Insecticidal action of Bauhinia monandra leaf lectin (BmoLL) against Anagasta kuehniella (Lepidoptera: Pyralidae), Zabrotes subfasciatus and Callosobruchus maculatus (Coleoptera: Bruchidae)

Safety and Efficacy of Moringa oleifera Lamarck (1785) — Therapeutic and Toxicological Properties

“…The peritrophic matrix dividing the gut lumen contents from intestinal epithelial layer contains glycosaminoglycans enclosed in a chitinnous matrix susceptible to enzymatic action. Thus, it is feasible that chitin-lectin complexes interfere with the peritrophic matrix integrity, leading to the death of larvae [101]. It is likely that bioactive organic chemicals as phenols, terpenoids, glycosides and alkaloids found in M. oleifera may jointly or independently contribute to cause oviposition deterrent and skin repellent [70,98,102].…”

Insecticide Activity of Lectins and Secondary Metabolites

“…Lectins have deleterious effects against larvae, developing stages and mature forms of insects from orders Coleoptera, Diptera, Hemiptera, Homoptera, Hymenoptera, Isoptera, Lepidoptera and Neuroptera (Murdock et al, 1990;Eisemann et al, 1994;Powell et al, 1995;Zhu-Salzman et al, 1998;Bandyopadhyay et al, 2001;Isidro et al, 2001;Hogervorst et al, 2006;Kaur et al, 2006;Coelho et al, 2007;Macedo et al, 2007;Fitches et al, 2008;Sá et al, 2008;Coelho et al, 2009;Sá et al, 2009c;Silva et al, 2009;Napoleão et al, 2011;Souza et al, 2011b). Insecticide activity of lectin is generally evaluated by bioassays that incorporate the lectin into artificial diets offered to insects, with insects dying from nutritional deprivation.…”

“…The precise mechanisms of insecticidal action of lectins remain unknown, though it has been suggested that this entomotoxic activity seems to depend upon the carbohydrate recognition property they exhibit. Plant lectins with affinity for N-acetylglucosamine and chitin-binding property are able to bind chitin and glycosylated proteins of the peritrophic matrix, interfering in the digestion and absorption of nutrients (Tellam et al, 1999;Peumans and Van Damme, 1995;Zhu-Salzman et al, 1998;Zhu-Salzman and Salzman, 2001;Carlini and Grossi-de-Sá, 2002;Macedo et al, 2004;Macedo et al, 2007). The peritrophic matrix constitutes a membrane found in the midgut that separates the contents of the gut lumen from the digestive epithelial cells.…”

Purification of a new fungal mannose-specific lectin from Penicillium chrysogenum and its aphicidal properties

“…Among them, Penicillum chrysogenum was selected here due to its very common availability and the potential use of industrial residues as a source of potential bioinsecticide proteins. Indeed, the ability of lectins to interact with carbohydrates and combine with glycol-components of cell surface has been investigated to find toxic proteins to control insect pests as alternative methods to conventional chemical control (Macedo et al 2007). A range of Hemiptera including aphids cause serious damage to many crop plants by directly sucking plant sap and by indirectly acting as virus vectors (Barton et al 1987;Peferoen et al 1990).…”