In addition to survival in soil, Rose et al. showed that Y. pestis could survive for limited periods of time (i.e., hours) on a variety of environmental surfaces [9].
The major model parameters were those determining seed movements and survival in soil and seedling emergence.
Nkem et al. (2006) reported no nematode survival in soil samples with EC >4,100 μS cm-1, while at 1,945 μS cm-1 they reported 80%to97%7% survival rates.
However, with the same fire intensity, the severity of the fire and, thus, the survival of soil animals could vary depending on environmental heterogeneity.
The results of the present study could be considered a conservative scenario for long-term prion survival in soil environments.
With this diverse set of B. anthracis and B. cereus strains a common set of phenotypes was seen that include sporulation inhibition, rapid sporulation, exopolysaccharide production, biofilm formation, long-term survival in soil microcosms, and earthworm gut colonization.
These data provide another link in that while manganese may enable prion survival in soil, it would also endow a selective advantage to PrPSc with manganese bound to cause infection in an animal when ingested.
These compounds have antibiotic, antiviral and antifungal activities [ 139] and may contribute to strain survival in soil.
Its survival in soil may depend on the asexual stage of O. sinensis which provides resilient long-lived ascospores as described in other fungi [ 46].
As oocyst survival in soil for up to two years has been reported, any faecal material from infected cats will represent a hazard [ 1]. T. gondii oocysts survive in water (up to 54 months in cold water) so unfiltered water contaminated with T. gondii can lead to infection [ 42, 43].
