Research on the Bioactivity of Plant Essential Oils on Armyworm [Mythimna separata (Walker)] Larvae

Wang, Tao; Ren, Yan-Ling; Zhao, Jiong‐Peng; Liu, Yao; Xu, Bin; Yang, Maofa; Zhao, Wanling; Zheng, Xinian; Wang, Juan; Deng, Liuqiong

doi:10.3389/fchem.2022.936873

Cited by 3 publications

(4 citation statements)

References 43 publications

(32 reference statements)

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“…It has been found that lemon EO has potential lethal effects on Lepidoptera pests, and its modes of action include contact-killing, fumigation, repellency, and antifeedant properties. Lemon EO at a concentration of 2% exhibited a 34.2% antifeedant effect, 9.4% contact-killing effect, and 35.33% fumigation effect on the larvae of Lepidoptera pest Mythimna separata [ 24 ]. Additionally, lemon peel EO also showed certain insecticidal effects on the Lepidoptera pest Agrotis ipsilon [ 25 ].…”

Section: Discussionmentioning

confidence: 99%

“…In addition, there can be a synergistic enhancement effect observed in the combination of EOs with pesticides or other EOs. When 2% lemon EO was combined with the insecticide indoxacarb, a synergistic effect was observed [ 24 ]. Lemongrass and patchouli EOs exhibited little acaricidal activity against Tetranychus cinnabarinus , while a combination of pepper EO, mint EO, and avermectin demonstrated a significant synergistic enhancement effect [ 36 ].…”

Section: Discussionmentioning

confidence: 99%

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Plant Essential Oils: Dual Action of Toxicity and Egg-Laying Inhibition on Tetranychus urticae (Acari: Tetranychidae), Unveiling Their Potential as Botanical Pesticides

Zhu,

Wu,

et al. 2024

Plants

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Tetranychus urticae, a prominent pest mite in strawberry and vegetable cultivation in China, has developed escalating resistance due to extensive chemical pesticide application. Consequently, there is an urgent need to identify safe and efficacious methods to reduce resistance development. In this study, 38 commercially available plant essential oils (EOs) were screened for their acaricidal potential and ability to inhibit oviposition. The findings revealed that 13 EOs exhibited notable acaricidal activity, with lemon EO demonstrating the highest toxicity, followed by sage, patchouli, frankincense, lemongrass, palmarosa, and oregano EOs. In addition, 18 EOs displayed significant inhibitory effects on oviposition, with lemon EO exhibiting the highest inhibition rate (99.15%) and inhibition index (0.98). Subsequently, sage, frankincense, clove, lemongrass, oregano, patchouli, myrrh, black pepper, palmarosa, and geranium EOs also showed inhibition rates exceeding 50%. Despite black pepper, clove, myrrh, and oregano EOs demonstrating relatively low toxicity against T. urticae, they exhibited heightened efficacy in inhibiting oviposition and suppressing population expansion. This study conducted a comparative assessment of the acaricidal and oviposition inhibition activities of EOs and their principal constituents, thus providing a theoretical basis for the development of botanical acaricides against T. urticae.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Plant Essential Oils: Dual Action of Toxicity and Egg-Laying Inhibition on Tetranychus urticae (Acari: Tetranychidae), Unveiling Their Potential as Botanical Pesticides

Zhu,

Wu,

et al. 2024

Plants

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“…Citronella essential oil has obvious repellent effects against Aedes aegypti (Diptera: Culex) adult, Thrips tabaci (Thysopidae: Thripidae), and Myzus persicae (Sulzer) (H emiptera: Aphididae) (Suwansirisilp et al, 2013;Pinheiro et al, 2013). Meanwhile, in our pr evious study, we found that some plant essential oils have excellent bioactivity against Lasio derma serricorne (F.) adults and armyworm [Mythimna separata (Walker, 1865)] larvae (Ren et al, 2022;Wang et al, 2022).…”

Section: Introductionmentioning

confidence: 85%

“…The behavioral responses of the six selected plant essential oils with 0.25%, 0.50%, 1.00%, 2.00 %, or 4.00% concentration on S. frugiperda larvae and adults were tested using the methods des cribed by our group (Ren et al, 2022;Wang et al, 2022). The average dwell time (s) was calc ulated as the following formula.…”

Section: Behavioral Response Test Against S Frugiperda Larvae and Adultsmentioning

confidence: 99%

Bioactivity of some plant essential oils against fall armyworm (Spodoptera frugiperda JE Smith) (Lepidoptera: Noctuidae)

Wang,

Zhao,

Ren

et al. 2023

Preprint

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Fall armyworm Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) is a widely distributed and important pest of corn crops. However, the improper use of the conventional synthetic organophosphate and neonicotinoids pesticides to control S. frugiperda has led to resistant populations. Herein, the biological activities of some plant essential oils against S. frugiperda were determined to provide theoretical basis for the biological control of S. frugiperda. Our results showed that peppermint essential oil at 4.00% concentration showed the obvious ovicidal activity (96.00%) against S. frugiperda eggs, and lemon essential oil at 1.00% concentration had the greatest antifeedant activity (99.11%) against S. frugiperda larvae. Meanwhile, patchouli essential oil and patchouli essential oil at 4.00% concentration revealed remarkable fumigation and contact activities against S. frugiperda larvae at 96 h with the inhibition rates of 93.33% and 95.67%, respectively. In addition, the combination of patchouli essential oil and indoxacarb (in a ratio of 5:1) demonstrated the most effective synergistic effect (97.67%) on S. frugiperda larvae at 96 h. Moreover, the average dwell times of rosemary essential oil at 0.50% concentration against S. frugiperda larvae as well as citronella essential oil at 0.25% and 2.00% concentrations, patchouli essential oil at 1.00% and 4.00% concentrations, and lemon essential oil at 0.50% and 1.00% concentrations against both S. frugiperda male and female adults were all 0 s, indicating that some plant essential oils revealed excellent repellent activity against S. frugiperda. These findings could help to guide the development of new insecticides for the biological control of S. frugiperda.

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Four New Furofuran Lignans from Phryma leptostachya Inhibit the Accumulation of Molting Hormones in Armyworm

Zhang,

Cong,

Sun

et al. 2024

IJMS

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Furofuran lignans have been identified as the main substances responsible for the biological activities of the plant genus Phryma. Here, four new phrymarolin-type leptolignans A–D (7–10) and eight previously known lignans were isolated from P. leptostachya. Of these, nine exhibited significant antifeedant activity against armyworm (Mythimna separata) through a dual-choice bioassay, with the EC50 values ranging from 0.58 to 10.08 μg/cm2. In particular, the newly identified lignan leptolignan A (7) showed strong antifeedant activity, with an EC50 value of 0.58 ± 0.34 μg/cm2. Further investigation found that leptolignan A can inhibit the growth and nutritional indicators in the armyworm M. separata. The concentrations of two molting hormones, 20-hydroxyecdysone and ecdysone, were also found to decrease significantly following the treatment of the armyworms with the lignan, implying that the target of the P. leptostachya lignan may be involved in 20-hydroxyecdysone and ecdysone synthesis. These results enrich our knowledge of P. leptostachya metabolite structural diversity, and provide a theoretical basis for the control of armyworm using lignans.

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Research on the Bioactivity of Plant Essential Oils on Armyworm [Mythimna separata (Walker)] Larvae

Cited by 3 publications

References 43 publications

Plant Essential Oils: Dual Action of Toxicity and Egg-Laying Inhibition on Tetranychus urticae (Acari: Tetranychidae), Unveiling Their Potential as Botanical Pesticides

Plant Essential Oils: Dual Action of Toxicity and Egg-Laying Inhibition on Tetranychus urticae (Acari: Tetranychidae), Unveiling Their Potential as Botanical Pesticides

Bioactivity of some plant essential oils against fall armyworm (Spodoptera frugiperda JE Smith) (Lepidoptera: Noctuidae)

Four New Furofuran Lignans from Phryma leptostachya Inhibit the Accumulation of Molting Hormones in Armyworm

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