References of "Henry, Guillaume"
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See detailPlant defense stimulation by natural isolates of Bacillus depends on efficient surfactin production
Cawoy, Hélène ULg; Mariutto, Martin; Henry, Guillaume et al

in Molecular Plant-Microbe Interactions [=MPMI] (2013)

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See detailPAMPs, MAMPs, DAMPs and others: An update on the diversity of plant immunity elicitors [PAMPs, MAMPs, DAMPs et autres: Mise à jour de la diversité des éliciteurs de l'immunité des plantes]
Henry, Guillaume; Thonart, Philippe ULg; Ongena, Marc ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2012), 16(2), 257-268

Plants possess a broad array of defenses that could be actively expressed in response of pathogenic organisms or parasites but also following beneficial saprophytic microorganisms recognition ... [more ▼]

Plants possess a broad array of defenses that could be actively expressed in response of pathogenic organisms or parasites but also following beneficial saprophytic microorganisms recognition. Specifically, there are compounds derived from these organisms and called elicitors that are perceived by the plant to induce a locally or systemically expressed resistance. The understanding of the physiological and biological basis of these induced immunity mechanisms have greatly advanced over the past years but a deeper investigation of the mechanisms underlying the perception of elicitors is essential to develop novel strategies for pest control. The application of chemical and biological stimulators of plant immune defenses in conventional agriculture is expected to increase within the next years. Because of their organic origin and as they provide means for conferring plant protection in a non-transgenic manner, elicitors of plant immunity have a huge potential as biocontrol products. Through this review, we want to illustrate the diversity of compounds identified as stimulators of the plant immune system and describe the mechanisms by which they could be recognized at the plasma membrane level. [less ▲]

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See detailBacillus lipopeptides as MAMPs for non-pathogenic bacteria perception and defense responses elicitation in plant cells.
Henry, Guillaume; Ongena, MARC ULg; Jourdan, Emmanuel ULg et al

in Bulletin OILB/SROP = IOBC/WPRS Bulletin (2009), 43

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See detailInsights into the Defense-Related Events Occuring in Plant Cells Following Perception of Surfactin-Type Lipopeptide from Bacillus subtilis
Jourdan, Emmanuel ULg; Henry, Guillaume; Duby, F. et al

in Molecular Plant-Microbe Interactions [=MPMI] (2009), 22(4), 456-468

Multiple strains of Bacillus subtilis were demonstrated to stimulate plant defense responses, and cyclic lipopeptides may be involved in the elicitation of this induced systemic resistance phenomenon ... [more ▼]

Multiple strains of Bacillus subtilis were demonstrated to stimulate plant defense responses, and cyclic lipopeptides may be involved in the elicitation of this induced systemic resistance phenomenon. Here, we further investigated molecular events underlying the interaction between wuch lipopeptides and plant cells. Addition of surfactin but not fengycin or iturin in the micromolar range to tobacco cell suspensions induced defense-related early events such as extracellular medium alkalinization coupled with ion fluxes and reactive oxygen species production. Surfactin also stimulated the defense enzymes phenylalanine ammonia lyase and lipoxygenase and modified the pattern of phenolics produced by the elicited cells. The occurence of these surfactin-elicited early events is closely related to Ca2+ influx and dynamic changes in protein phosphorylation but is not associed with any marked phytotoxicity or adverse effect on the integrity and growth potential of the treated tobacco cells. [less ▲]

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See detailThe roles of lipopeptides in the biocontrol activity of Bacillus subtilis
Ongena, MARC ULg; Henry, Guillaume; Thonart, Philippe ULg

in Plant Pathology in the 21st Century, Recent developments in disease management (2009)

Bacillus subtilis species are well-known and extensively-used beneficial rhizobacteria for biocontrol of plant diseases. Their interest arises from their ability to generate a broad array of bioactive ... [more ▼]

Bacillus subtilis species are well-known and extensively-used beneficial rhizobacteria for biocontrol of plant diseases. Their interest arises from their ability to generate a broad array of bioactive metabolites among which three families of cyclic lipopeptides (CLPs). These CLPs display a huge diversity of structures and physico-chemical and biological properties which probably account for an important part of the biocontrol potential of the producing strains. Beside their antimicrobial properties, they are also involved in colonization and motility as well as in the systemic stimulation of immune system of the host plant. We summarize here the current knowledge of CLPs activities and focus on the recent findings in the context of biocontrol [less ▲]

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