Knox, Eric .
Phylogenetic Analysis of 51 Complete Chloroplast Genome Sequences from the Cyphiaceae and Lobeliaceae (Campanulales).
The complete chloroplast genome sequences from 11 species of Cyphiaceae, 40 species of Lobeliaceae, and the outgroup species Carpodetus serratus were analyzed with seven previously generated genomes including six outgroup species in the Asteridae and a representative of the closely related Campanulaceae (Trachelium caeruleum). The newly sequenced genomes were selected based on two criteria: 1) the genome arrangement, and 2) phylogenetic position based on previous molecular systematic results. The primary goal is to understand why the chloroplast genomes in the Campanulales have such extensive rearrangements, but an accurate phylogenetic estimate is needed to reconstruct the evolutionary history of these genomes. Phylogenetic analyses of the point mutations in these genomes using parsimony, maximum likelihood, and Baysian inference yield congruent and unambiguously supported resolution of relationships at all but six nodes of the phylogeny. The problem in all six cases involves reconstructing events that happened in rapid succession during a short time interval, but these nodes range in age from 5 to 60 million years ago, and our understanding of more recent events aids our interpretation of more ancient events.
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1 - Indiana University, Biology, Jordan Hall 142, 1001 East Third Street, Bloomington, IN, 47405, USA
Presentation Type: Oral Paper:Papers for Sections
Location: Franklin A/Hyatt
Date: Monday, July 9th, 2012
Time: 9:30 AM