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Titolo:
Exoproteinases of the type A in pathogenesis of insect bacterial diseases
Autore:
Andrejko, M;
Indirizzi:
Marie Curie Sklodowska Univ, Dept Insect Pathol, PL-20033 Lublin, Poland Marie Curie Sklodowska Univ Lublin Poland PL-20033 -20033 Lublin, Poland
Titolo Testata:
FOLIA BIOLOGICA-KRAKOW
fascicolo: 3-4, volume: 47, anno: 1999,
pagine: 135 - 141
SICI:
0015-5497(1999)47:3-4<135:EOTTAI>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
PSEUDOMONAS-AERUGINOSA; SYMBIOTIC BACTERIA; GEN-NOV; IMMUNITY; XENORHABDUS; ENTEROBACTERIACEAE; HETERORHABDITIS; NEMATODES; INHIBITOR; CECROPIA;
Keywords:
insect immunity; lepidopterous insects; Pseudomonas aeruginosa; Serratia marcescens; Heterorhabditis bacteriophora; cecropin peptides; attacin-like activity; A type immune inhibitors;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Andrejko, M Marie Curie Sklodowska Univ, Dept Insect Pathol, Akad 19, PL-20033 Lublin,Poland Marie Curie Sklodowska Univ Akad 19 Lublin Poland PL-20033 nd
Citazione:
M. Andrejko, "Exoproteinases of the type A in pathogenesis of insect bacterial diseases", FOL BIOLOG, 47(3-4), 1999, pp. 135-141

Abstract

Immune inhibitors produced in infected larvae of Galleria mellonella by such entomopathogens as Pseudomonas aeruginosa, Serratia marcescens and Heterorhabditis bacteriophora effectively blocked in vitro bactericidal activityof insect haemolymph against Escherichia coli D31, both in Galleria mellonella and Pieris brassicae pupae previously vaccinated with Enterobacter cloacae. Even at a trace concentration, the extracellular proteinases, by proteolytic degradation, totally destroyed the activity of cecropin peptides from Galleria and cecropin-like and attacin-family proteins from Pieris, but no ability to destroy antibacterial activity was shown by extracts obtainedfrom Galleria larvae killed by massive doses of bacterial saprophytes. It is suggested that by blocking antibacterial immune response of the host, the proteinases help the bacteria to multiply in the haemolymph, thus they could be considered an important factor in the pathogenesis of bacterial diseases of insects.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 10:30:26