Antifungal properties were assessed of water and ethanol extracts from the pan-tropical plants Oxalis barrelieri L., Stachytarpheta cayennensis L., and Euphorbia hirta L. against Fusarium oxysporum f. sp. vasinfectum, Alternaria solani Sorauer, and Rhizoctonia solani Kuhn. The plant extracts inhibited fungal growth in vitro at 1.25-20 mg mL-1, and the degrees of inhibition increased in a dose-dependent manner. Ethanol extracts from the plants inhibited fungal growth by 80-100%, while water extracts showed less antifungal activity, with maximum growth inhibition of 62%. Growth inhibition from ethanol extracts was two- to three-fold greater than for water extracts at equivalent concentrations. Antifungal activity of the extracts varied with their content and composition of phenolics, flavonoids, tannins, and alkaloids. In greenhouse experiments, spraying tomato plants (Solanum lycopersicum L.) with ethanol extract from E. hirta at 2.5 mg mL-1 did not cause phytotoxicity, and increased plant size, when compared to untreated plants. Spraying E. hirta ethanol extract on tomato plants infected by R. solani reduced disease severity up to 80%, when compared to non-sprayed plants. These results demonstrate potential of leaf extracts from E. hirta, O. barrelieri, and S. cayennensis as biofungicides for the control of R. solani, A. solani, and F. oxysporum, which are among the most important causal agents of tomato diseases.

Activity of extracts from three tropical plants towards fungi pathogenic to tomato (Solanum lycopersicum) / Mekam, Pascal Noel; Martini, Serena; Nguefack, Julienne; Tagliazucchi, Davide; Mangoumou, Ghislaine Ndonkeu; Stefani, Emilio. - In: PHYTOPATHOLOGIA MEDITERRANEA. - ISSN 1593-2095. - 58:3(2019), pp. 573-586. [10.14601/Phyto-10891]

Activity of extracts from three tropical plants towards fungi pathogenic to tomato (Solanum lycopersicum)

Mekam, Pascal Noel
Investigation
;
Martini, Serena
Investigation
;
Nguefack, Julienne
Visualization
;
Tagliazucchi, Davide;Stefani, Emilio
Project Administration
2019

Abstract

Antifungal properties were assessed of water and ethanol extracts from the pan-tropical plants Oxalis barrelieri L., Stachytarpheta cayennensis L., and Euphorbia hirta L. against Fusarium oxysporum f. sp. vasinfectum, Alternaria solani Sorauer, and Rhizoctonia solani Kuhn. The plant extracts inhibited fungal growth in vitro at 1.25-20 mg mL-1, and the degrees of inhibition increased in a dose-dependent manner. Ethanol extracts from the plants inhibited fungal growth by 80-100%, while water extracts showed less antifungal activity, with maximum growth inhibition of 62%. Growth inhibition from ethanol extracts was two- to three-fold greater than for water extracts at equivalent concentrations. Antifungal activity of the extracts varied with their content and composition of phenolics, flavonoids, tannins, and alkaloids. In greenhouse experiments, spraying tomato plants (Solanum lycopersicum L.) with ethanol extract from E. hirta at 2.5 mg mL-1 did not cause phytotoxicity, and increased plant size, when compared to untreated plants. Spraying E. hirta ethanol extract on tomato plants infected by R. solani reduced disease severity up to 80%, when compared to non-sprayed plants. These results demonstrate potential of leaf extracts from E. hirta, O. barrelieri, and S. cayennensis as biofungicides for the control of R. solani, A. solani, and F. oxysporum, which are among the most important causal agents of tomato diseases.
2019
58
3
573
586
Activity of extracts from three tropical plants towards fungi pathogenic to tomato (Solanum lycopersicum) / Mekam, Pascal Noel; Martini, Serena; Nguefack, Julienne; Tagliazucchi, Davide; Mangoumou, Ghislaine Ndonkeu; Stefani, Emilio. - In: PHYTOPATHOLOGIA MEDITERRANEA. - ISSN 1593-2095. - 58:3(2019), pp. 573-586. [10.14601/Phyto-10891]
Mekam, Pascal Noel; Martini, Serena; Nguefack, Julienne; Tagliazucchi, Davide; Mangoumou, Ghislaine Ndonkeu; Stefani, Emilio
File in questo prodotto:
File Dimensione Formato  
Mekam et al PhyMed.pdf

Open access

Tipologia: Versione pubblicata dall'editore
Dimensione 799.49 kB
Formato Adobe PDF
799.49 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1201005
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 4
social impact