Université de Fribourg

Master and servant: Regulation of auxin transporters by FKBPs and cyclophilins

Geisler, Markus ; Bailly, Aurélien ; Ivanchenko, Maria

In: Plant Science, 2016, vol. 245, p. 1–10

Plant development and architecture are greatly influenced by the polar distribution of the essential hormone auxin. The directional influx and efflux of auxin from plant cells depends primarily on AUX1/LAX, PIN, and ABCB/PGP/MDR families of auxin transport proteins. The functional analysis of these proteins has progressed rapidly within the last decade thanks to the establishment of...

Université de Fribourg

The inter-kingdom volatile signal indole promotes root development by interfering with auxin signalling

Bailly, Aurélien ; Groenhagen, Ulrike ; Schulz, Stefan ; Geisler, Markus ; Eberl, Leo ; Weisskopf, Laure

In: The Plant Journal, 2014, vol. 80, no. 5, p. 758–771

Recently, emission of volatile organic compounds (VOCs) has emerged as a mode of communication between bacteria and plants. Although some bacterial VOCs that promote plant growth have been identified, their underlying mechanism of action is unknown. Here we demonstrate that indole, which was identified using a screen for Arabidopsis growth promotion by VOCs from soil-borne bacteria, is a potent...

Université de Fribourg

Arabidopsis TWISTED DWARF1 functionally interacts with auxin exporter ABCB1 on the root plasma membrane

Wang, Bangjun ; Bailly, Aurélien ; Zwiewka, Marta ; Henrichs, Sina ; Azzarello, Elisa ; Mancuso, Stefano ; Maeshima, Masayoshi ; Friml, Jiří ; Schulz, Alexander ; Geisler, Markus

In: The Plant Cell, 2013, vol. 25, no. 1, p. 202-214

Plant architecture is influenced by the polar, cell-to-cell transport of auxin that is primarily provided and regulated by plasma membrane efflux catalysts of the PIN-FORMED and B family of ABC transporter (ABCB) classes. The latter were shown to require the functionality of the FK506 binding protein42 TWISTED DWARF1 (TWD1), although underlying mechanisms are unclear. By genetic manipulation of...