Vacuolar sucrose homeostasis is critical for development, seed properties and survival of dark phases of Arabidopsis

Duc Phuong Vu, Cristina Martins Rodrigues, Benjamin Jung, Garvin Meissner, Patrick A.W. Klemens, Daniela Holtgräwe, Lisa Fürtauer, Thomas Nägele, Petra Nieberl, Benjamin Pommerrenig & Ekkehard H. Neuhaus
Although we know that most of the cellular sucrose is present in the cytosol and vacuole, our knowledge on the impact of this sucrose compartmentation on plant properties is still fragmentary. Here we attempted to alter the intracellular sucrose compartmentation of Arabidopsis mesophyll cells by either, overexpression of the vacuolar sucrose loader BvTST2.1 or by generation of mutants with decreased vacuolar invertase activity (amiR vi1-2). Surprisingly, BvTST2.1 overexpression led to increased monosaccharide levels in leaves,...

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  • Bielefeld University
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  • University of Kaiserslautern
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  • Ludwig Maximilian University of Munich
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