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Abstract Detail


Knox, Eric [1].

The Cosmopolitan Radiation of Lobelia (Lobeliaceae).

The Lobeliaceae comprise 34 genera, of which Lobelia is the ‘core genus’ in the family and the others are segregate genera based on subsequent evolutionary modification of the reproductive features originally used to describe Lobelia. South Africa and Australia have many diverse lineages of Lobeliaceae, but the phylogenetic relationships of these lineages clearly show that Lobelia originated in the Western Cape Region of South Africa, and the diversity in Australia is due to repeated colonization. Roughly 20 million years ago, Lobelia colonized Europe, western North America, Mexico and the Caribbean, eastern North America, South America, Australasia, Madagascar, and eastern Asia within a 3 million year period. Sequence from complete plastid genomes finally provides a sufficiently large data set to accurately reconstruct the phylogenetic relationships of this rapid cosmopolitan radiation. China was the source area for evolution of the giant lobelias, which took a biogeographic victory lap, with one lineage colonizing Hawaii and South Pacific islands, while the other lineage diversified on the mountains of East Africa but subsequently reached West Africa and independently reached Angola and Brazil.

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1 - Indiana University, Department of Biology, Jordan Hall 142, 1001 East Third Street, Bloomington, IN, 47405, USA

whole plastid phylogeny.

Presentation Type: Oral Paper
Session: 46, Asterids I part C & Asterids II
Location: 103/Savannah International Trade and Convention Center
Date: Wednesday, August 3rd, 2016
Time: 2:15 PM
Number: 46004
Abstract ID:141
Candidate for Awards:None

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