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The genetic basis of singlet oxygen-mediated acclimation and stress responses of Arabidopsis thaliana

English title The genetic basis of singlet oxygen-mediated acclimation and stress responses of Arabidopsis thaliana
Applicant Apel Klaus
Number 109360
Funding scheme Project funding (Div. I-III)
Research institution Departement Umweltsystemwissenschaften ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Botany
Start/End 01.10.2005 - 31.03.2009
Approved amount 608'151.00
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All Disciplines (2)

Discipline
Botany
Molecular Biology

Keywords (7)

signal transduction; singlet oxygen; Reactive oxygen species; stress; programmed cell death; retrograde signaling; Arabidopsis thaliana

Lay Summary (English)

Lead
Lay summary
Plants under stress often suffer from damages that have been interpreted as unavoidable consequences of injuries inflicted by toxic levels of reactive oxygen species (ROS). However, this paradigm has to be modified. We have isolated and used the conditional flu mutant of Arabidopsis to induce non-invasively the release of singlet oxygen in chloroplasts. Singlet oxygen-mediated stress responses of the flu mutant such as seedling lethality and growth inhibition of mature plants are not caused by oxidative damage, but result from genetic programs that are activated after the production of singlet oxygen has been perceived by the plant. This proposal is aimed at understanding and modifying genetic constraints that determine the adaptability of plants to environmental stress. The identification of genetic factors that determine the robustness of plants in response to climatic changes is of immense importance to both agriculture and the environment.
Direct link to Lay Summary Last update: 21.02.2013

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Associated projects

Number Title Start Funding scheme
59068 A genetic approach towards elucidating the feedback control of tetrapyrrole biosynthesis in Arabidopsis thaliana 01.04.2000 Project funding (Div. I-III)

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