Effects of chloroperoxidase and hydrogen peroxide on the viabilities of Aspergillus flavus conidiospores.
The effects of chloroperoxidase [EC 1.1.1.10] and hydrogen peroxide on the viabilities of quiescent and germinating conidiospores of an aflatoxigenic fungus, Aspergillus flavus, were determined. Hydrogen peroxide was found moderately lethal and chloroperoxidase produced a 30-fold increase in the lethality of hydrogen peroxide to germinating conidia, which were 75-fold more susceptible to chloroperoxidase than were quiescent conidia. According to infrared examinations of fungal corpses, mortality occurred by oxidation rather than peroxidative chlorination.
Southern Regional Research Center, USDA, New Orleans, LA 70179, USA.
T J
TJ
Jacks
A J
AJ
De Lucca
N M
NM
Morris
D001231:Aspergillus flavus / Q000187:drug effects* / Q000472:pathogenicity / Q000502:physiology*; D002711:Chloride Peroxidase / Q000494:pharmacology*; D004357:Drug Synergism; D006861:Hydrogen Peroxide / Q000494:pharmacology*; D013172:Spores, Fungal / Q000187:drug effects / Q000502:physiology
D006861:Hydrogen Peroxide; D002711:Chloride Peroxidase