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SUMMARY:Integrating phylogenetics\, ecology and evo-devo to understand the
  origin of plant species: the role of spur length evolution in speciation 
 of the genus Linaria - Mario Fernandez-Mazuecos\, Beverley Glover Lab
DTSTART:20160225T130000Z
DTEND:20160225T133000Z
UID:TALK63126@talks.cam.ac.uk
CONTACT:Jeongmin Choi
DESCRIPTION:Floral nectar spurs are considered a key innovation promoting 
 diversification in angiosperms. Spurs are tubular outgrowths of floral org
 ans containing a nectar reward for pollinators. It is hypothesized that th
 ey mediate reproductive isolation by promoting pollinator specialization. 
 We are aplying a multidisciplinary (phylogenetics\, pollination ecology\, 
 evolutionary developmental biology) and multi-scale (genera\, species\, po
 pulations) approach to understand the evolution of nectar spurs and their 
 role in speciation in the tribe Antirrhineae (Plantaginaceae\; c. 330 spec
 ies). Phylogenetic comparative methods are used to estimate the correlatio
 n between nectar spur evolution and speciation rates of Antirrhineae. Ance
 stral state reconstructions indicate three to four acquisitions of nectar 
 spurs in the course of Antirrhineae evolution\, including that in the most
  successful genus Linaria (c. 160 species). In particular\, we are investi
 gating mechanisms of speciation and spur evolution in a recently-diversifi
 ed clade formed by eight species of Linaria that display wide variation in
  spur length. Phylogenetic relationships are resolved using next-generatio
 n sequencing techniques (genotyping-by-sequencing). The relative roles of 
 pollinators and other isolating factors (including habitat isolation) are 
 quantified\, and the ontogenetic and genetic basis of spur length variatio
 n and evolution is investigated using an evo-devo approach.
LOCATION:Department of Plant Sciences\, Large Lecture Theatre
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