Effect of Allium fistulosum extract on Ralstonia solanacearum populations and tomato bacterial wilt

Deberdt Peninna, Perrin Benjamin, Coranson Beaudu Régine, Duyck Pierre François, Wicker Emmanuel. 2012. Effect of Allium fistulosum extract on Ralstonia solanacearum populations and tomato bacterial wilt. Plant Disease, 96 (5) : 687-692.

Quartile : Q2, Sujet : PLANT SCIENCES

Résumé : To control bacterial wilt (Ralstonia solanacearum, phylotype IIB/4NPB), the antimicrobial effect of Allium fistulosum aqueous extract was assessed as a preplant soil treatment. Three concentrations of extract (100, 50, and 25%, 1:1 [wt/vol]) were evaluated by in vitro inhibition assay and in vivo experiments in a growth chamber. In vitro, A. fistulosum (100 and 50%) suppressed growth of R. solanacearum. Preplant treatment of the soil with A. fistulosum extract significantly reduced the R. solanacearum populations. No pathogen was detected in the soil after treatment with 100% concentrated extract from the third day after application until the end of the experiment. A. fistulosum also significantly reduced the incidence of tomato bacterial wilt. In the untreated control, the disease affected 61% of the plants whereas, with 100 and 50% extracts, only 6 and 14% of the plants, respectively, were affected. These results suggest that A. fistulosum extracts could be used in biocontrol-based management strategies for bacterial wilt of tomato.

Mots-clés Agrovoc : Ralstonia solanacearum, Allium fistulosum, extrait d'origine végétale, lutte biologique, bactéricide, traitement du sol, contrôle de maladies, expérimentation in vivo, expérimentation in vitro, flétrissement

Mots-clés géographiques Agrovoc : Martinique, France

Classification Agris : H20 - Maladies des plantes

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Deberdt Peninna, CIRAD-BIOS-UMR AGAP (GLP) ORCID: 0000-0001-9349-8335
• Perrin Benjamin, CIRAD-PERSYST-UPR HortSys (MTQ)
• Coranson Beaudu Régine, CIRAD-PERSYST-UPR HortSys (MTQ) ORCID: 0009-0004-1310-2118
• Duyck Pierre François, CIRAD-PERSYST-UPR Systèmes de culture bananes et ananas (MTQ) ORCID: 0000-0001-5484-1970
• Wicker Emmanuel, CIRAD-BIOS-UMR PVBMT (REU) ORCID: 0000-0003-0927-7404

Source : Cirad - Agritrop (https://agritrop.cirad.fr/563986/)

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