Contact and fumigant toxicities of monoterpenes and phenylpropenes, and their possible mode of action to oleander aphid

Hussein, Hanna S.; El-Deeb, Dalia A.; Tawfeek, Mohamed E.; Abdelgaleil, Samir A. M.

doi:10.1007/s42690-022-00740-7

Cited by 2 publications

(2 citation statements)

References 27 publications

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“…Strong toxicity of linalool (LC 50 = 2.11 µL/L) and carvone (10.87 µL/L) against Callosobrunchus maculatus has been reported by Oyedeji et al [35]. Hussein et al [36] showed high toxicity against Aphis nerii. The observed insecticidal activity of Mentha EOs in the current study could be related to the synergistic/antagonist effects of the individual components within the EO.…”

Section: Discussionmentioning

confidence: 86%

Mentha spp. Essential Oils: A Potential Toxic Fumigant with Inhibition of Acetylcholinesterase Activity on Reticulitermes dabieshanensis

Wu,

Jin,

Chen

et al. 2023

Plants

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In this study, we analyzed the components of Mentha spp. essential oils (EOs) and evaluated their major constituents and binary combinations against Reticulitermes dabieshanensis. We also determined the activities of esterases (ESTs), glutathione S-transferases (GSTs), and acetylcholinesterase activity (AChE) in treated insects. According to our findings, the most effective oils were those obtained from M. citrata (with the major constituent linalool constituting 45.1%), M. piperita (menthol, 49.1%), and M. spicata (carvone, 69.0%), with LC50 values of 0.176, 0.366, and 0.146 μL/L, respectively. The LC50 values were recorded for linalool (0.303 μL/L), followed by menthol (0.272 μL/L), and carvone (0.147 μL/L). The insecticidal potency increased with binary mixtures of major active constituents, with carvone strongly synergizing the toxicity of linalool and menthol against R. dabieshanensis. Compared to the control, except for M. citrata treated with no difference in α-NA or GST activity, the activities of ESTs and GST in other treatment groups were significantly increased. Additionally, our results found that Mentha spp. EOs and their major constituents inhibited the activity of AChE in vivo and in vitro. Finally, we performed a structure-based virtual screening of linalool, menthol, and carvone to identify that linalool had the greatest potential to bind to the active site of AChE. The present study suggests that Mentha spp. EOs could provide an additional approach for the management of termites over synthetic insecticides.

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Section: Discussionmentioning

confidence: 86%

Mentha spp. Essential Oils: A Potential Toxic Fumigant with Inhibition of Acetylcholinesterase Activity on Reticulitermes dabieshanensis

Wu,

Jin,

Chen

et al. 2023

Plants

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“…This inhibition leads to a slow death that resembles starvation (He et al ., 2011). These phenylpropenes also cause insecticidal activity against oleander aphid, Aphis nerii (Hussein et al ., 2022). In the present study, an increase in the time that aphids took to perform the first probe when feeding on the overexpression of both CmMYB15‐like and Cm4CL2 lines (Figs 3c, 7c), which is a feeding activity independent of lignin amount or cell wall thickness, we suppose that it might be possible that overexpressing CmMYB15‐like and Cm4CL2 could lead to changes in volatile compounds that dissuade aphids from probing and ingesting.…”

Section: Discussionmentioning

confidence: 99%

Molecular module of CmMYB15‐like‐Cm4CL2 regulating lignin biosynthesis of chrysanthemum (Chrysanthemum morifolium) in response to aphid (Macrosiphoniella sanborni) feeding

Zhang

Tian

et al. 2022

New Phytologist

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Lignin is a major component of plant cell walls and a conserved basic defense mechanism in higher plants deposited in response to aphid infection. However, the molecular mechanisms of lignin biosynthesis in response to aphid infection and the effect of lignin on aphid feeding behavior remain unclear.We report that 4-Coumarate:coenzyme A ligase 2 (Cm4CL2), a gene encoding a key enzyme in the lignin biosynthesis pathway, is induced by aphid feeding, resulting in lignin deposition and reduced aphid attack. Upstream regulator analysis showed that the expression of Cm4CL2 in response to aphid feeding was directly upregulated by CmMYB15-like, an SG2-type R2R3-MYB transcription factor.CmMYB15-like binds directly to the AC cis-element in the promoter region of Cm4CL2. Genetic validation demonstrated that CmMYB15-like was induced by aphid infection and contributed to lignin deposition and cell wall thickening, which consequently enhanced aphid resistance in a Cm4CL2-dependent manner.This study is the first to show that the CmMYB15-like-Cm4CL2 module regulates lignin biosynthesis in response to aphid feeding.

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Contact and fumigant toxicities of monoterpenes and phenylpropenes, and their possible mode of action to oleander aphid

Cited by 2 publications

References 27 publications

Mentha spp. Essential Oils: A Potential Toxic Fumigant with Inhibition of Acetylcholinesterase Activity on Reticulitermes dabieshanensis

Mentha spp. Essential Oils: A Potential Toxic Fumigant with Inhibition of Acetylcholinesterase Activity on Reticulitermes dabieshanensis

Molecular module of CmMYB15‐like‐Cm4CL2 regulating lignin biosynthesis of chrysanthemum (Chrysanthemum morifolium) in response to aphid (Macrosiphoniella sanborni) feeding

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