Biological activity of astilbin from Dimorphandra mollis against Anticarsia gemmatalis and Spodoptera frugiperda

Abstract

Astilbin was isolated in high yield from Dimorphandra mollis, and its insecticidal and growth inhibiting activity by stomach ingestion were evaluated against Anticarsia gemmatalis and Spodoptera frugiperda. The insecticidal activity of astilbin, the weight reduction of the larval phase and the prolongation of the larval and pupal phases were verified for both species. Astilbin was identified on the base of its NMR, MS and physical data.

Soybean Cultivars Affecting Performance of Helicoverpa armigera (Lepidoptera: Noctuidae)

“…As can be seen in Table 3, the larvae fed on the cultivar Sahar had the lowest value of ECD, which suggests that these larvae were apparently not as efficient in turning digested food into biomass. It is well known that the degree of food utilization depends upon the digestibility of food and the efficiency, which digested food is converted into biomass (Batista Pereira et al, 2002). The reduction in dietary utilization suggests that reduction in nutritional values may be resulted from both behavioral and physiological effects (Nathan et al, 2005).…”

Insecticidal Activity of Synthetic Amides on Spodoptera frugiperda

“…This reduction in growth indicates two possible modes of action, feeding deterrence causing a reduction in food consumption and/or post-ingestive chronic toxicity (Wheeler et al, 2001). As a consequence of these results, the insect could be more vulnerable to the action of entomopathogens, entomophagous agents and environmental variations, since it remains longer in the field (crop) (Tanzubil and McCaffery, 1990;Batista-Pereira et al, 2002). Moreover, adults emerging from low-weight pupae could be more debilitated and would have lower capacity of competition for vital activities than individuals from healthy pupae.…”

Astilbin suppresses collagen-induced arthritis via the dysfunction of lymphocytes

“…Astilbin, a flavanone, was isolated from the plant. This flavanone has been reported to show insecticidal [13], coenzyme A reductase-inhibiting [14], aldose reductase-inhibiting [15], hepatoprotective [16], anti-oedematogenic [17], and antioxidative activities [18 -19]. In our previous works, we documented evidence that this compound showed a selective inhibition similar to the aqueous extract on the DTH reaction of both ear contact dermatitis and liver injury at the effector phase.…”