Effect of antimicrobial peptides and monoterpenes on control of fire blight
Aim of study: Antimicrobial peptides and monoterpenes are safe compounds that have been used for control of many plant diseases. Herein, the effects of two recombinant antibacterial peptides (AMPs) were compared with two monoterpenes for control of Erwinia amylovora directly or via induction of plan...
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Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria
2020-09-01
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Online Access: | https://revistas.inia.es/index.php/sjar/article/view/15629 |
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doaj-bf7d5043ff8b4a0ebd2fe04a277b726b2020-11-25T01:53:21ZengInstituto Nacional de Investigación y Tecnología Agraria y AlimentariaSpanish Journal of Agricultural Research2171-92922020-09-01182e1002e100210.5424/sjar/2020182-156292985Effect of antimicrobial peptides and monoterpenes on control of fire blightMahdi Akhlaghi0Saeed Tarighi1Parissa Taheri2Ferdowsi University of Mashhad, Laboratory of Phytopathology, Dept. Crop Protection, MashhadFerdowsi University of Mashhad, Laboratory of Phytopathology, Dept. Crop Protection, MashhadFerdowsi University of Mashhad, Laboratory of Phytopathology, Dept. Crop Protection, MashhadAim of study: Antimicrobial peptides and monoterpenes are safe compounds that have been used for control of many plant diseases. Herein, the effects of two recombinant antibacterial peptides (AMPs) were compared with two monoterpenes for control of Erwinia amylovora directly or via induction of plant defense enzyme guaiacol peroxidase (GPOD). Area of study: The experiments were performed at the Ferdowsi University of Mashhad (Iran). Material and methods: The central composite design (CCD) method was used to study the effect of mixing the compounds and copper compound (Nordox) in controlling the pathogen. The resistance level was studied on shoots of tolerant (‘Dargazi’) and semi-susceptible (‘Spadona’) pear cultivars treated with the antibacterial compounds. Main results: Thanatin and 1,8-cineole showed the highest and lowest antibacterial effects. All treatments reduced E. amylovora pathogenicity on blossom. The CCD analysis revealed that the best reduction in colony number obtained by mixing Lfc, thanatin, thymol, 1,8-cineole and Nordox at concentrations of 32, 16, 24, 250 and 250 μg/mL. Thymol and 1,8-cineole at 500 μg/mL decreased disease severity significantly compared to that of AMPs. The level of GPOD enzyme in ‘Dargazi’ was higher than in ‘Spadona’. All treatments increased the GPOD levels in both cultivars. Furthermore, resistance level and GPOD ratio were negatively correlated. Research highlights: Antimicrobial peptides showed better effect on growth inhibition of E. amylovora than monoterpenes. Mixing of these peptides and monoterpens at special dosage enhanced their antimicrobial efficacy against E. amylovora; that could represent a new method in control of fire blight disease.https://revistas.inia.es/index.php/sjar/article/view/15629antibacterialbiological controlcentral composite designerwinia amylovoraguaiacol peroxidaseinduced resistance |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mahdi Akhlaghi Saeed Tarighi Parissa Taheri |
spellingShingle |
Mahdi Akhlaghi Saeed Tarighi Parissa Taheri Effect of antimicrobial peptides and monoterpenes on control of fire blight Spanish Journal of Agricultural Research antibacterial biological control central composite design erwinia amylovora guaiacol peroxidase induced resistance |
author_facet |
Mahdi Akhlaghi Saeed Tarighi Parissa Taheri |
author_sort |
Mahdi Akhlaghi |
title |
Effect of antimicrobial peptides and monoterpenes on control of fire blight |
title_short |
Effect of antimicrobial peptides and monoterpenes on control of fire blight |
title_full |
Effect of antimicrobial peptides and monoterpenes on control of fire blight |
title_fullStr |
Effect of antimicrobial peptides and monoterpenes on control of fire blight |
title_full_unstemmed |
Effect of antimicrobial peptides and monoterpenes on control of fire blight |
title_sort |
effect of antimicrobial peptides and monoterpenes on control of fire blight |
publisher |
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria |
series |
Spanish Journal of Agricultural Research |
issn |
2171-9292 |
publishDate |
2020-09-01 |
description |
Aim of study: Antimicrobial peptides and monoterpenes are safe compounds that have been used for control of many plant diseases. Herein, the effects of two recombinant antibacterial peptides (AMPs) were compared with two monoterpenes for control of Erwinia amylovora directly or via induction of plant defense enzyme guaiacol peroxidase (GPOD).
Area of study: The experiments were performed at the Ferdowsi University of Mashhad (Iran).
Material and methods: The central composite design (CCD) method was used to study the effect of mixing the compounds and copper compound (Nordox) in controlling the pathogen. The resistance level was studied on shoots of tolerant (‘Dargazi’) and semi-susceptible (‘Spadona’) pear cultivars treated with the antibacterial compounds.
Main results: Thanatin and 1,8-cineole showed the highest and lowest antibacterial effects. All treatments reduced E. amylovora pathogenicity on blossom. The CCD analysis revealed that the best reduction in colony number obtained by mixing Lfc, thanatin, thymol, 1,8-cineole and Nordox at concentrations of 32, 16, 24, 250 and 250 μg/mL. Thymol and 1,8-cineole at 500 μg/mL decreased disease severity significantly compared to that of AMPs. The level of GPOD enzyme in ‘Dargazi’ was higher than in ‘Spadona’. All treatments increased the GPOD levels in both cultivars. Furthermore, resistance level and GPOD ratio were negatively correlated.
Research highlights: Antimicrobial peptides showed better effect on growth inhibition of E. amylovora than monoterpenes. Mixing of these peptides and monoterpens at special dosage enhanced their antimicrobial efficacy against E. amylovora; that could represent a new method in control of fire blight disease. |
topic |
antibacterial biological control central composite design erwinia amylovora guaiacol peroxidase induced resistance |
url |
https://revistas.inia.es/index.php/sjar/article/view/15629 |
work_keys_str_mv |
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