Persistence and ingestion characteristics of phytochemical volatiles as bio-fumigants in Sitophilus oryzae adults

Sahu, Urvashi; Ibrahim, S. S.; Vendan, S. Ezhil

doi:10.1016/j.ecoenv.2020.111877

Cited by 13 publications

(4 citation statements)

References 20 publications

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“…On the other hand, it is well known that plant EOs have shown both contact-fumigant toxicities/repellency against insects (e.g., Coleoptera, Diptera, etc.) [67][68][69][70][71][72][73][74] and in vitro inhibition of AChE [75][76][77][78][79][80][81]. Then, when the main plant species (containing EOs) with the highest repellent/fumigant capacities against Coleoptera were reviewed, these belonged to the genera Cymbopogon, Ocimum, and Eucalyptus, whose chemical compositions were mainly based on monoterpenoids, e.g., neral/geranial, nerol/geraniol, citronellol/citronellal, eucalyptol or limonene/pinenes [74,[82][83][84][85][86][87][88][89].…”

Section: Discussionmentioning

confidence: 99%

The Repellent Capacity against Sitophilus zeamais (Coleoptera: Curculionidae) and In Vitro Inhibition of the Acetylcholinesterase Enzyme of 11 Essential Oils from Six Plants of the Caribbean Region of Colombia

Muñoz-Acevedo,

González,

Alonso

et al. 2024

Molecules

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The repellent capacity against Sitophilus zeamais and the in vitro inhibition on AChE of 11 essential oils, isolated from six plants of the northern region of Colombia, were assessed using a modified tunnel-type device and the Ellman colorimetric method, respectively. The results were as follows: (i) the degree of repellency (DR) of the EOs against S. zeamais was 20–68% (2 h) and 28–74% (4 h); (ii) the IC50 values on AChE were 5–36 µg/mL; likewise, the %inh. on AChE (1 µg/cm3 per EO) did not show any effect in 91% of the EO tested; (iii) six EOs (Bursera graveolens—bark, B. graveolens—leaves, B. simaruba—bark, Peperomia pellucida—leaves, Piper holtonii (1b*)—leaves, and P. reticulatum—leaves) exhibited a DR (53–74%) ≥ C+ (chlorpyrifos—61%), while all EOs were less active (8–60-fold) on AChE compared to chlorpyrifos (IC50 of 0.59 µg/mL). Based on the ANOVA/linear regression and multivariate analysis of data, some differences/similarities could be established, as well as identifying the most active EOs (five: B. simaruba—bark, Pep. Pellucida—leaves, P. holtonii (1b*)—leaves, B. graveolens—bark, and B. graveolens—leaves). Finally, these EOs were constituted by spathulenol (24%)/β-selinene (18%)/caryophyllene oxide (10%)—B. simaruba; carotol (44%)/dillapiole (21%)—Pep. pellucida; dillapiole (81% confirmed by 1H-/13C-NMR)—P. holtonii; mint furanone derivative (14%)/mint furanone (14%)—B. graveolens—bark; limonene (17%)/carvone (10%)—B. graveolens—leaves.

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Section: Discussionmentioning

confidence: 99%

The Repellent Capacity against Sitophilus zeamais (Coleoptera: Curculionidae) and In Vitro Inhibition of the Acetylcholinesterase Enzyme of 11 Essential Oils from Six Plants of the Caribbean Region of Colombia

Muñoz-Acevedo,

González,

Alonso

et al. 2024

Molecules

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“…However, few studies on the structural deformities caused by T. minuta oil against A. craccivora (Jayaram et al, 2022b) and P. xylostella (Dolma et al, 2021) were reported earlier, which strongly supported the current findings of the present study. Sahu et al (2021) reported that some pure compounds, namely, diallyl disulfide and eucalyptol, resulted in severe damage to the elytra against S. oryzae. It is suggested that the pure phytochemical compounds lead to scales injury, impairment of setae, and disintegration of the epicuticular layer that results in cuticle abrasion and desiccation (Sahu et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

“…Sahu et al (2021) reported that some pure compounds, namely, diallyl disulfide and eucalyptol, resulted in severe damage to the elytra against S. oryzae. It is suggested that the pure phytochemical compounds lead to scales injury, impairment of setae, and disintegration of the epicuticular layer that results in cuticle abrasion and desiccation (Sahu et al, 2021). The penetration of the eucalyptol from rosemary essential oil topically applied against Trichoplusia ni was also evidenced earlier (Tak and Isman, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…However, few studies on the structural deformities caused by T. minuta oil against A. craccivora ( Jayaram et al., 2022b ) and P. xylostella ( Dolma et al., 2021 ) were reported earlier, which strongly supported the current findings of the present study. Sahu et al. (2021) reported that some pure compounds, namely, diallyl disulfide and eucalyptol, resulted in severe damage to the elytra against S. oryzae .…”

Section: Discussionmentioning

confidence: 99%

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Toxicity and synergistic activity of compounds from essential oils and their effect on detoxification enzymes against Planococcus lilacinus

2022

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Mealybug, Planococcus lilacinus Cockerell, is a primary surface-feeding insect pest of fruit and flowering plants and also transmits plant viruses, resulting in economic crop loss. Inappropriate and recurrent use of pesticides for mealybug control results in resistance building and deleterious effects on humans and the environment. Essential oils are the most excellent choice for insecticides. Insecticidal activities of pure compounds of essential oils against P. lilacinus are not reported. The present study aims to study the insecticidal activities of some pure active compounds and their binary mixture’s action by topical application against P. lilacinus. Results showed that the pure compounds of L-limonene, β-myrcene, and ocimene revealed toxicity (each at LD50 = 0.37 µg/insect) after 96 h. The binary mixtures of geraniol + L-menthol and L-limonene + geraniol exhibited synergistic effects (each at LD50 = 0.03 µg/insect) after 96 h. The monoterpenes of ocimene and β-myrcene at the higher concentration of 5,000 ppm substantially inhibited the detoxification enzyme activities of AChE (0.93 and 0.78 mU/mg, respectively) and GST (2.19 and 7.29 nmol/min/ml, respectively) in P. lilacinus after 48 h. SEM analysis reported the significant anomalies on the morphology of abdominal cuticle, setae, and thoracic leg after 96-h treatment with ocimene at 1,250 ppm against P. lilacinus. Based on the results, the tested pure compounds and their combinations can be suggested for the control of mealybugs.

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Physico-chemical stress alters cuticular semiochemical secretions in the red flour beetle, Tribolium castaneum adults

Sahu,

Theertha,

Maslad

et al. 2023

J Pest Sci

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Persistence and ingestion characteristics of phytochemical volatiles as bio-fumigants in Sitophilus oryzae adults

Cited by 13 publications

References 20 publications

The Repellent Capacity against Sitophilus zeamais (Coleoptera: Curculionidae) and In Vitro Inhibition of the Acetylcholinesterase Enzyme of 11 Essential Oils from Six Plants of the Caribbean Region of Colombia

The Repellent Capacity against Sitophilus zeamais (Coleoptera: Curculionidae) and In Vitro Inhibition of the Acetylcholinesterase Enzyme of 11 Essential Oils from Six Plants of the Caribbean Region of Colombia

Toxicity and synergistic activity of compounds from essential oils and their effect on detoxification enzymes against Planococcus lilacinus

Physico-chemical stress alters cuticular semiochemical secretions in the red flour beetle, Tribolium castaneum adults

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