Essential plant oils in reducing the intensity of soft rot in Chinese cabbage

Guerra, Myrzânia de Lira; Guerra, Yrlânia de Lira; Souza, Elineide Barbosa de; Mariano, Rosa de Lima Ramos

doi:10.1590/s1806-66902014000400014

Cited by 5 publications

(6 citation statements)

References 11 publications

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“…EOs employed in phytopathogen control are generally used at concentrations ranging from 0.1 to 1% (ALVES et al 2014;GUERRA et al 2014;HUANG;LAKSHMAN, 2010;SILVA et al, 2012a). The higher these concentrations, the more phytotoxicity they might cause, which precludes their use in the alternative control of plant diseases.…”

Section: Resultsmentioning

confidence: 99%

“…This chemical composition might be determined by cultivation conditions, climate, extraction method, harvest time, and organ harvested (BURT, 2004;FALEIRO et al, 2003), and a different chemical composition might take on different bioactive properties (TORRAS et al, 2007). Guerra et al (2014) and Silva et al (2012a) did not observe a direct effect of sweet orange (Citrus sinensis L.) oil at a 0.5% concentration on Pcc. These results corroborate those obtained for sour orange oil at 0.75% in our study.…”

Section: Resultsmentioning

confidence: 99%

“…To determine potential phytotoxicity and choose the concentrations to be used, the 10 EOs were previously tested at concentrations of 0; 0.25; 0.50; 0.75 and 1.00%, obtained by dilution in sterilized distilled water (SDW) mixed with Tween 20 (1:1). development or color up to 48 hours after treatment application (GUERRA et al, 2014). Experiments were carried out in a completely randomized factorial block design 10 x 5, comprised of 10 OEs and five concentrations.…”

Section: Essential Oils (Eos) and Test For Phytotoxicitymentioning

confidence: 99%

“…Several previous studies have shown that essential oils can be used in the management of soft rot caused by Pectobacterium species, such as P. carotovorum subsp. carotovorum (Jones) Haubenet al (Pcc) in chinese cabbage (GUERRA et al, 2014) and lettuce (Lactuca sativa L.) (SILVA et al, 2012a). Positive in vitro results of essential oils were also obtained for Pcc (COSTA et al 2008a;2008b;FERNÁNDEZ et al 2014;JEONG et al 2009;SOTELO-BOYÁS et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Essential oils in the management of soft rot of kale in the brazilian semiarid region

et al. 2020

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The aim of this study was to analyze the effect of essential oils on the control of soft rot of kale. Clove essential oil at 0.25%, lemongrass and palmarosa essential oils at 0.5%, melaleuca and orange essential oils at 0.75%, bergamot, rosemary, sage and ginger essential oils at 1% were evaluated for the in vitro inhibition of Pectobacterium carotovorum subsp. brasiliensis (Pcb) and control of soft rot of kale, sprayed 72 hours before or seven hours after inoculation. Clove, citronella, bergamot, rosemary, palmarosa, sage, melaleuca, and lemongrass oils completely inhibited the growth of Pcb. Lemongrass oil (0.5%) caused 0% of disease incidence (INC), providing 100% of disease control in both periods of inoculation. Clove oil (0.25%) showed a lower INC (25%) when applied after inoculation, providing a control percentage of 71.42%. The lemongrass and clove essential oils were analyzed by GC/FID (Gas Chromatography – Flame Ionization Detector) and by GC/MS (Gas Chromatography /Mass Spectrometer). The major components were eugenol (91,9%) for clove oil and citral, isometric mixture of neral (34,1%) and geranial (42,9%) for lemongrass oil. The Minimum inhibitory concentration (MIC) of lemongrass, clove oils and their major components (citral and eugenol, respectively) was determined by using a broth macrodilution technique, as well as they were evaluated at different concentrations on the control of soft rot of kale, sprayed according descriptions above. The MIC was 0.03125% for citral, and 0.0625 and 0.125% for lemongrass and clove oils, respectively. Eugenol didn't show MIC. Lemongrass oil at 0.125% (post-inoculation) and citral at 0.125% (pre and post-inoculation) provided the highest percentages of disease control (33.33, 50, and 100%, respectively). Clove oil at 0.125% (post-inoculation) showed better effectiveness than eugenol (0.25%), providing a percentage of disease control of 16.67%. Lemongrass and clove essential oils were the most effective in control of soft rot of kale, suggesting that these oils have a potential to be used as antibacterial agents.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Essential Oils (Eos) and Test For Phytotoxicitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Essential oils in the management of soft rot of kale in the brazilian semiarid region

et al. 2020

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“…Já a área abaixo da curva de progresso da doença (AACPD) foi reduzida pelos óleos de bergamota cravo, citronela e melaleuca. Mais recentemente, Guerra et al (2014), avaliando o efeito de OEs na redução da podridão-mole em couve-chinesa, verificaram que os OEs de bergamota (Citrus bergamia Risso et Poiteau), capim-limão, copaíba (Copaifera officinalis), eucalipto citriodora, eucalipto globulus, ervadoce, gengibre, hortelã (Mentha piperita L.), laranja-doce, limão e sálvia-esclaréia reduziram significativamente o período de incubação e a área abaixo da curva de progresso da doença.…”

Section: Concentrações Crescimento (Log Ufc/ml) Bergamotaunclassified

Óleos Essenciais No Manejo Da Podridão Mole Em Pimentão / Essential Oils in the Management of Soft Rot in Bell Pepper

Almeida

Neto

Barroso

et al. 2020

BJD

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Laboratory Efficacy of Essential Oils Against Pectobacterium carotovorum Subsp. carotovorum and Pectobacterium atrosepticum Causing Soft Rot of Potato Tubers

Jílková,

Víchová,

Holková

et al. 2024

Potato Res.

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The antibacterial activity of essential oils (EOs) from Carum carvi, Cinnamomum zeylanicum, Cuminum cyminum, Eugenia caryophyllus, Foeniculum vulgare, Melaleuca alternifolia, Mentha × piperita, Origanum vulgare, Rosmarinus officinalis and Thymus vulgaris was tested against Pectobacterium carotovorum subsp. carotovorum (Pcc) and Pectobacterium atrosepticum (Pa), which cause soft rot of potato tubers. In disc diffusion, minimum inhibitory concentration and minimum bactericidal concentration (MBC) tests, cinnamon EO was found to be most effective against both bacteria. The inhibition zones ranged from 20.46 to 29.58 mm for a concentration of 100 μL/mL. The minimum inhibitory concentration was 0.5 μL/mL, and MBC was between 0.5 and 5 μL/mL. The higher sensitivity of bacteria was manifested in clove (Pcc and Pa), mint (Pcc), oregano (Pa) and thyme (Pa) EOs. Rosemary EO was the least effective. The results of the in vivo test were not entirely consistent with those of the in vitro tests. The most significant antibacterial effect was achieved with mint EO. The treatment of potato tuber discs with mint EO at a concentration of 3 μL/mL for Pcc and 3–10 μL/mL for Pa was 100% effective. The efficacy of the essential oils of caraway (5–10 μL/mL), thyme (10 μL/mL) and oregano (5 μL/mL) also ranged from 95.7 to 99.7%. Based on the results of the in vivo test, it may be recommended that mint EO and potentially caraway, oregano and thyme EOs be further tested for pickling potato tubers against bacteria of the genus Pectobacterium.

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Essential plant oils in reducing the intensity of soft rot in Chinese cabbage

Cited by 5 publications

References 11 publications

Essential oils in the management of soft rot of kale in the brazilian semiarid region

Essential oils in the management of soft rot of kale in the brazilian semiarid region

Óleos Essenciais No Manejo Da Podridão Mole Em Pimentão / Essential Oils in the Management of Soft Rot in Bell Pepper

Laboratory Efficacy of Essential Oils Against Pectobacterium carotovorum Subsp. carotovorum and Pectobacterium atrosepticum Causing Soft Rot of Potato Tubers

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