A vacuolar hexose transport is required for xylem development in the inflorescence stem

• DOI: 10.1093/plphys/kiab551
• Publication Date: 2021-11-17T12:14:41Z
• Authors: Emilie Aubry; Beate Hoffmann; Françoise Vilaine; Françoise Gilard; Patrick A W Klemens; Florence Guérard; Bertrand Gakière; H Ekkehard Neuhaus; Catherine Bellini; Sylvie Dinant; Rozenn Le Hir
• Keywords: Secondary cell wall

In Angiosperms, the development of vascular system is controlled by a complex network transcription factors. However, how nutrient availability in cells affects their remains to be addressed. At cellular level, cytosolic sugar regulated mainly exchanges at tonoplast through active and/or facilitated transport. Arabidopsis (Arabidopsis thaliana), among genes encoding tonoplastic transporters, SUGAR WILL EVENTUALLY BE EXPORTED TRANSPORTER 16 (SWEET16) and SWEET17 expression has been previously detected system. Here, using reverse genetics approach, we propose that tonoplast, SWEET16, are important for xylem cell division as revealed particular decreased number swt16 mutant accumulation SWEET16 procambium-xylem boundary. addition, demonstrate transport hexoses mediated required sustain formation secondary wall. This result line with defect wall composition measured Fourier-transformed infrared spectroscopy swt16swt17 double upregulation several involved synthesis. Our work therefore supports model which partially depends on exchange xylem-forming cells.