Dual dissection of the molecular dialogue driving the bread wheat - Fusarium graminearum interaction reveals the co-regulation of candidate susceptibility factors and fungal effectors

Fabre A., Vignassa Manon, Urbach Serge, Langin Thierry, Bonhomme Ludovic. 2019. Dual dissection of the molecular dialogue driving the bread wheat - Fusarium graminearum interaction reveals the co-regulation of candidate susceptibility factors and fungal effectors. Molecular Plant-Microbe Interactions, 32 (10S), Résumé : p. 203. Congress of International-Society-for-Molecular-Plant-Microbe-Interactions (IS-MPMI). 18, Glasgow, Royaume-Uni, 14 Juillet 2019/18 Juillet 2019.

Quartile : Q1, Sujet : PLANT SCIENCES / Quartile : Q2, Sujet : BIOTECHNOLOGY & APPLIED MICROBIOLOGY / Quartile : Q2, Sujet : BIOCHEMISTRY & MOLECULAR BIOLOGY

Résumé : Fungal plant diseases are controlled by a complex molecular dialogue that involves pathogen effectors able to manipulate plant susceptibility factors at the earliest stages of the interaction. By probing the wheat-Fusarium graminearum pathosystem, we profiled the co-regulations of the fungal and plant proteins shaping the molecular responses of a 96-hour-long infection's dynamics. While no symptoms were yet detectable, fungal biomass swiftly increased along with an extremely diverse set of secreted proteins and candidate effectors supposed to target key plant organelles. Some showed to be early accumulated during the interaction or already present in spores, otherwise stored in germinating spores and detectable in an in vitro F. graminearum exudate. Wheat responses were swiftly set up and were evidenced before any visible symptom. Significant wheat protein abundance changes co-occurred along with the accumulation of putative secreted fungal proteins and predicted effectors. Regulated wheat proteins were closely connected to basal cellular processes occurring during spikelet ontogeny and particular co- regulation patterns were evidenced between chloroplast proteins and fungal proteins harboring a predicted chloroplast transit peptide. The plant and fungal coordinated responses provide a resourceful set of data and expand our understanding of the wheat-F. graminearum interaction.

Mots-clés Agrovoc : contrôle de maladies, maladie fongique, effecteur moléculaire, maladie des plantes, Fusarium, protéine végétale, développement biologique, réponse de la plante, Gibberella zeae, pouvoir pathogène, réglementation portuaire

Mots-clés géographiques Agrovoc : France

Auteurs et affiliations

• Fabre A., INRA (FRA)
• Vignassa Manon, CIRAD-PERSYST-UMR Qualisud (REU)
• Urbach Serge, CNRS (FRA)
• Langin Thierry, INRA (FRA)
• Bonhomme Ludovic, INRA (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/605462/)

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