Fumigant effect of essential oils on mortality and fertility of thrips Frankliniella occidentalis Perg

Степанычева, Е. А.; Petrova, M. O.; Chermenskaya, T. D.; Pavela, Roman

doi:10.1007/s11356-019-06239-y

Cited by 46 publications

(21 citation statements)

References 38 publications

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“…The antimicrobial activity of essential oils is usually determined by, or ascribed to, major compounds since it is difficult to discriminate among biological activities exerted by compounds occurring in small amounts [ 30 ]. The present work thus brings relevant data that will contribute to further studies on the antifungal activity of essential oils and to applications in several sectors where these mixtures can be employed for microbial [ 30 ] or pest [ 31 ] control. The in-silico prediction of the antifungal activity of the main RTOCs, through the linear QSAR model, showed high potential activity related to the membrane permeability disruption, even though other antifungal mechanisms were predicted at a lesser extent.…”

Section: Discussionmentioning

confidence: 95%

Unravelling the Antifungal Effect of Red Thyme Oil (Thymus vulgaris L.) Compounds in Vapor Phase

et al. 2020

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The aim of this work was to evaluate the antifungal activity in vapor phase of thymol, p-cymene, and γ-terpinene, the red thyme essential oil compounds (RTOCs). The Minimum Inhibitory Concentration (MIC) of RTOCs was determined against postharvest spoilage fungi of the genera Botrytis, Penicillium, Alternaria, and Monilinia, by measuring the reduction of the fungal biomass after exposure for 72 h at 25 °C. Thymol showed the lowest MIC (7.0 µg/L), followed by γ-terpinene (28.4 µg/L) and p-cymene (40.0 µg/L). In the case of P. digitatum ITEM 9569, resistant to commercial RTO, a better evaluation of interactions among RTOCs was performed using the checkerboard assay and the calculation of the Fractional Inhibitory Concentration Index (FICI). During incubation, changes in the RTOCs concentration were measured by GC-MS analysis. A synergistic effect between thymol (0.013 ± 0.003 L/L) and γ-terpinene (0.990 ± 0.030 L/L) (FICI = 0.50) in binary combinations, and between p-cymene (0.700 ± 0.010 L/L) and γ-terpinene (0.290 ± 0.010 L/L) in presence of thymol (0.008 ± 0.001 L/L) (FICI = 0.19), in ternary combinations was found. The synergistic effect against the strain P. digitatum ITEM 9569 suggests that different combinations among RTOCs could be defined to control fungal strains causing different food spoilage phenomena.

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Section: Discussionmentioning

confidence: 95%

Unravelling the Antifungal Effect of Red Thyme Oil (Thymus vulgaris L.) Compounds in Vapor Phase

et al. 2020

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“…exposed insects (Desneux et al, 2007;Stepanycheva et al, 2019;Benelli et al, 2019b;Soares et al, 2019). The EO from S. rebaudiana is not toxic to E. fetida earthworm adults and did not cause any mortality of the earthworms even after two weeks from exposure (Table 4).…”

Section: Toxicity On Non-target Invertebratesmentioning

confidence: 91%

Phytol, (E)-nerolidol and spathulenol from Stevia rebaudiana leaf essential oil as effective and eco-friendly botanical insecticides against Metopolophium dirhodum

Benelli

Pavela

Drenaggi

et al. 2020

Industrial Crops and Products

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“…For example, the essential oils used on Frankliniella occidentalis Perg were obtained from Mentha pulegium and Thymus mastichina, with 50% (and 90%) lethal concentration values of 3.1 (3.8) and 3.6 (4.6) mg L −1 air, respectively; essential oils of M. spicata, M. piperita, T. vulgaris chemotype (CT) carvacrol and T. vulgaris chemotype (CT) thymol inhibited the mycelial growth of Rhizopus stolonifer with inhibition rates of 92.4%, 98.0%, 98.5%, and 9.8%, respectively. [23][24][25][26] Eugenol, 2-methoxy-4-(2-propylene)phenol, is a plant essential oil and the main component of cloves (Syzygium aromaticum). Eugenol is inexpensive and readily available.…”

Section: Introductionmentioning

confidence: 99%

Unraveling the polypharmacology of a natural antifungal product, eugenol, against Rhizoctonia solani

Zhao

Wang

et al. 2021

Pest Management Science

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BACKGROUND: Rice sheath blight caused by Rhizoctonia solani is a devastating disease of rice in China. However, indiscriminate use of chemical fungicides applied to control the disease raise major environmental and food safety issues. Ecofriendly biocontrol alternatives are urgently needed. Eugenol, one of the main ingredients in Syzygium aromaticum, has attracted much attention owing to its antifungal properties. However, its mode of action is still not clear. Herein, the antifungal activity and mode of action of eugenol against R. solani were investigated.RESULTS: Results confirmed that the mycelia of R. solani treated with eugenol shrank and became dehydrated, the cytoplasmic wall separated, and the vacuoles and mitochondria decreased or dissolved. Moreover, we found that eugenol downregulated expression of C-4 methyl sterol oxidase, inhibited synthesis of ergosterol, increased membrane permeability and impaired the transportation of amino acids and glucose across the cell membrane. In addition, eugenol decreased the mitochondrial membrane potential and initiated an oxidative stress reaction by increasing reactive oxygen species and malondialdehyde, which together with membrane damage contribute to the antifungal activity of eugenol. Meanwhile, eugenol might inhibit R. solani by affecting oxidative phosphorylation and the tricarboxylic acid cycle (TCA cycle). CONCLUSION: In view of its multitarget properties against R. solani, eugenol provides an alternative approach to chemical control strategies against rice sheath blight.

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Fumigant effect of essential oils on mortality and fertility of thrips Frankliniella occidentalis Perg

Cited by 46 publications

References 38 publications

Unravelling the Antifungal Effect of Red Thyme Oil (Thymus vulgaris L.) Compounds in Vapor Phase

Unravelling the Antifungal Effect of Red Thyme Oil (Thymus vulgaris L.) Compounds in Vapor Phase

Phytol, (E)-nerolidol and spathulenol from Stevia rebaudiana leaf essential oil as effective and eco-friendly botanical insecticides against Metopolophium dirhodum

Unraveling the polypharmacology of a natural antifungal product, eugenol, against Rhizoctonia solani

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