The toxic effects of neem extract and azadirachtin on the brown planthopper, Nilaparvata lugens (Stål) (BPH) (Homoptera: Delphacidae)

Senthil-Nathan, Sengottayan; Choi, Man Young; Paik, Chae-Hoon; Seo, Hong Yul; Kim, Jae-Duk; Kang, Seok Min

doi:10.1016/j.chemosphere.2006.09.045

Cited by 54 publications

(25 citation statements)

References 39 publications

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“…Although this strategy has proven successful in controlling BPH population, the ability of this pest to overcome the natural defenses of rice plants poses challenges to rice production [7]. To develop a better strategy for controlling BPH populations, some efforts have been made to explore the effect of rice secondary metabolites on the control of BPH population [8]–[11]. However, the involvement of secondary metabolites (volatiles and secondary chemicals) derived from rice plants in defense against BPHs, and the mechanisms mediating their activities, remains obscure [12].…”

Section: Introductionmentioning

confidence: 99%

Glutathione S-Transferase of Brown Planthoppers (Nilaparvata lugens) Is Essential for Their Adaptation to Gramine-Containing Host Plants

Sun

Zhang

et al. 2013

PLoS ONE

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Plants have evolved complex processes to ward off attacks by insects. In parallel, insects have evolved mechanisms to thwart these plant defenses. To gain insight into mechanisms that mediate this arms race between plants and herbivorous insects, we investigated the interactions between gramine, a toxin synthesized by plants of the family Gramineae, and glutathione S transferase (GST), an enzyme found in insects that is known to detoxify xenobiotics. Here, we demonstrate that rice (Oryza sativa), a hydrophytic plant, also produces gramine and that rice resistance to brown planthoppers (Nilaparvata lugens, BPHs) is highly associated with in planta gramine content. We also show that gramine is a toxicant that causes BPH mortality in vivo and that knockdown of BPH GST gene nlgst1-1 results in increased sensitivity to diets containing gramine. These results suggest that the knockdown of key detoxification genes in sap-sucking insects may provide an avenue for increasing their sensitivity to natural plant-associated defense mechanisms.

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Section: Introductionmentioning

confidence: 99%

Glutathione S-Transferase of Brown Planthoppers (Nilaparvata lugens) Is Essential for Their Adaptation to Gramine-Containing Host Plants

Sun

Zhang

et al. 2013

PLoS ONE

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“…In the search for environmentally safe insecticides, numerous studies have investigated the use of plants to control vector-borne diseases (Schumutterer 1990, Al-Sharook et al 1991, Boeke et al 2004, Garcia and Azambuja 2004, Wandscheer et al 2004, Senthil Nathan et al 2006. Plants from the Meliaceae family, especially the neem tree, A. indica, and the chinaberry tree, M. azedarach, have probably been studied most extensively because of their effects against insects, especially those of agricultural importance.…”

Section: Discussionmentioning

confidence: 99%

“…Chemical control using residual action insecticides has been suggested in the context of collective protection (Ministé rio da Saú de 2003). Although insecticides are known for their effective control in reducing vector-borne diseases, they also display side effects, such as the development of insect resistance and toxicity (Boeke et al 2004, Senthil Nathan et al 2006. Thus, there has been major interest in developing plant-based insecticides and insect growth regulators (IGRs) that can be tested in integrated vector control programs, because they are ecologically safe, biodegradable, and target speciÞc (Isman 2005, Shaalana et al 2005.…”

mentioning

confidence: 99%

Effect of Fruit and Leaves of Meliaceae Plants (Azadirachta indicaandMelia azedarach) on the Development ofLutzomyia longipalpisLarvae (Diptera: Psychodidae: Phlebotominae) Under Experimental Conditions

et al. 2009

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This no-choice, laboratory study focuses on the feeding of dried, ground, homogeneous powdered, unprocessed fruit and leaves of Azadirachta indica and Melia azedarach to Lutzomyia longipalpis larvae to determine the effects on their mortality and metamorphosis. A. indica and M. azedarach fruit and leaves significantly increased larval mortality in comparison to larvae fed the untreated, standard diet. A. indica fruit and leaves blocked the molting of the larvae to the fourth instar, resulting in them remaining as third instars until the end of the experiment. M. azedarach fruit also blocked the molting of larvae, which remained permanently in the fourth instar. Feeding M. azedarach leaves resulted in greater molt inhibition. All insects in this group stopped their development as second-instar larvae. No antifeedant effect was detected for any experimental treatment. The results indicate that nontoxic, unprocessed materials obtained from A. indica and M. azedarach are potent development inhibitors of L. longipalpis larvae.

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“…Many of these substances contain plant protection activity (Nathan et al 2007), which has facilitated their industrial/commercial exploitation. First, active substances must be isolated and characterized, and their biological activity demonstrated.…”

Section: The Role Of Chemistry In Biopesticide Developmentmentioning

confidence: 99%

Biopesticides from Natural Products: Current Development, Legislative Framework, and Future Trends

Villaverde¹,

Sandín‐España²,

Sevilla-Morán³

et al. 2016

BioResources

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The importance of biomass as a source of chemicals, biofuels, and energy is widely accepted. Currently, the attention is mainly focused on the valorisation of by-products from lignocellulosic materials. Chemical compounds derived from plants and microorganisms that provide good protection for crops against weeds, pests, and diseases (biopesticide active substances) have been used to formulate pesticides. Their use is increasingly encouraged by new pesticide regulations that discourage the use of harmful active substances. This article reviews the current and future situation of biopesticides, especially natural chemical products, and focuses on their potential within the European pesticide legislative framework. Moreover, this article highlights the importance of the different modes/mechanisms of action of the active substances obtained from natural sources, the role of chemistry in biopesticide development, and how the adoption of integrated pest management practices contributes to a greater trend towards biopesticides.

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The toxic effects of neem extract and azadirachtin on the brown planthopper, Nilaparvata lugens (Stål) (BPH) (Homoptera: Delphacidae)

Cited by 54 publications

References 39 publications

Glutathione S-Transferase of Brown Planthoppers (Nilaparvata lugens) Is Essential for Their Adaptation to Gramine-Containing Host Plants

Glutathione S-Transferase of Brown Planthoppers (Nilaparvata lugens) Is Essential for Their Adaptation to Gramine-Containing Host Plants

Effect of Fruit and Leaves of Meliaceae Plants (Azadirachta indicaandMelia azedarach) on the Development ofLutzomyia longipalpisLarvae (Diptera: Psychodidae: Phlebotominae) Under Experimental Conditions

Biopesticides from Natural Products: Current Development, Legislative Framework, and Future Trends

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