Effect of plant secondary metabolites on common cutworm, Spodoptera litura (Lepidoptera: Noctuidae)

Abstract

The effect of various flavonoids, lectins and phenyl β‐D‐glucoside on larval survival, weights and the activities of digestive (total serine protease and trypsin) and detoxifying (esterase and glutathione‐S‐transferase) enzymes of Spodoptera litura larvae at 7 days after treatment was studied through diet incorporation assay. Flavonoids (rutin, chlorogenic acid, quinic acid, caffeic acid, naringenin, quercitin, kaempferol, myricetin, catechin, and ferulic acid) were incorporated in artificial diet at 100, 500 and 1000 ppm, lectins: groundnut leaf lectin (GLL), concavalin A (ConA) and phenyl β‐D‐glucoside at 1, 2 and 5 μg/mL. Flavonoids such as rutin, quercitin and kaempferol at 1000 ppm were more toxic to S. litura larvae than quinic acid, caffeic acid, naringenin, myricetin, catechin, and ferulic acid. Larval growth and development were significantly reduced in S. litura larvae fed on a diet with GLL and ConA at 5 μg/mL compared to the larvae fed at 2 and 1 μg/mL concentrations. The larvae fed on flavonoid‐treated diets showed significant reduction in serine protease, trypsin and esterase activities. The flavonoids such as rutin, chlorogenic acid, quinic acid, naringenin, quercitin, kaempferol and myricetin, and lectins, GLL and ConA can be utilized in insect control programs.

Overexpression of OsF3H modulates WBPH stress by alteration of phenylpropanoid pathway at a transcriptomic and metabolomic level in Oryza sativa

“…The demand for pesticides is growing, and scientists have focused on flavonoids for pesticides, as they prevent pest larval growth through enzymes inhibition 16 . Off all the flavonoids, Kr and Qu are the most important pest repellent molecules, and reports show that kaempferol-3,7-diglucoside can be used as a Mamestraconfigurata deterrent, and Qu can be used for Spodopteralitura larvae 17 , 18 . Kr and Qu are strong antioxidants and are highly efficient free radical scavengers.…”

Chemical Composition and Attractant Activity of Volatiles from Rhus potaninii to The Spring Aphid Kaburagia rhusicola

“…Freshly picked gallnuts should be blanched in boiling water in time, and when the surface turns from yellowish brown to gray, immediately removed from the water and dried in the sun or low fire. Studies have shown that the volatile substances of the spring host plant play a pivotal role in the long-distance location of insects, especially in the host transfer period [ 17 , 18 ]. K. rhusicola has strong host plant specificity [ 16 ], which suggests that R. potaninii may release particular volatiles that attract K. rhusicola .…”

Morphology and function of ovipositorial and tarsal sensilla of female Asian citrus psyllid

“…However, olfactory receptors are also present on ovipositor, tarsi or both, and have been reported to be involved in the choice of oviposition site, feeding and communication between conspecific individuals (Ahmed et al 2013;Stadler et al 1995;Zhang et al 2012). Selection of a suitable host for egg laying plays an integral role in the survival of offspring because most larvae and nymphs showed limited mobility (Harris et al 2001;Su et al 2018). The setae that are commonly present on the arthropods tarsal region are usually involved in temperature, humidity, and chemoreception.…”

“…The setae that are commonly present on the arthropods tarsal region are usually involved in temperature, humidity, and chemoreception. Selection of a suitable host for egg laying plays an integral role in the survival of offspring because most larvae and nymphs showed limited mobility (Harris et al 2001;Su et al 2018). To date, the ovipositor and tarsal morphology of several insects of economic importance have been studied.…”