Antimicrobial activity of essential oils and pure oil compounds against soilborne pathogens of vegetables

McMaster, Cameron; Plummer, Kim M.; Porter, Ian; Donald, E. C.

doi:10.1007/s13313-013-0216-0

Cited by 10 publications

(4 citation statements)

References 17 publications

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“…The difference could also be ascribed to the difference in the growth rate of various fungal species, rendering the fungi less or more susceptible to tyrocidine activity (Lewis, 2001). As has been observed for other antifungals (McMaster et al , 2013), we found that the Trc mixture exhibited activity (IC 50 7.5 µg ml −1 and IC max 9.8 µg ml −1 ) against a strain of Tri. atroviride , a fungus that is used in bio-control and seen as beneficial (Papavizas, 1985; Savazzini et al , 2009).…”

Section: Resultssupporting

confidence: 86%

Inhibition of agronomically relevant fungal phytopathogens by tyrocidines, cyclic antimicrobial peptides isolated from Bacillus aneurinolyticus

et al. 2014

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The tyrocidines, a complex of analogous cyclic decapeptides produced by Bacillus aneurinolyticus, exhibited noteworthy activity against a range of phytopathogenic fungi, including Fusarium verticillioides, Fusarium solani and Botrytis cinerea. The activity of the tyrocidine peptide complex (Trc mixture) and purified tyrocidines exhibited minimum inhibition concentrations below 13 mg ml "1 (~10 mM) and was significantly more potent than that of the commercial imidazole fungicide, bifonazole. Although the tyrocidines' activity was negatively influenced by the presence of Ca 2+, it remained unaffected by the presence of Mg 2+ , Na + and K + . Microscopic analysis revealed significant impact on the morphology of F. solani and Bot. cinerea including retarded germination and hyperbranching of hyphae. Studies with membrane-impermeable dyes, SYTOX green and propidium iodide suggested that the main mode of action of tyrocidines involves the disruption of fungal membrane integrity. Because of the tyrocidines' broad spectrum and potent antifungal activity, possible multiple targets reducing the risk of overt resistance and general salt tolerance, they are promising candidates that warrant further investigation as bio-fungicides.

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Section: Resultssupporting

confidence: 86%

Inhibition of agronomically relevant fungal phytopathogens by tyrocidines, cyclic antimicrobial peptides isolated from Bacillus aneurinolyticus

et al. 2014

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“…Although there have been numerous reports on antifungal activities of essential oils under in vitro conditions, efficacy data about antifungal activity of the essential oils towards soilborne fungal pathogens in vivo are limited. A recent study by McMaster et al (2013) showed that thyme, origanum and clove bud essential oils had excellent in vitro antimicrobial activity when mixed with media against mycelial inoculum of several soilborne pathogens isolated from vegetable crops (Pythium irregulare, P. sulcatum, P. aphanidermatum, F. oxysporum, Sclerotinia minor, R. solani). In vivo tests confirmed that fennel and oregano oils at concentrations of 1.5 and 2.0 μl/ml air, respectively, resulted in reduced viability of sclerotia of S. sclerotiorum (Soylu et al, 2007).…”

Section: Essential Oilsmentioning

confidence: 99%

Methods for management of soilborne plant pathogens

Mihajlović

Rekanović

Hrustić

et al. 2017

Pesticidi i fitomedicina

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Soilborne pathogens cause significant economic losses in agricultural production all over the world. These species can survive for many years in the absence of a host plant by forming persistent structures such as microsclerotia, sclerotia, chlamydospores or oospores. Consequently, soilborne diseases are particularly difficult to predict, detect, diagnose and successfully control. Over the past 30 years, a fumigant, methyl bromide, has been widely used for their control in many crops. In 1992, methyl bromide was listed as an ozone-depleting substance under the Montreal Protocol − an international treaty to protect the ozone layer. During the phaseout of methyl bromide, problems generated in agricultural production made it clear that dependence on a single method or a single chemical should be avoided. The objective of this review paper was to summarize the current knowledge about different methods of soilborne disease control including: crop rotation, steam soil disinfection, soil amendments, hydroponics and soilless growing systems, soil solarization, grafting, biological control and use of natural compounds, and chemical control. Positive and negative aspects of all available methods were reviewed. Benefits, achieved by simultaneous application of several methods based on different mechanisms of actions, are discussed.

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“…Monoterpenes have been shown to possess remarkable fungicidal (Cärdenas-Ortega et al, 2005) and bactericidal (Cristani et al, 2007) activities. Studies in relation to the antifungal activities of essential oils against soil borne pathogens are very few (McMaster et al, 2013;Turkolmez and Soylu, 2014). Citral and geraniol are antiseptic and suppress the growth of bacteria and fungi (Ganjewala, 2009).…”

Section: Introductionmentioning

confidence: 99%

Comparative Fungicidal Activity of some Pure and Nanoemulsion Monoterpenes Effects on Soil Borne Plant Pathogenic Fungi

Abdelrasoul

Amer

2018

Journal of Plant Protection and Pathology

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Comparative study between pure and nanoemulsions (NEs) monoterpenes, cinnamaldehyde, citral, geraniol pulegone, and (R)carvone for their fungicidal activity against three of soil borne pathogenic fungi namely, Pythium digitatum, Rhizoctonia solani and Fusarium solani by using poisoned food technique were evaluated. Results indicated that all examined monoterpenes have displayed antifungal activity under different tested concentrations. Further more. NEs-monoterpenes reduced significantly the linear growth of all tested pathogens than pure monoterpenes. NEs citral and geraniol ranked the first for their effective antifungal compounds on the tested fungi with EC 50 values of 31.31 and 49.41 µg/ml on R. solani, 48.21 and 54.16 µg/ml on P. digitatum and 83.61 and 100.75 µg/ml on F. solani, respectively. Carbendazim fungicide was the reference in this study. NEs citral and geraniol were induced effective defense responses in vivo in tomato plants against R. solani at a rate of 1000 mg/L. Determination in the leaves after 0, 1, 3, 7 and 15 days of inoculation for polyphenoloxidase (PPO), peroxidase (POD) as well as total phenolic content activities as defense-related enzymes were measured. A significant increase in PPO, POD activities and total phenol content were detected. Results, also, showed that to reflect the resistance and susceptibility nature of tomato cultivars against the pathogenic fungi, R. solani., POD and PPO activities can be considered as biochemical markers. The obtained results indicated that the elicitor's NEs-citral and geraniol have brought about defense reaction in tomato plants towards the pathogenic fungi. These effective NEs monoterpenes could be effective potentially and environmentally safe to control tomato damping-off disease.

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Antimicrobial activity of essential oils and pure oil compounds against soilborne pathogens of vegetables

Cited by 10 publications

References 17 publications

Inhibition of agronomically relevant fungal phytopathogens by tyrocidines, cyclic antimicrobial peptides isolated from Bacillus aneurinolyticus

Inhibition of agronomically relevant fungal phytopathogens by tyrocidines, cyclic antimicrobial peptides isolated from Bacillus aneurinolyticus

Methods for management of soilborne plant pathogens

Comparative Fungicidal Activity of some Pure and Nanoemulsion Monoterpenes Effects on Soil Borne Plant Pathogenic Fungi

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