A5047872852- Plant-Microbe Interactions and Immunity
- Legume Nitrogen Fixing Symbiosis
- Probiotics and Fermented Foods
- Mass Spectrometry Techniques and Applications
- Mycorrhizal Fungi and Plant Interactions
- Metabolomics and Mass Spectrometry Studies
- Bacterial biofilms and quorum sensing
- Microbial Natural Products and Biosynthesis
- Bacteriophages and microbial interactions
- Photosynthetic Processes and Mechanisms
- Microbial Metabolites in Food Biotechnology
- Plant Pathogenic Bacteria Studies
- Plant Molecular Biology Research
- Enzyme Production and Characterization
- Analytical Chemistry and Chromatography
- Microbial Metabolism and Applications
- Microbial bioremediation and biosurfactants
- Bacterial Identification and Susceptibility Testing
- Fungal Biology and Applications
- Food composition and properties
- Nematode management and characterization studies
- Microbial Community Ecology and Physiology
- Biofuel production and bioconversion
- Silicon Effects in Agriculture
- Polysaccharides Composition and Applications
Gembloux Agro-Bio Tech
2017-2024
University of Liège
2014-2024
UCLouvain
2023
AgroBio
2019
Physiol (Belgium)
2013
Universidad de La Laguna
1999-2000
Phytopathogenic fungi affecting crop and post-harvested vegetables are a major threat to food production storage. To face these drawbacks, producers have become increasingly dependent on agrochemicals. However, intensive use of compounds has led the emergence pathogen resistance severe negative environmental impacts. There also number plant diseases for which chemical solutions ineffective or non-existent as well an increasing demand by consumers pesticide-free food. Thus, biological control...
Bacillus velezensis is considered as model species for plant-associated bacilli providing benefits to its host such protection against phytopathogens. This mainly due the potential secrete a wide range of secondary metabolites with specific and complementary bioactivities. metabolite arsenal has been quite well defined genetically chemically but much remains be explored regarding how it expressed under natural conditions notably can modulated upon interspecies interactions in competitive...
Most isolates belonging to the Bacillus amyloliquefaciens subsp. plantarum clade retain potential produce a vast array of structurally diverse antimicrobial compounds that largely contribute their efficacy as biocontrol agents against numerous plant fungal pathogens. In context, role cyclic lipopeptides (CLPs) has been well-documented but still little is known about impact interactions with other soil-inhabiting microbes on expression these molecules. this work, we wanted investigate...
Rice monoculture in acid sulfate soils (ASSs) is affected by a wide range of abiotic and biotic constraints, including rice blast caused Pyricularia oryzae. To progress towards more sustainable agriculture, our research aimed to screen the biocontrol potential indigenous Bacillus spp. against disease triggering induced systemic resistance (ISR) via root application direct antagonism. Strains belonging B. altitudinis velezensis group could protect ISR. UPLC-MS marker gene replacement methods...
Plant-associated Bacillus velezensis and Pseudomonas spp. represent excellent model species as strong producers of bioactive metabolites involved in phytopathogen inhibition the elicitation plant immunity. However, ecological role these during microbial interspecies interactions way their expression may be modulated under naturally competitive soil conditions has been poorly investigated.
Lantibiotics are heat-stable peptides characterized by the presence of thioether amino acid lanthionine and methyllanthionine. They capable to inhibit growth Gram-positive bacteria, including Listeria monocytogenes, Staphylococcus aureus or Bacillus cereus, causative agents food-borne diseases nosocomial infections. Lantibiotic biosynthetic machinery is encoded gene cluster composed a structural that codes for pre-lantibiotic peptide other genes involved in modifications, regulation, export...
Surfactin, a lipopeptide produced by Bacillus subtilis, is one of the most powerful biosurfactants known. This molecule consists cyclic heptapeptide linked to β-hydroxy fatty acid chain. The isomery and length (FA) chain are responsible for surfactin's activities. In this study, gene codY, which encode global transcriptional regulator lpdV, located in bkd operon (lpdV, bkdAA, bkdAB bkdB genes), last step branched amino (BCAA) degradation acyl-CoA were deleted. influence these deletions on...
Highlights•B. velezensis colonizes the entire mycelial network more efficiently than roots•Bacillus uses fungal hyphae as highways for soil invasion and to colonize new plant•The lipopeptide surfactin plays key roles in chemical ecology of interaction•The microbial partnership enhances systemic resistance tomato against BotrytisSummaryArbuscular mycorrhizal (AM) fungi (e.g., Rhizophagus species) recruit specific bacterial species their hyphosphere. However, interplay mutual benefit this...
In the prospect of novel potential biocontrol agents, a new strain BDI-IS1 belonging to recently described Bacillus nakamurai was selected for its strong in vitro antimicrobial activities against range bacterial and fungal phytopathogens. Genome mining coupled with metabolomics revealed that produces multiple non-ribosomal secondary metabolites including surfactin, iturin A, bacillaene, bacillibactin bacilysin, together some ribosomally-synthesized post-translationally modified peptides...
Kendrick mass defect (KMD) analysis is widely used for helping the detection and identification of chemically related compounds based on exact measurements. We report here use KMD as a criterion filtering complex spectrometry data set. The method allow automated, easy efficient processing, enabling reconstruction 2D distributions families homologous from MSI images. show that filtering, in-house software, suitable robust high resolution (full width at half-maximum, fwhm, m/z 410 20 000) very...
Peanut (Arachis hypogaea L.) is a widespread oilseed crop of high agricultural importance in tropical and subtropical areas. It plays major role the food supply Democratic Republic Congo (DRC). However, one constraint production this plant stem rot (white mold or southern blight) disease caused by Athelia rolfsii which so far controlled mainly using chemicals. Considering harmful effect chemical pesticides, implementation eco-friendly alternatives such as biological control required for...
Due to the necessity of iron for housekeeping functions, nutrition, morphogenesis and secondary metabolite production, siderophore piracy could be a key strategy in soil substrate colonization by microorganisms. Here we report that mutants bacterium Streptomyces coelicolor unable produce desferrioxamine siderophores recover growth when plates were contaminated indoor air spores Penicillium species Engyodontium album. UPLC-ESI-MS analysis revealed HPLC fractions with extracellular...
Bacillus velezensis isolates are among the most promising plant-associated beneficial bacteria used as biocontrol agents. However, various aspects of chemical communication between plant and these beneficials, determining root colonization ability, remain poorly described. Here we investigated molecular basis such interkingdom interaction occurring upon contact its host via sensing pectin backbone homogalacturonan (HG). We showed that B. stimulates key developmental traits a dynamic process...
Pseudomonas isolates from tropical environments have been underexplored and may form an untapped reservoir of interesting secondary metabolites. In this study, we compared cyclic lipopeptide (CLP) diversity in the rhizosphere a cocoyam root rot disease (CRRD) suppressive soil Boteva, Cameroon with those four conducive soils Nigeria. Compared other soils, Boteva andosols were characterized by high silt, organic matter, nitrogen calcium. Besides, at was strains belonging mainly to P. koreensis...
Bacillus velezensis is considered as a model species belonging to the so-called subtilis complex that evolved typically dwell in soil rhizosphere niche and establish an intimate association with plant roots. This bacterium provides protection its natural host against diseases represents one of most promising biocontrol agents. However, molecular basis cross talk this establishes has been poorly investigated. We show here these plant-associated bacteria have polymer-sensing system perceive...
In response to osmotic stress, the yeast Yarrowia lipolytica produces erythritol, a four-carbon sugar alcohol, from erythrose-P, an intermediate of pentose phosphate pathway. Under non-stressing conditions (isotonic environment), produced erythritol is subsequently recycled into erythrose-P that can feed Herein, gene YALI0F01584g was characterized as involved in catabolic Several experimental evidences suggested it encodes erythrulose-1P isomerase converts erythrulose-4P. On basis our...