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A plant which acclimatizes with no exterior influence
Date:11/25/2013

act as sunscreens and antioxidants, but also of enzymes which repair the damage caused to the DNA during light exposure.

In collaboration with his colleagues from the Universities of Ghent (Belgium) and Freiburg (Germany), Roman Ulm's team has generated a transgenic plant equipped with an UVR8 mutated receptor. 'The substitution of just one amino acid by another was enough for the receptor to remain constantly active, even without UV', describes Marc Heijde, postdoctoral fellow and one of the article's main authors. The fact that this receptor is always switched on results in a constant stimulation of the genes necessary for the development of survival responses'.

A complete UV shield

The transgenic plant acclimatises constitutively and does not suffer from over-exposure to UVB. This is also due to a high production of flavonoids, including anthocyanins, molecules with powerful antioxidant properties for both plants and humans. 'This plant is a variant of Arabidopsis thaliana, a model organism widely used in the laboratory. It allows us to explore in detail the intracellular processes involved in acclimatisation and makes for an excellent study model as part of the research aimed at improving crop plants', states Roman Ulm.


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Contact: Roman Ulm
roman.ulm@unige.ch
022-379-3650
Universit de Genve
Source:Eurekalert

Page: 1 2

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