Age and biogeography of major clades in Liliales

A robust phylogeny of 40 genera and all seven families of the Liliales based on rbcL sequences was dated by the mean branch-length method of Bremer and Gustafsson and by Sandersons nonparametric rate smoothing. The basal node was set to 82 million years (my) from the results of a previous more exten...

Full description

Saved in:
Bibliographic Details
Published in:American journal of botany 2001-09, Vol.88 (9), p.1695-1703
Main Authors: Vinnersten, Annika, Bremer, Kåre
Format: Article
Language:English
Subjects:
Age
Alstroemeriaceae
Biogeography
Botany
Campynemataceae
Colchicaceae
Confidence interval
dating
Flowers & plants
Fossils
Genera
Geography
Gondwana
Liliaceae
Liliales
Luzuriagaceae
Melanthiaceae
molecular clock
Parsimony
Phylogenetics
Phylogeny
Plants
Polymerase chain reaction
rbcL
rbcL gene
Smilacaceae
Southern hemisphere
Systematics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A robust phylogeny of 40 genera and all seven families of the Liliales based on rbcL sequences was dated by the mean branch-length method of Bremer and Gustafsson and by Sandersons nonparametric rate smoothing. The basal node was set to 82 million years (my) from the results of a previous more extensive dating involving all monocots. Confidence intervals for the age estimates were generated by bootstrap analysis. The results indicate that four well-supported clades of Liliales date back to the Cretaceous ~65 million years ago (mya), Campynemataceae, Melanthiaceae, Smilacaceae + Liliaceae, and Alstroemeriaceae + Luzuriagaceae + Colchicaceae. Aspects of historical biogeography were investigated by dispersal-vicariance analysis. Several dispersal and vicariance events were found to coincide with Late Cretaceous-Early Tertiary changes in continental interconnections. The study contains the first published sequence of Campymemanthe, supporting the Campynemataceae as a monophyletic group.
ISSN:0002-9122
1537-2197
DOI:10.2307/3558415