89.9.1503

Author Cameron, Kenneth M.
Wurdack, Kenneth J.
Jobson, Richard W.
Title Molecular evidence for the common origin of snap-traps among carnivorous plants
Journal name American Journal of Botany   Check publisher's open access policy
ISSN 0002-9122
Publication date 2002-09-01
Sub-type Article (original research)
DOI 10.3732/ajb.89.9.1503
Open Access Status Not yet assessed
Volume 89
Issue 9
Start page 1503
End page 1509
Total pages 7
Place of publication Baltimore, MD, USA
Publisher Botanical Society of America
Language eng
Subject C1
270401 Plant Systematics, Taxonomy and Phylogeny
780105 Biological sciences
Abstract The snap-trap leaves of the aquatic waterwheel plant (Aldrovanda) resemble those of Venus' flytrap (Dionaea), its distribution and habit are reminiscent of bladderworts (Utricularia), but it shares many reproductive characters with sundews (Drosera). Moreover, Aldrovanda has never been included in molecular phylogenetic studies, so it has been unclear whether snap-traps evolved only once or more than once among angiosperms. Using sequences from nuclear 18S and plastid rbcL, atpB, and matK genes, we show that Aldrovanda is sister to Dionaea, and this pair is sister to Drosera. Our results indicate that snap-traps are derived from flypaper-traps and have a common ancestry among flowering plants, despite the fact that this mechanism is used by both a terrestrial species and an aquatic one. Genetic and fossil evidence for the close relationship between these unique and threatened organisms indicate that carnivory evolved from a common ancestor within this caryophyllid clade at least 65 million years ago.
Keyword Plant Sciences
Carnivorous Plants
Molecular Systematics
Rbcl Sequence
18s Rdna
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, 03:45:02 EST