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A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

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Phylogenetic relationships within Colchicaceae.

Annika Vinnersten¹, Gail Reeves

¹Department of Systematic Botany, Evolutionary Biology Centre, Uppsala Universitet, Norbyvägen 18D, SE-752 36 Uppsala, Sweden;

American Journal of Botany

|June 11, 2011

Summary

This summary is machine-generated.

Phylogenetic analysis of the Colchicaceae family using plastid DNA reveals a core African clade and a grade of other taxa. Unexpectedly, the tribe Iphigenieae is paraphyletic, with Colchicum nested within Androcymbium.

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Area of Science:

Plant Systematics
Molecular Phylogenetics
Evolutionary Biology

Background:

The Colchicaceae family's intrafamilial relationships require further investigation.
Previous classifications may not accurately reflect evolutionary history.

Purpose of the Study:

To investigate the intrafamilial relationships of the Colchicaceae family.
To test existing subfamily divisions and tribal classifications.

Main Methods:

Sequencing of three plastid regions: rps16 intron, atpB-rbcL intergenic spacer, and trnL-F region.
Analysis of 3830 characters from 73 taxa, both separately and in a combined matrix.

Main Results:

The study does not support the division of Colchicaceae into two subfamilies.
A core clade of primarily African genera and a grade of Australian, North American, and Asian taxa were identified.
The tribe Iphigenieae was found to be paraphyletic, with Colchicum nested within Androcymbium.
Taxa of Gloriosa and Littonia were intermixed in the phylogenetic analysis.

Conclusions:

The current classification of Colchicaceae requires revision based on molecular data.
Phylogenetic insights challenge traditional tribal and generic delimitations within the family.