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SUMMARY:Gradual evolution in the allopolyploid Arabidopsis suecica - Robin
  Burns
DTSTART:20211103T130000Z
DTEND:20211103T140000Z
UID:TALK163873@talks.cam.ac.uk
CONTACT:Dr Qi Wang
DESCRIPTION:Polyploidy (the duplication of whole genomes) is often associa
 ted with extreme climates and can provide the raw material for rapid adapt
 ation. However new polyploids need to overcome one critical challenge - po
 lyploidy itself. Polyploidy is a huge stress on a cell and can lead to dra
 matic genomic changes that are grouped under the umbrella term of "genome 
 shock". These include\, major chromosome rearrangements\, the upregulation
  of transposable elements and subgenome dominance in gene expression. The 
 vast majority of these observations have been made in crop species\, which
  can confound changes associated with polyploidy with domestication. Here\
 , I investigated the natural polyploid hybrid Arabidopsis suecica. Through
  generating a chromosome level assembly and examining populations of A. su
 ecica\, its ancestral species A. thaliana and A. arenosa and artificial A.
  suecica generated de novo in a lab environment\, I looked for evidence of
  dramatic changes in A. suecica relative to its ancestral species\, and ho
 w natural polyploids may differ from domestic ones.
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