title: [Survival capacity of Corynebacterium pseudotuberculosis biovar ovis in different soil types from Chubut, Argentine Patagonia].
abstract: Corynebacterium pseudotuberculosis is transmitted among sheep in Argentine Patagonia causing pseudotuberculosis. The bacterium penetrates the skin or mucous membrane wounds, infecting the superficial lymph nodes and viscera. When surface abscesses are cut during shearing, they drain their purulent contents and contaminate tools and the soil. The objective of this work was to evaluate the survival capacity of C. pseudotuberculosis over time, in soils from the extra-Andean Patagonia region. Five types of superficial soils were collected from different areas in Chubut province (extra-Andean Patagonia), having distinctive physicochemical properties including organic matter content (very high to nonexistent), pH (neutral to strongly alkaline), electrical conductivity (saline to non-saline) and texture (sandy, clayey, silty loam). Different aliquots of each type of soil were inoculated with C. pseudotuberculosis PAT10 strain isolated from a Patagonian sheep, and were stored at room temperature. The number of surviving bacteria was determined at various times. Sixty percent (60%) of the inoculated C. pseudotuberculosis population survived for 80 to 210 days in soils with moderate to high organic matter content respectively. Silty soils favored bacterial survival, whereas the variables pH and salinity had no effect on survival.
authors.affiliation: Cátedra de Microbiología Clínica, Departamento de Bioquímica, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut, Argentina.
authors.forename: Laura
authors.initials: L
authors.lastname: Alvarez
authors.affiliation: Cátedra de Microbiología Clínica, Departamento de Bioquímica, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut, Argentina.
authors.forename: Aillin
authors.initials: A
authors.lastname: William
authors.affiliation: Cátedra de Suelos, Departamento de Geología, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut, Argentina.
authors.forename: Isabel
authors.initials: I
authors.lastname: Castro
authors.affiliation: Cátedra de Suelos, Departamento de Geología, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut, Argentina.
authors.forename: Fernanda
authors.initials: F
authors.lastname: Valenzuela
authors.affiliation: Cátedra de Microbiología Clínica, Departamento de Bioquímica, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut, Argentina. Electronic address: sbelchior@unpata.edu.ar.
authors.forename: Silvia
authors.initials: S
authors.lastname: Estevao Belchior
mesh_terms: D000818:Animals; D003354:Corynebacterium Infections / Q000635:transmission; D016925:Corynebacterium pseudotuberculosis; D012756:Sheep; D012757:Sheep Diseases / Q000635:transmission; D012987:Soil
chemical_list: D012987:Soil
keywords: Contaminación del ambiente; Ovinos; Pseudotuberculosis; Sheep; Soil contamination