Objective
Plant cells have two kinds of cell elongation systems; diffuse growth and tip growth. Tip growth is highly polarized and the growth only occurs at the tip of the cell. Root hairs are tip growing projections that arise from specialised root epidermal cells. The localization of growth to the hair tip is controlled by the local production of reactive oxygen species (ROS) produced by the RHD2 NADPH oxidase. Therefore identifying and characterising proteins that spatially regulate RHD2 activity is central to understand the mechanism of tip growth. However, how and where RHD2 protein is activated and regulates the accumulation of ROS at the root hair tip is still unknown. Thus, the aims of this research are to determine the subcellular localization of RHD2 proteins and determine if RHD2 is directly regulated by small Rho GTPases called ROPs, which I predict regulate this NADPH oxidase.
Firstly I will determine subcellular localization of RHD2 protein in root hair cells. I will use plants expressing an RHD2-YFP fusion protein in combination with confocal microscopy and spinning disc microscopy to investigate the protein localization during hair development.
Secondly, I will identify and characterize the ROPs that are expressed during root hair development. After identification of root hair specific ROP by whole mount in situ hybridization, I will determine the subcellular localization of ROP using plants expressing ROP and CFP fusion protein.
Thirdly, I will test if RHD2 physically interacts with ROP proteins. Because RHD2 is predicted to be a membrane protein, I will use split-ubiquitin yeast two-hybrid system to determine if RHD2 and ROP interact in vitro. For in vivo analysis, I will perform bimolecular fluorescence complementation (BiFC) and FRET approaches, both of which enable us to see the protein-protein interaction in developing root hairs. Together these analyses will define the mechanism of the RHD2 NADPH oxidase regulation during cell development.
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 biological sciences biochemistry biomolecules proteins proteomics
- natural sciences physical sciences optics microscopy confocal microscopy
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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)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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.
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.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP6-2004-MOBILITY-7
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Funding Scheme
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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.
IIF - Marie Curie actions-Incoming International Fellowships
Coordinator
NORWICH
United Kingdom
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