Differential thresholds of azadirachtin for feeding deterrence and toxicity in locusts and an aphid

Mordue, A. J.; Nisbet, Alasdair J.; Nasiruddin, Munira; Walker, Elaine

doi:10.1111/j.1570-7458.1996.tb00887.x

Cited by 20 publications

(13 citation statements)

References 14 publications

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“…It exhibits significant anti-feeding and oviposition-deterring effects against many insect pests such as moths, beetles, plant hoppers, and aphids (Mordue et al 1996;Cherry et al 2010). Preliminary results also showed that azadirachtin deters oviposition by P. operculella on potato tubers (Kang et al 2007).…”

Section: Introductionmentioning

confidence: 73%

Tick Repellent Substances in the Essential Oil of <I>Tanacetum vulgare</I>

Pålsson¹,

Jaenson²,

Bæckström³

et al. 2008

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Section: Introductionmentioning

confidence: 73%

Tick Repellent Substances in the Essential Oil of <I>Tanacetum vulgare</I>

Pålsson¹,

Jaenson²,

Bæckström³

et al. 2008

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“…These disturbances include hindrance in the food movement through the insect's midgut and inhibition in production of digestive enzymes (Schmutterer, 1985). An early study conducted by Nisbet et al (1996) highlighted this antifeedant feature of azadirachtin. It was established that a concentration of 50–100 ppm of azadirachtin caused an insecticidal effect however, it has a high potential to harm beneficial insects as well.…”

Section: Neem Active Pesticidal Componentsmentioning

confidence: 99%

“…Thus, it can be concluded that even with a low concentration of azadirachtin, it cannot cause an immediate antifeedancy. Secondary antifeedancy effect as well as a sterilant effect can rapidly manifest themselves and aid in providing crop protection by reducing the pest population without harming non-target or natural predator populations (Nisbet et al, 1996). …”

Section: Neem Active Pesticidal Componentsmentioning

confidence: 99%

Progress on Azadirachta indica Based Biopesticides in Replacing Synthetic Toxic Pesticides

et al. 2017

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Over the years, extensive use of commercially available synthetic pesticides against phytophagous insects has led to their bioaccumulation in the environment causing increased resistance and reduction in soil biodiversity. Further, 90% of the applied pesticides enter the various environmental resources as a result of run-off, exposing the farmers as well as consumers of the agricultural produce to severe health issues. Therefore, growing attention has been given toward the development of alternate environmentally friendly pesticides/insecticides that would aid an efficient pest management system and also prevent chronic exposures leading to diseases. One such strategy is, the use of neem plant's (Binomial name: Azadirachta indica) active ingredients which exhibit agro-medicinal properties conferring insecticidal as well as immunomodulatory and anti-cancer properties. The most prominent constituent of neem is azadirachtin, which has been established as a pivotal insecticidal ingredient. It acts as an antifeedant, repellent, and repugnant agent and induces sterility in insects by preventing oviposition and interrupting sperm production in males. This review discusses, key neem pesticidal components, their active functional ingredients along with recent strategies on employing nanocarriers, to provide controlled release of the active ingredients and to improve their stability and sustainability.

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“…Antifeedancy assays using the insect S. gregaria, which is particularly sensitive to azadirachtin (Mordue (Luntz) et al 1996), showed that both the roots and the cultivation medium were very antifeedant. Figure 1 shows that the antifeedancy response of insects to extracts of neem hairy root cultures, their cultivation medium, callus and pure azadirachtin are similar and probably due to the presence of similar bioactive compounds.…”

Section: Discussionmentioning

confidence: 99%

Induction of hairy root cultures of Azadirachta indica A. Juss. and their production of azadirachtin and other important insect bioactive metabolites

et al. 2002

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Hairy root cultures were established from stem and leaf explants of Azadirachta indica A. Juss (neem) following infection with Agrobacterium rhizogenes. Transformation was confirmed using polymerase chain reaction analysis. The cultures had a relatively fast growth rate (0.134 g dry weight day -1 ) and showed a 100-fold increase in biomass over a 4-week culture period. Both the roots and cultivation medium were antifeedant as determined by a no-choice bioassay using the desert locust, Schistocerca gregaria. Azadirachtin, nimbin, salannin, 3-acetyl-1-tigloylazadirachtinin and 3-tigloylazadirachtol were detected in the hairy roots by supercritical fluid chromatography. The cultivation medium contained 3-acetyl-1-tigloylazadirachtinin, 3-tigloylazadirachtol and desacetylsalannin.

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Differential thresholds of azadirachtin for feeding deterrence and toxicity in locusts and an aphid

Cited by 20 publications

References 14 publications

Tick Repellent Substances in the Essential Oil of <I>Tanacetum vulgare</I>

Tick Repellent Substances in the Essential Oil of <I>Tanacetum vulgare</I>

Progress on Azadirachta indica Based Biopesticides in Replacing Synthetic Toxic Pesticides

Induction of hairy root cultures of Azadirachta indica A. Juss. and their production of azadirachtin and other important insect bioactive metabolites

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