Dr Lisbeth Garbrecht Thygesen, Copenhagen

Dislocations in plant cell walls
When Feb 02, 2015
from 02:00 PM to 03:00 PM
Where Audrey Wood Seminar Room, Clarendon Laboratory, Parks Road
Contact Name
Contact Phone 01865-273925
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Senior Researcher Lisbeth G. Thygesen has worked within plant biomass science for more than 20 years, mostly within academia, in Denmark as well as abroad. Her research interests lie within plant biomass characterisation with the scope of linking physical and chemical characteristics to function and performance both within traditional wood science (for example wood modification and wood-water interactions) and within plant biomass utilisation via processes such as enzymatic degradation as part of biorefining schemes. She has worked extensively within plant cell wall–water-enzyme interactions, plant cell wall microstructure (especially cellulose) and in-situ testing. One of her research interest is the structural and functional characteristics of irregular plant cell wall regions known as dislocations or slip planes. One of the outcomes of these efforts is the result that elongated thick-walled plant walls break more easily at dislocations than at other locations during processing and that dislocations therefore are instrumental in the important fibre attrition taking place during the initial liquefaction step within biorefining.

 In the presentation, an overview of plant cell wall dislocations will be given. The talk will include subjects such as how common dislocations are, in which situations they are known to be formed during plant growth and after harvest, the structural characteristics of dislocations (to the extent these are known) as derived from different types of microscopy and spectroscopy, and the role of dislocations in plant biomass degradation during biorefining.