Effect of geraniol, a plant-based alcohol monoterpene oil, against Meloidogyne javanica

Nasiou, Eleni; Giannakou, Ioannis O.

doi:10.1007/s10658-018-1512-x

Cited by 25 publications

(17 citation statements)

References 23 publications

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“…There was a clear effect on hatching as the concentration was increased to 0.02 v/v and a further significant decrease in egg hatching was observed upon increasing the concentration to 0.5 v/v . The egg hatching inhibition activity tested on egg masses is an indication of either the EO’s or HL’s ability to penetrate the gelatinous matrix and act on nematode eggs [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

The Use of Essential Oil and Hydrosol Extracted from Cuminum cyminum Seeds for the Control of Meloidogyne incognita and Meloidogyne javanica

Pardavella

Daferera

Tselios

et al. 2020

Plants

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The essential oil (EO) and hydrosol (HL) isolated from Cuminum cyminum (cumin) seeds were evaluated against the root-knot nematodes Meloidogyne incognita and M. javanica. The efficacy of extracts on the motility, hatching, and survival in soil of second-stage juveniles (J2s), and the activity on egg differentiation were tested. All J2s were paralyzed after immersion in the EO at 62.5 μL/L concentration for 96 h. Encouraging results were recorded using HL equal to or higher than 10% concentration for both Meloidogyne species tested. More than 70% paralyzed J2s were recorded after immersion for 48 h, while the percentage was increased to higher than 90% after 96 h of immersion. A clear effect on egg differentiation was observed after immersion in EO or HL. A significant decrease in egg differentiation was revealed at even low concentrations of EO while an evident decrease in egg differentiation was recorded after immersion of eggs in 50% HL dilution. Decreased hatching of M. incognita and M. javanica J2s was observed with the increase in concentration. The lowest numbers of hatched J2s were recorded when EO was used at 1000 and 2000 μL/L concentrations. A constant reduction in root-knot nematode J2 hatching was observed upon increasing the concentration of HL from 5% to 50%. The EO of C. cyminum is characterized by the presence of γ-terpinene-7-al (34.95%), cumin aldehydes (26.48), and α-terpinene-7-al (12.77%). The above constituents were observed in HL following the same order as that observed in EO. The components γ-terpinene (11.09%) and ο-cymene (6.56%) were also recorded in EO while they were absent in HL.

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Section: Discussionmentioning

confidence: 99%

The Use of Essential Oil and Hydrosol Extracted from Cuminum cyminum Seeds for the Control of Meloidogyne incognita and Meloidogyne javanica

Pardavella

Daferera

Tselios

et al. 2020

Plants

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“…Geraniol is a wide-spread volatile in tea (C. sinensis). In addition to its great contribution to tea flavor, geraniol is also reported to be a defensive secondary metabolite in plant [49][50][51]. It has been demonstrated to be effective in repelling insects and apparently possessed insecticide properties [52,53].…”

Section: Discussionmentioning

confidence: 99%

Characterization of Terpene Synthase from Tea Green Leafhopper Being Involved in Formation of Geraniol in Tea (Camellia sinensis) Leaves and Potential Effect of Geraniol on Insect-Derived Endobacteria

2019

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When insects attack plants, insect-derived elicitors and mechanical damage induce the formation and emission of plant volatiles that have important ecological functions and flavor properties. These events have mainly been studied in model plants, rather than crop plants. Our study showed that tea green leafhopper (Empoasca (Matsumurasca) onukii Matsuda), a major pest infesting tea attack significantly induced the emission of geraniol from tea leaves, but did not affect the crude enzyme activity of geraniol synthase in tea leaves. An enzyme extract of E. (M.) onukii specifically produced geraniol from geraniol diphosphate. Furthermore, a terpene synthase (EoTPS) was isolated from E. (M.) onukii. This terpene synthase was able to convert geraniol diphosphate to geraniol in vitro. In addition, geraniol had in vitro ability to inhibit the growth of Acinetobacter johnsonii that is endobacterial isolated from E. (M.) onukii. This information illustrates that elicitors from piercing-sucking insects can induce the formation of volatiles from crop plants and advances our understanding of the roles of plant volatiles in the interaction among crops-insects-microorganisms.Biomolecules 2019, 9, 808 2 of 17 and shown to induce the formation and emission of plant volatiles. These elicitors have mainly been identified in chewing insects, and rarely in piercing-sucking insects. This may be because the amount of elicitors produced by small piercing-sucking insects is insufficient for analysis and difficult to obtain [2]. In addition, the first events in the interaction between insects and plants have mainly been studied in model plants, rather than horticultural crop plants.Tea (Camellia sinensis) is an important horticultural crop in almost 30 countries, including China, Japan, India, and Kenya. Abundant volatiles compounds such as fatty acid-derivatives including (Z)-3-hexen-1-ol, (Z)-3-hexenyl acetate, (E)-2-hexenal, and (E)-2-hexenoic acid; volatile phenylpropanoids/benzenoids including benzyl nitrile, benzaldehyde, and indole; and volatile terpenes including geraniol, farnesene, ocimenes, linalool, and nerolidol were found in tea [5,[11][12][13]. These volatile compounds are important quality components of teas and contribute to tea flavor [14]. Among these volatiles, terpenes are major floral and honey flavor-related volatiles [14]. During tea plant growth, many pest insects such as tea green leafhoppers, tea geometrid, tea aphids, smaller tea tortrix, and Kanzawa spider mites attack tea leaves and affect the yield and quality of the crop [13]. In response to these insect attacks, tea plants emit numerous compounds. Insect-induced volatiles may play important roles in defense [11,12]. On the other hand, insect-induced volatiles may change the flavor the tea and increase the tea quality. As a classical example, a famous oolong tea (oriental beauty), which is manufactured from tea leaves infected with tea green leafhoppers, contains characteristic volatile monoterpenes and has a unique ripe fruit and honey aroma [5,15].In our ...

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“…Nematicidal performance of the major components of P. asperum EO, i.e., linalool, citronellol, and geraniol, varied according to the tested nematode species, as they were proved for a strong in vitro and in vivo activity on Meloidogyne species [ 11 , 50 , 55 , 61 ], but only moderately active on the soil saprophytic nematode Caenorhabditis elegans Maupas and the lesion nematode P. penetrans [ 16 ]. A synergistic activity of these three compounds was also suggested by their lower activity on M. incognita compared with the whole P. asperum EO [ 10 ].…”

Section: Nematicidal Activity Of Experimental Eosmentioning

confidence: 99%

Chemical Composition and Nematicidal Properties of Sixteen Essential Oils—A Review

D’Addabbo

Avato

2021

Plants

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Essential oils (EOs) can be a large source of new food-safe and healthy nematicidal products, due to their strong activity on crop pathogens and pests, including phytoparasitic nematodes, as well as to their low environmental persistence. This review summarizes the results from our 10-year studies on chemical features and nematicidal properties of 16 EOs with different botanical origins and compositions, i.e., the EOs from Artemisia herba-alba Asso (Asteraceae), Cinnamomum camphora (L.) J. Presl. and Cinnamomum verum J. Presl. (Lauraceae), Citrus aurantium L., Cinnamomum. sinensis L. Osbeck and Ruta graveolens L. (Rutaceae), Eucalyptus citriodora Hook, Eucalyptus globulus Labill. and Syzygium aromaticum (L.) Marry et Perry (Myrtaceae), Mentha piperita L., Monarda didyma L., Monarda. fistulosa L., Rosmarinus officinalis L. and Thymus satureioides Cosson (Lamiaceae), Pelargonium asperum Ehrh ex Willd (Geraniaceae) and Schinus molle L. (Anacardiaceae). All these EOs were chemically characterized and tested in vitro and/or in vivo for their activity against the phytoparasitic species Meloidogyne incognita Kofoid et White (Chitw.), Pratylenchus vulnus Allen et Jensen and Xiphinema index Thorne et Allen. Toxicity bioassays were conducted by exposing 2nd stage juveniles (J2) of M. incognita, mixed-age specimens of P. vulnus and adult females of X. index to 2–100 μg mL−1 concentrations of EOs or EO’s major constituents for 4–96 h and checking mortality effect after a further 24–72 h permanence in water. Egg hatchability bioassays consisted in exposing (24–48 h) M. incognita egg masses to 500–1000 mg mL−1 EO solutions followed by a 5-week hatching test in water. The in vivo experiments were undertaken in sandy soil strongly infested by M. incognita and treated with different doses of EOs, applied either in water solution or by fumigation. The effects of the treatments on nematode infestation on tomato and in soil were checked at the end of each experiment. Structure-activity relationships, as suggested by the different chemical compositions of tested EOs, were also highlighted. In agreement with literature data, our studies indicated that most of the tested EOs are highly suitable for the formulation of new safe nematicides, though still retarded by the lack of efficient stabilization processes and standardized EOs’ components and extraction techniques.

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Effect of geraniol, a plant-based alcohol monoterpene oil, against Meloidogyne javanica

Cited by 25 publications

References 23 publications

The Use of Essential Oil and Hydrosol Extracted from Cuminum cyminum Seeds for the Control of Meloidogyne incognita and Meloidogyne javanica

The Use of Essential Oil and Hydrosol Extracted from Cuminum cyminum Seeds for the Control of Meloidogyne incognita and Meloidogyne javanica

Characterization of Terpene Synthase from Tea Green Leafhopper Being Involved in Formation of Geraniol in Tea (Camellia sinensis) Leaves and Potential Effect of Geraniol on Insect-Derived Endobacteria

Chemical Composition and Nematicidal Properties of Sixteen Essential Oils—A Review

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