Declining reactivation ability of Escherichia coli O157 following incubation within soil

Pathogenic members of Escherichia coli & Shigella spp. Shigellosis

“…The presence of soil and sediment has been shown to protect and stabilize E. coli cells (Davies et al, 1995;Fish and Pettibone, 1995;Sampson et al, 2006;Rehmann and Soupir, 2009;Garzio-Hadzick et al, 2010) (Table 7) which may provide bacteria a protective niche with available soluble organic matter and nutrients but also a shield against UV sunlight as well as predation by protozoa (Jamieson et al, 2005;Koirala et al, 2008). In the study of Williams and co-workers (Williams et al, 2013) a rapid decay in the number of cells was observed over the first 7 days after inoculation of E. coli O157 in an agricultural soil when stored at 4 ºC or 15 ºC for up to 120 days, although the pathogen can persist at a low metabolic state for prolonged periods (Jones, 1999). According to Garzio-Hadzick et al (2010) a higher content of fine particles in the sediments increased the survival of manure borne E. coli, similarly to other reports (Burton et al, 1987), although this is in controversy with the work of Cinotto (Cinotto, 2005) in which a higher survival of E. coli was shown in sediments with larger particles (between 125 to 500 mm).…”

Fertilization and irrigation practice as source of microorganisms and the impact on nematodes as their potential vectors

“…Survival is affected by soil type and temperature as well as the presence of an intact autochthonous microbial community (Moynihan et al, 2013). Declining reactivation ability was reported for E. coli O157 with incubation at soil temperatures below 15 C for 120 days (Williams et al, 2013). Distribution of these pathogens takes place via active movement as microorganisms are able to migrate significant distances through the soil in vertical as well as horizontal direction (Abu-Ashour et al, 1994).…”