Evaluation of three antimicrobial peptides mixtures to control the phytopathogen responsible for fire blight disease

article

Mendes, Rafael J.
Sario, Sara
Luz, J.P.
Fagundes, Natália
Teixeira, Cátia
Gomes, Paula
Tavares, Fernando
Santos, Conceição

MDPI

MENDES, R.J. [et al.] (2021) - Evaluation of three antimicrobial peptides mixtures to control the phytopathogen responsible for fire blight disease. Plants. Vol.10:12, 2637. DOI http://hdl.handle.net/10400.11/8448

10.3390/plants10122637

Evaluation of three antimicrobial peptides mixtures to control the phytopathogen responsible for fire blight disease

AlamarBlue reduction
AMPs
BP100
CA-M
Erwinia amylovora
Flow cytometry
Green revolution
Hypersensitive response
RW-BP100
Sustainable control

info:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F133519%2F2017/PT
info:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F138186%2F2018/PT
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50006%2F2020/PT
info:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FBAA-AGR%2F31798%2F2017/PT
info:eu-repo/grantAgreement/EC/H2020/857251/EU

2023-03-28T15:13:33Z
2023-03-28T15:13:33Z
2021

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 RWBP100: 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 M (1:1). Results showed MIC and MBC values between 2.5 and 4 M 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.
info:eu-repo/semantics/publishedVersion

openAccess
http://creativecommons.org/licenses/by/4.0/

eng