Toxicity of Cinnamomum spp. essential oil to Tuta absoluta and to predatory mirid

de Figueiredo, Karolina Gomes; de Paiva Silva, Gabriel Tadeu; Passos, Luis Clepf; Alves, Dejane Santos; Biondi, Antonio; Carvalho, Geraldo Andrade

doi:10.1007/s10340-023-01719-0

Cited by 3 publications

(2 citation statements)

References 91 publications

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“…An egg mass of T. absoluta was obtained from the local tomato field (12.106527, 78.136139) according to the methods of de Figueiredo et al (2023) . The egg mass was maintained at a temperature of 28 ± 2°C and a relative humidity of 75–86%, with a 14-h light and 10-h dark photoperiod, as described by de Figueiredo et al (2023) and Eski et al (2023) . Newly emerged larvae were fed young tomato leaves under laboratory conditions.…”

Section: Methodsmentioning

confidence: 99%

Biocontrol effects of chemical molecules derived from Beauveria bassiana against larvae of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)

Vivekanandhan,

Swathy,

Alahmadi

et al. 2024

Front. Microbiol.

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In this study, we conducted tests on the isolation, identification, characterization, and extraction of chemical molecules from Beauveria bassiana against Tuta absoluta larvae. The enzyme responses of T. absoluta to the crude extract were examined 24 h after treatment, and the number of dead larvae was calculated 24 and 48 h after treatment. Molecular docking studies were conducted to assess the interaction of important molecules with the acetylcholinesterase enzyme. The larvicidal activity of crude chemicals from fungi was high 24 h after treatment, with LC50 and LC90 values of 25.937 and 33.559 μg/mL, respectively. For a period of 48 h, the LC50 and LC90 values were 52.254 and 60.450 μg/mL, respectively. The levels of acetylcholinesterase, α-carboxylesterase, and β-carboxylesterase enzymes were lower in the treatment group after 24 h compared to the control group. The GC-MS test revealed that the crude extract consisted mainly of 9,10-octadecadienoic acid, which was the primary compound. Docking results indicated that 9,10-octadecadienoic acid showed a strong interaction with acetylcholinesterase (AChE). Our findings suggest that the chemical molecule 9,10-octadecadienoic acid derived from the entomopathogenic fungus B. bassiana is more toxic to T. absoluta larvae. We plan to conduct studies to test its effectiveness in semi-field conditions and to evaluate its stability in field conditions. We believe that this 9,10-octadecadienoic acid molecule could be used to control T. absoluta larvae in the near future without causing environmental pollution.

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Section: Methodsmentioning

confidence: 99%

Biocontrol effects of chemical molecules derived from Beauveria bassiana against larvae of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)

Vivekanandhan,

Swathy,

Alahmadi

et al. 2024

Front. Microbiol.

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“…While commonly used bioinsecticides mainly target D. suzukii adults, they can also affect pest immature stages and/or natural enemies because of their broad-spectrum action [10,27,28]. Avermectins, essential oils, and microbial-based biopesticides are additional tools for managing T. absoluta in organic contexts [18,[29][30][31]. In particular, the use of microbials, such as entomopathogenic bacteria (i.e., Bacillus thuringiensis (Bt) var.…”

Section: Introductionmentioning

confidence: 99%

Compatibility of Bioinsecticides with Parasitoids for Enhanced Integrated Pest Management of Drosophila suzukii and Tuta absoluta

Lisi,

Cavallaro,

Pitruzzello

et al. 2024

Insects

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Drosophila suzukii and Tuta absoluta are successful biological invaders of agroecosystems. Their integrated pest management (IPM) programs involve the release and/or conservation of natural enemies. Among these, Ganaspis kimorum is a major Asian parasitoid of D. suzukii and has been introduced as a classical biological control agent of this pest in Europe and North America, while Necremnus tutae is a key fortuitous parasitoid of T. absoluta in the Mediterranean region. Bioinsecticides represent key alternatives to chemicals for controlling both pests. This study investigated the potential compatibility of both parasitoids with Beauveria bassiana, Bacillus thuringiensis, garlic essential oil (EO), and spinosad, in comparison to two synthetic insecticides, cyantraniliprole and chlorantraniliprole. The results showed that combining each of the tested insecticides with G. kimorum slightly increased pest mortality compared to the insecticide alone. Necremnus tutae had a significant additive effect on host mortality when combined with insecticides. Beauveria bassiana and B. thuringiensis were most compatible with both parasitoid species. Both garlic EO and chlorantraniliprole impaired the survival of immature N. tutae and showed sublethal toxicity on the reproductive and non-reproductive behaviors of N. tutae. Spinosad exhibited high acute toxicity on both juvenile and adult parasitoids of both species. Overall, these findings provide useful insights into insecticide selectivity toward two key parasitoids and offer new knowledge on the potential of combining natural enemies and bioinsecticides for optimized IPM.

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Preparation and insecticidal performance of 1,8-cineole/cellulose acetate electrospun fibrous membranes

Yan,

Gong,

Qian

et al. 2024

International Journal of Biological Macromolecules

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Toxicity of Cinnamomum spp. essential oil to Tuta absoluta and to predatory mirid

Cited by 3 publications

References 91 publications

Biocontrol effects of chemical molecules derived from Beauveria bassiana against larvae of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)

Biocontrol effects of chemical molecules derived from Beauveria bassiana against larvae of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)

Compatibility of Bioinsecticides with Parasitoids for Enhanced Integrated Pest Management of Drosophila suzukii and Tuta absoluta

Preparation and insecticidal performance of 1,8-cineole/cellulose acetate electrospun fibrous membranes

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