Airborne versus soilborne inoculum: White mould, where do you come from?

Autor: Christel Leyronas, Fabien Halkett, Vincent Faloya
Přispěvatelé: Unité de Pathologie Végétale (PV), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Interactions Arbres-Microorganismes (IAM), Université de Lorraine (UL)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Université de Rennes (UR)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Rennes Angers, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Cluster of Excellence ARBRE, CASDAR grant of the French Ministry of Agriculture (SCLEROLEG Project), Groupement d'Intérêt Scientifique pour la Production Intégrée des Cultures légumières (GIS PIClég), British society of plant pathology, ANR-18-CE32-0001,Clonix2D,Les conséquences génétiques de reproduction partiellement clonale dans les populations colonisant de nouveaux territoires(2018), ANR-11-LABX-0002,ARBRE,Recherches Avancées sur l'Arbre et les Ecosytèmes Forestiers(2011)
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Plant Pathology
Plant Pathology, 2023, 72 (4), pp.651-839. ⟨10.1111/ppa.13699⟩
ISSN: 0032-0862
1365-3059
Popis: International audience; Identifying the sources of fungal inoculum that induces epidemics is instrumental to managing crop health in a more efficient way by implementing prophylactic methods and by using better targeted biocontrol and fungicide applications. For some phytopathogenic fungi, this identification is hampered by the multiplicity of inoculum types. This is the case for Sclerotinia sclerotiorum, the agent of white mould, which can produce ascospores disseminated via the atmosphere, sclerotia stored in the soil and mycelium in plant debris of a large variety of hosts. The present study aims to assess the relative importance of airborne and soilborne inocula in white mould disease development and its persistence across two crop seasons. S. sclerotiorum isolates were collected from air, soil and carrot plants during two crop seasons in south-western France and genotyped with 16 microsatellite markers. Among the 490 isolates, 162 clonal lineages were identified. The genetic characteristics did not differ significantly among isolates collected from air, soil and carrots. The epidemics of white mould on carrots were initiated either by airborne inoculum or by soilborne inoculum. It also appears that some isolates from airborne inoculum persisted from year to year.
Databáze: OpenAIRE
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