Plasmid-mediated chloramphenicol resistance in Staphylococcus aureus has been shown to involve acetylation of chloramphenicol by an enzyme induced by growth in the presence of the antibiotic and certain analogues. Analysis of the kinetics of induction has been complicated by (i) the intrinsic inhibitory effects of chloramphenicol on induced enzyme synthesis and (ii) the rapid disappearance of i...

B Weisblum of its activity as inducer of resistance.

Several macrolide-, lincosamide-, and streptogramin B-type (MLS) antibiotics were tested as inducers of erythromycin A (EM)-resistant [(14)C]leucine incorporation. Only 14-membered-ring macrolides having a glycosidically linked 6-deoxy sugar at the C-3 position of the lactone ring and the structurally dissimilar lincosamide, celesticetin, showed inducer activity. Modifications of EM at the C-4'...

Abstract The pathogen Moliniophthora perniciosa can cause losses in the cocoa crop of more than 90% when integrated disease management is not carried out crop. In present study, effect sucrose as a resistance inducer trees ( Theobroma cacao L.), was evaluated for “witches’ broom” caused by Moniliophthora . experiment developed municipality Chaparral, Tolima, Colombia (854 m.a.s.l.). treatments ...

Abstract Late wilt, a vascular disease caused by the fungus of Cephalosporium maydis , is considered one Egypt’s most severe maize threats. The purpose this study was to investigate suppressive effect resistance inducer beta-sitosterol on C. as well its involvement in reducing incidence late wilt infection under greenhouse and field conditions. In vitro studies potato dextrose yeast extract aga...

Levels of resistance to tetracycline, chlortetracycline, demethylchlortetracycline, doxycycline, oxytetracycline, methacycline, pyrrolidinotetracycline, minocycline, and beta-chelocardin of Escherichia coli K-12 carrying transposon Tn10 or defined DNA segments of Tn10 were determined. In all cases, tetA was the only gene required for resistance. Doxycycline was the most effective inducer of tet...