First report of Fusarium oxysporum causing damping‐off on Datura stramonium in France - Institut Agro Dijon - AE
Article Dans Une Revue New Disease Reports Année : 2024

First report of Fusarium oxysporum causing damping‐off on Datura stramonium in France

Lolita Pilet,
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  • PersonId : 1228267
Carole Reibel
  • Fonction : Auteur
  • PersonId : 1228268
Nadine Gautheron
Simon Giuliano
Michel Herbach
  • Fonction : Auteur
Jean-Philippe Guillemin
Christian Steinberg

Résumé

Datura stramonium (jimsonweed, thorn apple) is a toxic, invasive weed of summer crops. It contaminates grains during harvest, causing health problems (Perharič et al., 2013; Mutebi et al., 2022). In July 2022, in a maize plot near Toulouse (France), c. 36 plants of D. stramonium per m2 were counted. One to two plants with crown shrinkage symptoms were detected every 10 m2 (Fig. 1). Fifteen diseased plants were collected. The stem base of each plant was surface disinfected, cut into pieces, and plated on malt extract agar. Fusarium oxysporum-like colonies grown from these fragments were purified by single-spore sub-culturing and preserved in the Microorganisms of Interest for Agriculture and Environment (MIAE) collection (INRAE Dijon, France). Colonies transferred onto potato dextrose agar for macroscopic observations exhibited white aerial mycelium, becoming progressively pink (Fig. 2). Microscopic examination of cultures on carnation leaf agar revealed oval single-celled microconidia and multicellular spindle-shaped macroconidia characteristic of F. oxysporum (Fig. 3; Nelson et al., 1983).

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Agronomie
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hal-04802678 , version 1 (25-11-2024)

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Lolita Pilet,, Carole Reibel, Nadine Gautheron, Véronique Edel-Hermann, Simon Giuliano, et al.. First report of Fusarium oxysporum causing damping‐off on Datura stramonium in France. New Disease Reports, 2024, 50 (2), pp.e12309. ⟨10.1002/ndr2.12309⟩. ⟨hal-04802678⟩
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