UPSC Cutting-Edge Seminar: Jenny Russinova
Date:
Tuesday, December 03, 2024 10:00 - 11:00
Duration:
1 Hour
Categories:
UPSC Cutting-Edge Seminar
Jenny Russinova
Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium.
Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium.
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Title: Brassinosteroids in Transit: The Role of Short-Distance Transport in Maintaining Brassinosteroid Homeostasis
Abstract:
Brassinosteroids are steroidal phytohormones essential for plant growth, development, and adaptation to environmental stresses. Acting in a dose-dependent manner, they do not move over long distances within plants, making the maintenance of brassinosteroid homeostasis crucial for their function. In roots, bioactive brassinosteroid synthesis depends on cell-to-cell movement of hormone precursors, while brassinosteroid perception in the apoplast requires their export from the cell. However, the mechanisms governing short-distance brassinosteroid transport remain unknown, and its role in regulating endogenous brassinosteroid levels is still unexplored.
In this presentation, I will provide evidence for the symplastic movement of brassinosteroids and their active export to the apoplast, where they initiate signalling. Our work reveals a previously unrecognized mode of steroid transport in eukaryotes and highlights an additional layer of brassinosteroid homeostasis regulation in plants, which is vital for brassinosteroid function.
Host: Peter Marhavý
Jenny Russinova
Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium.
Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium.
Title: Brassinosteroids in Transit: The Role of Short-Distance Transport in Maintaining Brassinosteroid Homeostasis
Abstract:
Brassinosteroids are steroidal phytohormones essential for plant growth, development, and adaptation to environmental stresses. Acting in a dose-dependent manner, they do not move over long distances within plants, making the maintenance of brassinosteroid homeostasis crucial for their function. In roots, bioactive brassinosteroid synthesis depends on cell-to-cell movement of hormone precursors, while brassinosteroid perception in the apoplast requires their export from the cell. However, the mechanisms governing short-distance brassinosteroid transport remain unknown, and its role in regulating endogenous brassinosteroid levels is still unexplored.
In this presentation, I will provide evidence for the symplastic movement of brassinosteroids and their active export to the apoplast, where they initiate signalling. Our work reveals a previously unrecognized mode of steroid transport in eukaryotes and highlights an additional layer of brassinosteroid homeostasis regulation in plants, which is vital for brassinosteroid function.
Host: Peter Marhavý