Project description
Research sheds further light on signal transduction at the membrane level
Signal transduction is the process by which a cell converts external signals into functional responses. This process often depends on a few central proteins to interpret diverse inputs and trigger appropriate responses. Understanding how these proteins recognise specific signals remains elusive. Recent research suggests that precise spatiotemporal organisation and the formation of signalling modules into membrane nanodomains are crucial for signal specificity in plant signal transduction. In Arabidopsis, the GTPase ROP6 forms nanodomains in response to auxin-mediated gravitropic stimulus and osmotic stress. Funded by the Marie Skłodowska-Curie Actions, the SONA project will use ROP6 as a model to dissect the self-organising principles of these nanodomains. Using live super-resolution microscopy, researchers will investigate how ROP6 nanodomains nucleate after auxin and osmotic treatments.
Objective
Signal transduction of diverse inputs often relies on a comparatively small number of central signal integrators. The resulting question, how such a central signal transmission protein can recognise the specific input and trigger the respective, appropriate outputs is as of yet unresolved. However, recent research focusing on plant signal transduction suggested that the precise spatiotemporal organisation and the organisation of signalling modules into membrane nanodomains could play a crucial role in achieving signal specificity. A prime example in Arabidopsis is the GTPase RHO OF PLANTS (ROP)6 that forms nanodomains in the auxin-mediated gravitropic response as well as in osmotic stress. In SONA, I will use ROP6 as model system for membrane organisation at the nanoscale to dissect the self-organising principles of nanodomain formation and function. My host group and collaborators discovered how ROP6 assembles into nanodomains, which will be the foundation for a detailed and innovative characterisation of how protein-lipid interplay contributes to nanodomain specificity. Based on preliminary results, I will use live super-resolution microscopy to investigate how and where ROP6 nanodomains are nucleated after auxin and hyperosmotic treatment, respectively. In addition, I have two parallel, complementing goals in identifying the membrane lipids necessary for sustaining the nanodomains and the protein components required for feedback loops and specificity in ROP6 nanodomain signalling. Taken together, SONA will give insights into the membrane organisation of ROP6 nanodomains at unprecedented spatiotemporal resolution. It will also challenge our understanding of the signal transduction at the plasma membrane by emphasising how self-organising principles contribute to the formation of specific signalling modules. Finally, this action will provide me with valuable training to develop into an independent researcher in the field of plant lipid and membrane research.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences physical sciences optics microscopy super resolution microscopy
- natural sciences biological sciences biochemistry biomolecules proteins
- natural sciences biological sciences biochemistry biomolecules lipids
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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(opens in new window) HORIZON-MSCA-2023-PF-01
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75794 Paris
France
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