Evaluation of Three Antimicrobial Peptides Mixtures to Control the Phytopathogen Responsible for Fire Blight Disease
| Autor: | João Pedro Luz, Paula Gomes, Rafael J. Mendes, Fernando Tavares, Conceição Santos, Cátia Teixeira, Sara Sario, Natália Tassi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Hypersensitive response
hypersensitive response RW-BP100 Antimicrobial peptides sustainable control Virulence Plant Science Erwinia Article Microbiology BP100 green revolution CA-M Erwinia amylovora alamarBlue reduction AMPs flow cytometry Ecology Evolution Behavior and Systematics PEAR Ecology biology Botany food and beverages biology.organism_classification Plant disease QK1-989 Fire blight Bacteria |
| Zdroj: | Plants, Vol 10, Iss 2637, p 2637 (2021) Plants; Volume 10; Issue 12; Pages: 2637 Plants |
| ISSN: | 2223-7747 |
| Popis: | Fire blight is a severe bacterial plant disease that affects important chain-of-value fruit trees such as pear and apple trees. This disease is caused by Erwinia amylovora, a quarantine phytopathogenic bacterium, which, although highly distributed worldwide, still lacks efficient control measures. The green revolution paradigm demands sustainable agriculture practices, for which antimicrobial peptides (AMPs) have recently caught much attention. The goal of this work was to disclose the bioactivity of three peptides mixtures (BP100:RW-BP100, BP100:CA-M, and RW-BP100:CA-M), against three strains of E. amylovora representing distinct genotypes and virulence (LMG 2024, Ea 630 and Ea 680). The three AMPs’ mixtures were assayed at eight different equimolar concentrations ranging from 0.25 to 6 μM (1:1). Results showed MIC and MBC values between 2.5 and 4 μM for every AMP mixture and strain. Regarding cell viability, flow cytometry and alamarBlue reduction, showed high reduction (>25%) of viable cells after 30 min of AMP exposure, depending on the peptide mixture and strain assayed. Hypersensitive response in tobacco plants showed that the most efficient AMPs mixtures and concentrations caused low to no reaction of the plant. Altogether, the AMPs mixtures studied are better treatment solutions to control fire blight disease than the same AMPs applied individually. |
| Databáze: | OpenAIRE |
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