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FOR 948 P1: The role of hydrogen peroxide as signalling molecule in leaf senescence and its impact on senescence-induced nitrogen mobilisation
Project
Project code: DFG FOR 948
Contract period: 01.01.2009
- 31.12.2010
Purpose of research: Basic research
Nitrogen mobilization is one of the main metabolic processes during leaf senescence; however, the rate-limiting steps and the molecular mechanisms of the regulation of this process are still unclear. Therefore, we will focus on the understanding of the regulatory mechanisms of leaf senescence which finally contribute to nitrogen mobilization processes.
In the model plant Arabidopsis thaliana we could show that hydrogen peroxide is one of the key signalling molecules in this process and that the cellular compartment where the hydrogen peroxide is formed appears to be important for its signalling function.
In this proposal, we would like to analyse the role of hydrogen peroxide in the expression of senescence-associated transcription factors and genes involved in the mobilization of nitrogen in more detail in Arabidopsis and in the closely related crop plant rapeseed. Furthermore, we would like to develop an in vivo imaging system for hydrogen peroxide for different cellular compartments to better understand its regulatory role and in the long run create plants which can be very specifically manipulated in their senescence regulation and nitrogen mobilization.
Section overview
Subjects
- Plant Nutrition
Collaborative Project
FOR 948: Nitrogen uptake, metabolism and remobilization in leaves during plant senescence
