7 Αποτελέσματα
1. Pupae of Galleria mellonella and Pieris brassicae given an injection with live, non-pathogenic Enterobacter cloacae or abiotic foreign molecules induce an acquired immunity that corresponds with the synthesis of haemolymph proteins of antibacterial activity. 2. This humoral defensive response
Larvae of the cabbage white butterfly, Pieris brassicae, were reared on a semisynthetic diet with or without 20 ppm of the herbicide 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) and using three assays the sera were subsequently tested for natural antibacterial activity against Bacillus cereus,
In Pieris brassicae, parasitism by Cotesia glomerata and bacterial infection are differentiated with respect to haemolymph protein arrays, and production or suppression of antibacterial agents. Bacteriolytic activity in haemolymph from parasitized larvae was slightly, but significantly, higher 24h
The larvae of Pimpla turionellae, that develop in pupae of various Lepidoptera, discharged through their anus up to 8 microliters/h of a hyaline liquid, which is termed "anal secretion". It exerted a strong bacteriostatic effect on Enterobacter cloacae, a highly virulent intestinal microorganism
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 activity of insect haemolymph against Escherichia coli D31, both in Galleria
Abaecin is a major antimicrobial peptide, initially identified from the honeybee. In our effort to discover new antimicrobial peptides from the endoparasitoid wasp Pteromalus puparum, we identified an antibacterial cDNA clone that codes a fragment with high amino acid sequence similarity to abaecin.
OBJECTIVE
To isolate an antagonist for use in the biological control of phytopathogenic fungi including Colletotrichum gloeosporioides, then to purify and characterize the biocontrol agent produced by the antagonist.
RESULTS
Bacteria that exhibited antifungal activity against the causative agent