A5029682677- Plant-Microbe Interactions and Immunity
- Legume Nitrogen Fixing Symbiosis
- Nematode management and characterization studies
- Polysaccharides and Plant Cell Walls
- Plant Parasitism and Resistance
- Agronomic Practices and Intercropping Systems
- Antimicrobial Peptides and Activities
- Plant Pathogens and Fungal Diseases
- Plant Reproductive Biology
- Plant Gene Expression Analysis
- Plant and Biological Electrophysiology Studies
- Plant biochemistry and biosynthesis
- Plant Pathogenic Bacteria Studies
- Mycorrhizal Fungi and Plant Interactions
- Plant tissue culture and regeneration
- Enzyme Production and Characterization
- Vibrio bacteria research studies
- Plant Molecular Biology Research
- Soybean genetics and cultivation
- Plant nutrient uptake and metabolism
- Photosynthetic Processes and Mechanisms
- Magnetic and Electromagnetic Effects
- Salmonella and Campylobacter epidemiology
- Insect Resistance and Genetics
- Studies on Chitinases and Chitosanases
University of Tübingen
2016-2025
Laboratoire des Interactions Plantes Micro-Organismes
2013-2023
Institute of Plant Molecular Biology
2019-2022
Université de Toulouse
2011-2016
Centre National de la Recherche Scientifique
2011-2016
Institut National de la Recherche Agronomique
2012-2015
Laboratoire de Recherche en Sciences Végétales
2011-2013
Université Toulouse III - Paul Sabatier
2011-2013
Interactions Arbres-Microorganismes
2010-2013
Ludwig-Maximilians-Universität München
2002-2010
Recognition of microbial patterns by host pattern recognition receptors is a key step in immune activation multicellular eukaryotes. Peptidoglycans (PGNs) are major components bacterial cell walls that possess immunity-stimulating activities metazoans and plants. Here we show PGN sensing immunity to infection Arabidopsis thaliana requires three lysin-motif (LysM) domain proteins. LYM1 LYM3 plasma membrane proteins physically interact with PGNs mediate sensitivity structurally different from...
This study focuses on the question how and where information acquired by FLS2 perception of flg22 is transformed into electrical signals crucial for generation local systemic defense responses. In Arabidopsis thaliana Vicia faba leaves, density was high in epidermis vascular parenchyma, low mesophyll, absent sieve elements (SEs). Aequorin-based examinations disclosed dual cytosolic Ca 2+ peaks shortly after application, which corresponded with two voltage shifts from to SEs. These were...
A successful defense against potential pathogens requires that a host organism is able to discriminate between self and nonself structures. Soybean (Glycine max L.) exploits specific molecular pattern, 1,6-β-linked 1,3-β-branched heptaglucoside (HG), present in cell walls of the oomycetal pathogen Phytophthora sojae, as signal compound eliciting onset reactions. The high affinity HG-binding site contained β-glucan-binding protein (GBP), which turn part proposed receptor complex. ability...
4‐Coumarate:CoA ligase (4CL) is involved in the formation of coenzyme A thioesters hydroxycinnamic acids that are central substrates for subsequent condensation, reduction, and transfer reactions biosynthesis plant phenylpropanoids. Previous studies 4CL appear to suggest many isoenzymes functionally equivalent supplying various branches phenylpropanoid biosyntheses. In contrast, divergent members a gene family were identified soybean ( Glycine max L.). We isolated three structurally distinct...
Background Ginkgo biloba (Ginkgoaceae) is one of the most ancient living seed plants and regarded as a fossil. G. has broad spectrum resistance or tolerance to many pathogens herbivores because presence toxic leaf compounds. Little known about early late events occurring in upon herbivory. The aim this study was assess whether herbivory by generalist Spodoptera littoralis able induce signaling direct defense evaluating responses. Methodology/Principal Findings Early responses mechanically...
While chitooligosaccharides (COs) derived from fungal chitin are potent elicitors of defense reactions, structurally related signals produced by certain bacteria and fungi, called lipo-chitooligosaccharides (LCOs), play important roles in the establishment symbioses with plants. Understanding how plants distinguish between friend foe through perception these is a major challenge. We report synthesis range COs LCOs, including photoactivatable probes, to characterize membrane protein legume...
Summary Plant ‐specific lysin‐motif receptor‐like kinases (LysM‐RLKs) are implicated in the perception of N ‐acetyl glucosamine‐containing compounds, some which important signal molecules plant−microbe interactions. Among these, both lipo‐chitooligosaccharides (LCOs) and chitooligosaccharides (COs) proposed as arbuscular mycorrhizal (AM) fungal symbiotic signals. COs can also activate plant defence, although there scarce data about CO production by pathogens, especially nonfungal pathogens....
In plants, antimicrobial immune responses involve the cellular release of anions and are responsible for closure stomatal pores. Detection microbe-associated molecular patterns (MAMPs) by pattern recognition receptors (PRRs) induces currents mediated via slow-type (S-type) anion channels a yet not understood mechanism. Here, we show that to fungal chitin is conferred major PRRs recognition, LYK5 CERK1, receptor-like cytoplasmic kinase PBL27, SLAH3 channel. PBL27 has capacity phosphorylate...
Cell wall integrity (CWI) maintenance is central for plant cells. Mechanical and chemical distortions, pH changes, breakdown products of cell polysaccharides activate plasma membrane-localized receptors induce appropriate downstream responses. Microbial interactions alter or destroy the structure wall, connecting CWI to immune Cellulose major polysaccharide in primary secondary wall. Its generates short-chain cellooligomers that Ca2+-dependent We show these responses require malectin...
Plants and animals detect biomolecules termed microbe-associated molecular patterns (MAMPs) induce immunity. Agricultural production is severely impacted by pathogens which can be controlled transferring immune receptors. However, most studies use a single MAMP epitope the impact of diverse multicopy MAMPs on induction unknown. Here, we characterized landscape from five proteinaceous across 4,228 plant-associated bacterial genomes. Despite diversity sampled, natural variation was constrained...
The ability of legumes to recognize and respond beta-glucan elicitors by synthesizing phytoalexins is consistent with the existence a membrane-bound beta-glucan-binding site. Related proteins approximately 75 kDa corresponding mRNAs were detected in various species which beta-glucans. cDNAs for bean soybean cloned. deduced 75-kDa are predominantly hydrophilic constitute unique class glucan-binding no currently recognizable functional domains. Heterologous expression protein tomato cells...
N-acetylglucosamine-based saccharides (chitosaccharides) are components of microbial cell walls and act as molecular signals during host-microbe interactions. In the legume plant Medicago truncatula, perception lipochitooligosaccharide produced by symbiotic rhizobia arbuscular mycorrhizal fungi involves Nod Factor Perception (NFP) lysin motif receptor-like protein leads to activation so-called common pathway. rice Arabidopsis, receptors involved in chitooligosaccharides released pathogenic...
Oxylipins of the jasmonate pathway and synthetic functional analogs have been analyzed for their elicitor-like activities in an assay based on induced accumulation glyceollins, phytoalexins soybean (Glycine max L.), cell suspension cultures this plant. Jasmonic acid (JA) its methyl ester showed weak phytoalexin-inducing activity when compared to early biosynthetic precursor, 12-oxo-phytodienoic (OPDA), as well bacterial phytotoxin coronatine certain 6-substituted indanoyl-L-isoleucine...
LYR3 [LysM (lysin motif) receptor-like kinase 3] of Medicago truncatula is a high-affinity binding protein for symbiotic LCO (lipo-chitooligosaccharide) signals, produced by rhizobia bacteria and arbuscular mycorrhizal fungi. The present study shows that from several other legumes, but not two Lupinus species which are incapable forming the symbiosis, bind LCOs with high affinity discriminate them COs (chitooligosaccharides). biodiversity these proteins lack to were used identify features...
The geomagnetic field (GMF) is one of the environmental stimuli that plants experience continuously on Earth; however, actions GMF are poorly understood. Here, we carried out a time-course microarray experiment to identify genes differentially regulated by in shoot and roots. We also used qPCR validate activity some selected from analysis dose-dependent magnetic experiment. found both roots, suggesting organs can sense GMF. However, 49% were reverse direction these organs, meaning resident...