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Université de Fribourg

Linking comparative genomics of nine potato-associated pseudomonas isolates with their differing biocontrol potential against late blight

Vrieze, Mout De ; Varadarajan, Adithi R. ; Schneeberger, Kerstin ; Bailly, Aurélien ; Rohr, Rudolf P. ; Ahrens, Christian H. ; Weisskopf, Laure

In: Frontiers in Microbiology, 2020, vol. 11, p. 857

For plants, the advantages of associating with beneficial bacteria include plant growth promotion, reduction of abiotic and biotic stresses and enhanced protection against various pests and diseases. Beneficial bacteria rightly equipped for successful plant colonization and showing antagonistic activity toward plant pathogens seem to be actively recruited by plants. To gain more insights into...

Université de Fribourg

Biocontrol activity of three Pseudomonas in a newly assembled collection of Phytophthora infestans isolates

De Vrieze, Mout ; Gloor, Ramona ; Massana Codina, Josep ; Torriani, Stefano ; Gindro, Katia ; L?Haridon, Floriane ; Bailly, Aurélien ; Weisskopf, Laure

In: Phytopathology, 2019, vol. 109, no. 9, p. 1555–1565

Late blight caused by the oomycete Phytophthora infestans constitutes the greatest threat to potato production worldwide. Considering the increasing concerns regarding the emergence of novel fungicide-resistant genotypes and the general demand for reducing inputs of synthetic and copper-based fungicides, the need for alternative control methods is acute. Several bacterial antagonists have...

Université de Fribourg

Mining the volatilomes of plant-associated microbiota for new biocontrol solutions

Bailly, Aurélien ; Weisskopf, Laure

In: Frontiers in Microbiology, 2017, vol. 8, p. -

Microbial lifeforms associated with land plants represent a rich source for crop growth- and health-promoting microorganisms and biocontrol agents. Volatile organic compounds (VOCs) produced by the plant microbiota have been demonstrated to elicit plant defenses and inhibit the growth and development of numerous plant pathogens. Therefore these molecules are prospective alternatives to...

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

Structure and mechanism of ATP-dependent phospholipid transporters

López-Marqués, Rosa L. ; Poulsen, Lisbeth Rosager ; Bailly, Aurélien ; Geisler, Markus ; Pomorski, Thomas Günther ; Palmgren, Michael G.

In: Biochimica et Biophysica Acta (BBA) - General Subjects, 2014, p. -

Background: ATP-binding cassette (ABC) transporters and P4-ATPases are two large and seemingly unrelated families of primary active pumps involved in moving phospholipids from one leaflet of a biological membrane to the other.Scope of review: This review aims to identify common mechanistic features in the way phospholipid flipping is carried out by two evolutionarily unrelated families of...

Université de Fribourg

Expression of TWISTED DWARF1 lacking its in-plane membrane anchor leads to increased cell elongation and hypermorphic growth

Bailly, Aurélien ; Wang, Bangjun ; Zwiewka, Marta ; Pollmann, Stephan ; Schenck, Daniel ; Lüthen, Hartwig ; Schulz, Alexander ; Friml, Jiri ; Geisler, Markus

In: The Plant Journal, 2014, vol. 77, no. 1, p. 108–118

Plant growth is achieved predominantly by cellular elongation, which is thought to be controlled on several levels by apoplastic auxin. Auxin export into the apoplast is achieved by plasma membrane efflux catalysts of the PIN-FORMED (PIN) and ATP-binding cassette protein subfamily B/phosphor-glycoprotein (ABCB/PGP) classes; the latter were shown to depend on interaction with the FKBP42, TWISTED...

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...