title: The effects of the insecticide acephate on the growth and nutrient uptake of an aquatic bacterium.
abstract: The effects of high (1000 ppm) and low (1 ppm) concentrations of acephate on the rate of growth and nutrient uptake by an aquatic bacterium (identified as Chromobacterium lividum ) were investigated. This insecticide increased doubling time, decreased maximum cellular yield, and reduced cell size when C. lividum was grown in the presence of high acephate concentrations. Total [14C]glucose and 14C-labeled amino acids uptake rates were reduced by the high acephate concentration. The high acephate concentration did not affect active uptake of [14C]cycloleucine, a nonmetabolized amino acid analogue. Low concentration of acephate had little apparent influence upon these metabolic processes.
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D002861:Chromobacterium / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D003470:Culture Media; D003515:Cycloleucine / Q000378:metabolism; D005618:Fresh Water; D005947:Glucose / Q000378:metabolism; D007306:Insecticides / Q000494:pharmacology*; D009946:Organothiophosphorus Compounds / Q000494:pharmacology*; D063088:Phosphoramides; D014871:Water Microbiology
chemical_list: D000596:Amino Acids; D003470:Culture Media; D007306:Insecticides; D009946:Organothiophosphorus Compounds; D063088:Phosphoramides; D003515:Cycloleucine; C001969:acephate; D005947:Glucose