Translocation of bacteria from animal excrements to soil and associated habitats |
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Authors: | A A Kupriyanov N N Kunenkova A H C van Bruggen A M Semenov |
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Institution: | (1) Department of Microbiology, Biological Faculty, Moscow State University, 119899 Vorob’evy Gory, Moscow, Russia;(2) Emerging Pathogens Institute and Plant Pathology Department, IFAS, University of Florida, PO Box 110680, Gainesville, FL 32611-0680, USA |
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Abstract: | The population dynamics of Salmonella enterica var. Typhimurium MAE 110 gfp, Escherichia coli O157:H7 gfp, and Pseudomonas fluorescens 32 gfp were investigated in their introduction to cattle excrements and subsequent entering the soil, plants of cress (Lepidium sativum L.), and migration through the gastroenteric tract of French snails (Helix pomatia L.). The survival of these bacteria in the excrements and soil was investigated at cyclically changing (day-night, 25–15
°C) and constant (18 °C) temperatures. The cyclically changing temperature adversely affected the survival of E. coli O157:H7 gfp, and P. fluorescens but did not influence S. enterica var. Typhimurium. All the bacteria and, especially, the analogues of enteropathogens showed high survival in the cattle and
snail excrements, soil, and on the plants under the gradual decrease in their population. On the cress plants grown in a mixture
of cattle excrements and soil, an increase in the number of the introduced bacteria was observed. |
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