Effectiveness of tailocins produced by Pseudomonas fluorescens SF4c in controlling the bacterial-spot disease in tomatoes caused by Xanthomonas vesicatoria
| Autor: | Analía Príncipe, Maricruz Fernandez, Milenka Torasso, Sonia Fischer, Agustina Godino |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Erythrocytes Light 030106 microbiology Xanthomonas vesicatoria Pseudomonas fluorescens Microbiology Ciencias Biológicas 03 medical and health sciences Bacteriocins Solanum lycopersicum Biología Celular Microbiología Xanthomonas Antibiosis Chlorocebus aethiops Animals XANTHOMONAS Vero Cells BACTERIOCIN Plant Diseases Sheep biology Pseudomonas Temperature Bacterial Infections biology.organism_classification Anti-Bacterial Agents Plant Leaves BIOCONTROL 030104 developmental biology Biological Control Agents TAILOICIN TOMATO PSEUDOMONAS CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | Microbiological Research. :94-102 |
| ISSN: | 0944-5013 |
| DOI: | 10.1016/j.micres.2018.05.010 |
| Popis: | The development of alternatives for the use of chemical pesticides for plant disease control is the present-day and ongoing challenge for achieving sustainable agriculture. Pseudomonas fluorescens SF4c, native strain from wheat, produces tailocins (phage-tail-like bacteriocins) with antimicrobial activity against several phytopathogenic strains. We thus investigated the efficacy of foliar application of these bacteriocins to control the bacterial-spot disease in tomato caused by Xanthomonas vesicatoria Xcv Bv5-4a. The disease severity and incidence index were reduced by 44 and 36%, respectively; while the number of viable cells of X. vesicatoria Xcv Bv5-4a decreased after bacteriocin treatment. Furthermore, bacteriocin was effective in reducing bacterial-spot-disease symptoms on tomato fruits even when applied 12 h after infection. Tailocin activity was not affected by abiotic influences such as adjuvant, light and temperature and, biotic factors such as apoplastic-fluids. In contrast, no antibacterial activity of these tailocins was observed when the bacteriocin was exposed to extremely dry conditions. Finally, that no cytotoxic effects on mammalian cells were observed with this representative tailocins is highly significant and demonstrates the safety of such compounds in humans. All these findings indicate that the SF4c tailocins represent an attractive alternative to copper-containing bactericides for use in the control of bacterial spot. Fil: Principe, Analia. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina Fil: Fernandez, Maricruz. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina Fil: Torasso, Milenka. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina Fil: Godino, Agustina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina Fil: Fischer, Sonia Elizabeth. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina |
| Databáze: | OpenAIRE |
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