Ethnobotanical survey and antibiofilm evaluation of medicinal plants used for the control of tomato bacterial wilt caused by Ralstonia solanacearum
Abstract
IntroductionTomato is an important economic activity for rural populations in Burkina Faso. However, tomato wilt, caused by Ralstonia solanacearum is a serious threat to tomato yields. However, market gardeners use toxic pesticides to combat pests and plant diseases. The aim of this study was to identify medicinal plants traditionally used to treat crop diseases, so as to assess the plant’s potential to inhibit biofilm formation in R. solanacearum.MethodsAn ethnobotanical survey was conducted in the Northen region of Burkina Faso. We collected information on the chemical and biological treatment methods used by market gardeners. Five most frequently cited plants were selected for a biological study. The minimum inhibitory concentration (MIC), antibiofilm activity against R. solanacearum were assessed. The total polyphenol and flavonoid contents of the extracts were quantified.ResultsA random sample of 103 volunteer market gardeners were interviewed. Seven plants and twenty-one pesticides were identified for treating crop diseases, grouped into seven (7) major chemical families. The avermectins were the most frequently cited and with the carbamates are classed as very hazardous. The plants most cited were A. indica (32.03%), N. tabacum (9.7%), K. senegalensis (9.7%), O. americanum (9.7%) and C. chinense (9.7%). O. americanum exhibited the most significant antibacterial activity, against strains 1743(12.5 mg/mL), OH19 (12.5 mg/mL) and B28 (25 mg/mL). Other extracts showed MIC values ≥50 mg/mL against all strains except OH19 for N. tabacum (25 mg/mL) and K. senegalensis (12.5 mg/mL). In addition, A. indica (63.33%), O. americanum (56.53%), C. chinense (54.8%), and N. tabacum (51.73%) presented the significative antibiofilm activities. K. senegalensis extract, which lack flavonoids, have shown no significant antibiofilm effect. O. americanum extract, rich in flavonoids (1. 93 ± 0.61 μg QE/100 mg) exhibited a significant antibiofilm inhibition.ConclusionThe significant antibiofilm effect of C. chinense, O. americanum, A. indica, and N. tabacum suggests that these plants are a promising alternative in the fight against R. solanacearum.
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BibTeX
@article{ouedraogo2026ethnobotanical,
title = {{Ethnobotanical survey and antibiofilm evaluation of medicinal plants used for the control of tomato bacterial wilt caused by Ralstonia solanacearum}},
author = {Safiétou Ouédraogo and Pierre Alexandre Eric Djifaby Sombié and Oumarou Traoré and Eli Compaoré and Vincent Ouedraogo and Martin Kiendrebeogo},
journal = {Frontiers in Microbiology},
year = {2026},
month = nov,
doi = {10.3389/fmicb.2026.1968179},
url = {https://www.frontiersin.org/articles/10.3389/fmicb.2026.1968179},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Ethnobotanical survey and antibiofilm evaluation of medicinal plants used for the control of tomato bacterial wilt caused by Ralstonia solanacearum
AU - Safiétou Ouédraogo
AU - Pierre Alexandre Eric Djifaby Sombié
AU - Oumarou Traoré
AU - Eli Compaoré
AU - Vincent Ouedraogo
AU - Martin Kiendrebeogo
PY - 2026
DA - 2026/11/09
JO - Frontiers in Microbiology
DO - 10.3389/fmicb.2026.1968179
UR - https://www.frontiersin.org/articles/10.3389/fmicb.2026.1968179
AB - IntroductionTomato is an important economic activity for rural populations in Burkina Faso. However, tomato wilt, caused by Ralstonia solanacearum is a serious threat to tomato yields. However, market gardeners use toxic pesticides to combat pests and plant diseases. The aim of this study was to identify medicinal plants traditionally used to treat crop diseases, so as to assess the plant’s potential to inhibit biofilm formation in R. solanacearum.MethodsAn ethnobotanical survey was conducted in the Northen region of Burkina Faso. We collected information on the chemical and biological treatment methods used by market gardeners. Five most frequently cited plants were selected for a biological study. The minimum inhibitory concentration (MIC), antibiofilm activity against R. solanacearum were assessed. The total polyphenol and flavonoid contents of the extracts were quantified.ResultsA random sample of 103 volunteer market gardeners were interviewed. Seven plants and twenty-one pesticides were identified for treating crop diseases, grouped into seven (7) major chemical families. The avermectins were the most frequently cited and with the carbamates are classed as very hazardous. The plants most cited were A. indica (32.03%), N. tabacum (9.7%), K. senegalensis (9.7%), O. americanum (9.7%) and C. chinense (9.7%). O. americanum exhibited the most significant antibacterial activity, against strains 1743(12.5 mg/mL), OH19 (12.5 mg/mL) and B28 (25 mg/mL). Other extracts showed MIC values ≥50 mg/mL against all strains except OH19 for N. tabacum (25 mg/mL) and K. senegalensis (12.5 mg/mL). In addition, A. indica (63.33%), O. americanum (56.53%), C. chinense (54.8%), and N. tabacum (51.73%) presented the significative antibiofilm activities. K. senegalensis extract, which lack flavonoids, have shown no significant antibiofilm effect. O. americanum extract, rich in flavonoids (1. 93 ± 0.61 μg QE/100 mg) exhibited a significant antibiofilm inhibition.ConclusionThe significant antibiofilm effect of C. chinense, O. americanum, A. indica, and N. tabacum suggests that these plants are a promising alternative in the fight against R. solanacearum.
SN - 1664-302X
ER -