[Plsfaculty] School of Plant Sciences Faculty Research Forum - Monday June 3rd 1 PM Marley 341H

[Chieri Kubota]

A friendly reminder…  See you tomorrow!

From:  Chieri Kubota <ckubota at ag.arizona.edu>
Date:  Friday, May 24, 2013 6:36 PM
To:  <plsfaculty at ag.arizona.edu>
Subject:  [Plsfaculty] School of Plant Sciences Faculty Research Forum -
Monday June 3rd 1 PM Marley 341H

Dear all faculty members:
 
Next SPLS Faculty Research Forum will be Monday June 3rd (1PM, in Marley
341H).
The topical presenter is Eric Lyons. The title and abstract are shown below.
I look forward to seeing many of you at the Research Forum.
Have a good weekend!
 
Chieri 
 
 
‘Architecture and Evolution of the genome of Utricularia gibba’ by Eric
Lyons
 
Abstract.  The carnivorous plant Utricularia gibba is a small species of
bladderwort in the same order as mints (Lamiales).   Commonly known as the
floating bladderwort, this species forms floating mats, and in order to
supplement their nitrogen and phosphorous intake, captures small organisms
as prey using bladder-like traps.   While remarkable for its natural
history, U. gibba also has one of the smallest known angiosperm genomes (82
megabase), which is approximately two-thirds the size of Arabidopsis
thaliana.  Here we focus on the structural analyses of its genome sequence
using the genome of tomato, the evolutionary closest species with a
non-restricted genome available, as an outgroup.  As expected, nearly all
nonessential inter- and intra-genomic sequences have been removed, leaving
behind a remarkably compact extant genome.  However, despite its small size,
the genome of Utricularia gibba held a surprise:  its lineage had undergone
three independent whole genome duplication events since its divergence with
tomato.  Following each of these events, the genome underwent massive
fractionation which removed the majority of duplicated homeologous genes.
This repeated pattern of whole genome duplication followed by subsequent
fractionation made deciphering the evolution of Utricularia gibba quite
difficult.  This talk will focus on the analytical process for revealing the
genomic evolution of Utricularia gibba using the comparative genomics
platform CoGe (http://genomevolution.org) <about:blank> , which may be used
for the analysis of other genomes with similarly dynamic evolutionary
processes.
 
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