Biopesticidal value of selected essential oils against pathogenic fungus, termites, and nematodes

Gupta, Aditi; Sharma, Satyawati; Naik, S. N.

doi:10.1016/j.ibiod.2010.11.018

Cited by 67 publications

(37 citation statements)

References 30 publications

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“…For example, Gupta, Sharma, and Naik (2011) found that the essential oil from S. aromaticum caused mortality rates of M. incognita that were comparable to those found in our study. For example, Gupta, Sharma, and Naik (2011) found that the essential oil from S. aromaticum caused mortality rates of M. incognita that were comparable to those found in our study.…”

Section: Discussionsupporting

confidence: 90%

Nematicidal screening of essential oils and potent toxicity of Dysphania ambrosioides essential oil against Meloidogyne incognita in vitro and in vivo

Barros

Campos

Paula

et al. 2019

Journal of Phytopathology

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It is known that some plant essential oils have pesticide activities. Among the 29 oils evaluated in this study, 14 showed nematicidal activities of 8 to 100% at the concentration of 1,000 μg/ml, compared with a control of 0.01 g/ml Tween 80®. At a lower concentration of 500 μg/ml, only Dysphania ambrosioides oil caused >90% mortality of second‐stage juveniles (J2) of Meloidogyne incognita. The LC50 and LC95 values for D. ambrosioides oil were 307 μg/ml and 580 μg/ml, respectively. M. incognita eggs placed in D. ambrosioides oil solutions had a significant reduction in J2 hatching compared with controls. Therefore, the oil had a toxic effect on both eggs and J2 of M. incognita. This was in contrast to nematicides on the market that act efficiently only on J2. When J2 were placed in D. ambrosioides oil at its LC50 concentration and inoculated onto tomato plants, the reduction in numbers of galls and eggs was 99.5% and 100%, respectively. Dysphania ambrosioides oil applied to the potting substrate of plants at a concentration of 1,100 μg/ml significantly reduced the number of galls and eggs of M. incognita, whereas a concentration of 800 μg/ml only reduced the number of eggs compared with the controls (Tween 80® and water). The main components of the D. ambrosioides oil detected by gas chromatography–mass spectrometry were (Z)‐ascaridole (87.28%), E‐ascaridole (8.45%) and p‐cymene (3.35%), representing 99.08% of the total oil composition. Given its nematicidal activity, D. ambrosioides oil represents an exciting raw material in the search for new bioactive molecules for the pesticide industry.

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Section: Discussionsupporting

confidence: 90%

Nematicidal screening of essential oils and potent toxicity of Dysphania ambrosioides essential oil against Meloidogyne incognita in vitro and in vivo

Barros

Campos

Paula

et al. 2019

Journal of Phytopathology

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“…Chemical analysis of plant essential oils by GC-MS indicated z-citral (30.95%), β-geranial (α-citral) (39.16%) and caryophyllene (3.44%) as the main components in C. citratus oils (Table 2). Gupta et al (2011) reported that citral (77.8%), limonene (4%) and geraniol (2.7%) were the main components in C. citratus oils. Also, borenol (60.06%), caryophyllen oxide (3.98%), β-myrcene (3.57%) and fenchone (3.07%) were identified as the main chemical compounds in O. basilicum oils (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Antifungal Effect of Plant Essential Oils on Controlling Phytophthora Species

Amini

Farhang

Javadi

et al. 2016

The Plant Pathology Journal

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In this study, antifungal activity of essential oils of Cymbopogon citratus and Ocimum basilicum and two fungicides Mancozeb and Metalaxyl-Mancozeb in six different concentrations were investigated for controlling three species of Phytophthora, including P. capsici, P. drechsleri and P. melonis on pepper, cucumber and melon under in vitro and greenhouse conditions, respectively. Under the in vitro condition, the median effective concen- tration (EC50) values (ppm) of plant essential oils and fungicides were measured. In greenhouse, soil infested with Phytophthora species was treated by adding 50 ml of essential oils and fungicides (100 ppm). Disease severity was determined after 28 days. Among two tested plant essential oils, C. citratus had the lowest EC50 values for inhibition of the mycelial growth of P. capsici (31.473), P. melonis (33.097) and P. drechsleri (69.112), respectively. The mean EC50 values for Metalaxyl-Mancozeb on these pathogens were 20.87, 20.06 and 17.70, respectively. Chemical analysis of plant essential oils by GC-MS showed that, among 42 compounds identified from C. citratus, two compounds β-geranial (α-citral) (39.16%) and z-citral (30.95%) were the most abundant. Under the greenhouse condition, Metalaxyl-Mancozeb caused the greatest reduction in disease severity, 84.2%, 86.8% and 92.1% on melon, cucumber, and pepper, respectively. The C. citratus essential oil reduced disease severity from 47.4% to 60.5% compared to the untreated control (p≤0.05). Essential oils of O. basilicum had the lowest effects on the pathogens under in vitro and greenhouse conditions. These results show that essential oils may contribute to the development of new antifungal agents to protect the crops from Phytophthora diseases.

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“…The choice of C. citratus was based on the numerous reports of the biological activity of this plant, which acts as an insecticide (KUMAR et al, 2013), a repellent (KAZEMBE & CHAURUKA, 2012), a molluscicide (OTARIGHO & MORENNIKEJI, 2012) and a nematicide against the pinewood nematode Bursaphelenchus xylophilus (BARBOSA et al, 2010) and the plant nematode Meloidogyne incognita (GUPTA et al, 2011). In a Brazilian study that evaluation the anthelmintic activities of plants, C. citratus was cited as one of the species with more promising results (NERY et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Anthelmintic activity of Cymbopogon citratus against Haemonchus contortus

Macedo

Oliveira

Ribeiro

et al. 2015

Rev. Bras. Parasitol. Vet.

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Parasitic nematodes are of major economic importance in livestock. An alternative for the control of parasites is phytotherapy. This study evaluated the efficacy of Cymbopogon citratus decoction (CcD), C. citratus essential oil (CcEo) and citral against Haemonchus contortus using in vitro egg hatch test (EHT) and larval development test (LDT) and an in vivo test using a Meriones unguiculatus (gerbil) model. The effect of 800 mg/kg CcEo was evaluated in gerbils that had been artificially infected with 5,000 third-stage H. contortus larvae. The effective concentrations required to inhibit 50% (EC50) of egg hatching were 0.46, 0.14 and 0.13 mg/mL for CcD, CcEo and citral, respectively. The EC50 values in the LDT were 5.04, 1.92 and 1.37 mg/mL for CcD, CcEo and citral, respectively. H. contortus population in the group treated with C. citratus essential oil was reduced by 38.5% (P< 0.05) in comparison to the control group. These results suggest that it may be possible to use C. citratus essential oil to control of H. contortus parasite of small ruminant.Keywords: Phytotherapy, anthelmintic, Meriones unguiculatus, in vitro, citral. ResumoO parasitismo por nematoides tem grande importância econômica no rebanho. Uma alternativa para o controle de parasitas é a fitoterapia. Este estudo avaliou a eficácia do decocto de Cymbopogon citratus (DCc), do óleo essencial de C. citratus (OECc) e do citral contra Haemonchus contortus utilizando o teste in vitro de eclosão dos ovos (TEO) e o teste de desenvolvimento larval (TDL) e um teste in vivo com modelo Meriones unguiculatus (gerbil). O efeito de 800 mg/kg de OECc foi avaliado em gerbils infectados artificialmente com 5000 larvas de terceira fase de H. contortus. As concentrações efetivas necessárias para inibir 50% (CE50) da eclosão dos ovos foram 0,46; 0,14 e 0,13 mg/mL para DCc, OECc e citral, respectivamente. Os valores da CE50 no TDL foram de 5,04; 1,92 e 1,37 mg/mL para DCc, OECc e citral, respectivamente. No grupo tratado com óleo de C. citratus a população H. contortus foi reduzida em 38,5% (P < 0,05) em comparação com o grupo controle. Estes resultados sugerem que pode ser possível a utilização de óleo essencial de C. citratus para controle de H. contortus, parasita de pequenos ruminantes.Palavras-chave: Fitoterapia, anti-helmínticos, Meriones unguiculatus, in vitro, citral.

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Biopesticidal value of selected essential oils against pathogenic fungus, termites, and nematodes

Cited by 67 publications

References 30 publications

Nematicidal screening of essential oils and potent toxicity of Dysphania ambrosioides essential oil against Meloidogyne incognita in vitro and in vivo

Nematicidal screening of essential oils and potent toxicity of Dysphania ambrosioides essential oil against Meloidogyne incognita in vitro and in vivo

Antifungal Effect of Plant Essential Oils on Controlling Phytophthora Species

Anthelmintic activity of Cymbopogon citratus against Haemonchus contortus

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