Sentence examples for more aggressive pathogen from inspiring English sources

We found here that increases in the mean dispersal distance of the pathogen facilitated its shift from the wild host to the crop as well as its evolution on the crop towards more aggressive pathogen genotypes.

Plant pathogenicity may also be associated with a higher number of AA9 family genes, as suggested in the case of the Dothideomycetes species pair P. nodorum and Mycosphaerella graminicola; the former is the more aggressive pathogen and has 30 genes, whereas the latter houses only two genes for AA9 [ 68].

In 2002, a recall of >18 million pounds of ground beef with E. coli O157 contamination (40 ), and a new USDA directive (41 ), galvanized the US beef industry to institute more aggressive pathogen control measures, including testing of all lots of beef trimmings or ground beef for E. coli O157 in plants (R. Huffman, American Meat Institute Foundation, pers.

Unlike natural plant populations, the high density and genetic uniformity of cultivated plant populations are highly conducive to pathogen transmission between infected and noninfected hosts, which favours more aggressive pathogens (Anderson and May 1982; Hochberg 2000; Thrall et al. 2007).

The policy regarding cultivated areas should therefore take into account the surrounding wild ecosystem to prevent a 'boomerang' effect, that is, the return of more aggressive pathogens back on wild original hosts.

Furthermore, it has been demonstrated that virulence factors can transfer between S. aureus and Staphylococcus epidermidis, which may result in the transformation of S. epidermidis from a commensal organism into a more aggressive opportunistic pathogen [30].

Sometimes, the more host aggressive pathogens gain fitness through enhanced environmental survival, as transmission from immobilized or dead hosts may still be efficient.

Experiments and field observations have shown that this allows the fungus to be a more aggressive and virulent pathogen than Armillaria species whose rhizomorphs branch monopodially (where lateral branches grow from a main stem).

Furthermore, S. aureus is an aggressive pathogen, more associated with acute infection where symptoms appear rapidly requiring immediate intervention.

This raises the question as to whether a more aggressive search for viral pathogens should be conducted in all ventilated patients, coupled with more frequent and targeted use of antiviral therapy.

In contrast, the less aggressive pathogen F. verticillioides develops more slowly, leaving the plant more time to respond and restrict fungal growth [ 40].