title: Fate of Escherichia coli O157:H7 in manure-amended soil.
abstract: Escherichia coli O157:H7 cells survived for up to 77, >226, and 231 days in manure-amended autoclaved soil held at 5, 15, and 21 degrees C, respectively. Pathogen populations declined more rapidly in manure-amended unautoclaved soil under the same conditions, likely due to antagonistic interactions with indigenous soil microorganisms. E. coli O157:H7 cells were inactivated more rapidly in both autoclaved and unautoclaved soils amended with manure at a ratio of 1 part manure to 10 parts soil at 15 and 21 degrees C than in soil samples containing dilute amounts of manure. The manure-to-soil ratio, soil temperature, and indigenous microorganisms of the soil appear to be contributory factors to the pathogen's survival in manure-amended soil.
authors.affiliation: Center for Food Safety, University of Georgia, Griffin, Georgia 30223-1797, USA.
authors.forename: Xiuping
authors.initials: X
authors.lastname: Jiang
authors.forename: Jennie
authors.initials: J
authors.lastname: Morgan
authors.forename: Michael P
authors.initials: MP
authors.lastname: Doyle
mesh_terms: D000898:Antibiosis; D019453:Escherichia coli O157 / Q000502:physiology*; D008372:Manure / Q000382:microbiology*; D012988:Soil Microbiology; D013696:Temperature
chemical_list: D008372:Manure