Acta Entomologica Sinica (2003) 46, 424-428

Rong Zhu, Jian-Xin Peng and Hua-Zhu Hong (2003)
Effects of fluorescent brightener on the peritrophic membrane structure of Spodoptera exigua
Acta Entomologica Sinica 46 (4), 424-428
Abstract: Environmental scanning electron microscopy and biochemical techniques were employed to analyze the structure of the normal and fluorescent brightener28 (M2R) treated peritrophic membrane (PM) of Spodoptera exigua. The normal PM surface was smooth and wrinkled without pores or slits while the treated PM surface had pores and slits. There were many types of protein in the PM. SDS-PAGE separation of the PM suggest that there are at least 17 polypetides, most of them less than 97.4 kD. Proteins formed 41.98 % of the total mass of the, PM and carbohydrates 2.05 % . The PM proteins could be dissociated from the PM in vitro by M2R. Droplet feeding fifth instar larvae with M2R greatly increased the permeability of the PM.
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Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Spodoptera exigua