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Titolo:
Enhancement of Bacillus thuringiensis toxicity to lepidopterous species with the enhancin from Trichoplusia ni granulovirus
Autore:
Granados, RR; Fu, Y; Corsaro, B; Hughes, PR;
Indirizzi:
Cornell Univ, Boyce Thompson Inst Plant Res, Ithaca, NY 14853 USA Cornell Univ Ithaca NY USA 14853 son Inst Plant Res, Ithaca, NY 14853 USA
Titolo Testata:
BIOLOGICAL CONTROL
fascicolo: 2, volume: 20, anno: 2001,
pagine: 153 - 159
SICI:
1049-9644(200102)20:2<153:EOBTTT>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPODOPTERA-LITTORALIS LEPIDOPTERA; INSECTICIDAL CRYSTAL PROTEINS; GRANULOSIS-VIRUS; DELTA-ENDOTOXIN; BACULOVIRUS ENHANCIN; SENSITIVE METHOD; VAR ENTOMOCIDUS; MIDGUT; LARVAE; NOCTUIDAE;
Keywords:
baculovirus; Bacillus thuringiensis; toxicity; enhancement; Lepidoptera : Noctuidae; bioassay; enhancin; granulovirus;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Granados, RR Cornell Univ, Boyce Thompson Inst Plant Res, Tower Rd, Ithaca, NY 14853 USA Cornell Univ Tower Rd Ithaca NY USA 14853 thaca, NY 14853 USA
Citazione:
R.R. Granados et al., "Enhancement of Bacillus thuringiensis toxicity to lepidopterous species with the enhancin from Trichoplusia ni granulovirus", BIOL CONTRO, 20(2), 2001, pp. 153-159

Abstract

The enhancin from the Trichoplusia ni (Hubner) granulovirus (TnGV) is a 104-kDa viral protein that can significantly increase the virulence of several baculoviruses. Enhancin can destroy the structural integrity of the peritrophic membrane (PM) of lepidopterous larvae, resulting in more efficient penetration of the PM by virions and avoidance of inactivation by larval midgut factors. In this study we demonstrate that TnGV enhancin can also enhance toxicity of Bacillus thuringiensis (Berliner) (Bt) to several noctuid species. Addition of enhancin significantly increased the toxicity of Dipel, a commercial Pt formulation, to six species (T. ni, Helicoverpa tea (Boddie), Heliothis virescens (Fabricius), Spodoptera exigua (Hubner), Pseudoplusia includens (Walker), and Anticarsia gemmatalis (Hubner)). Furthermore, theeffectiveness of four commercial Pt-based products (Cutlass, Javelin, Biobit, and Dipel) against T. ni was enhanced three- to sixfold by adding purified enhancin. We hypothesize that the PM of larvae can impede the movement of the BT toxin protein to the midgut brush border and that enhancin can increase the toxicity by affecting the permeability of the PM. (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 17:33:52