To screen for the above mentioned virulence attributes and to find the most predominant serotypes among UPEC in the western Indian region, we analyzed 150 human clinical isolates.
We believe that the methods of detection of the above mentioned virulence markers are reasonably easy and screening them in a clinical microbiology laboratory is a worthwhile exercise.
Though currently not as widely used as the above mentioned virulence markers, different pili (srtB, srtC, srtD, srtF and srtG) have also been associated with different STs.
Despite the above, the virulence (a proxy for fitness in parasitoids) expressed by these populations on the tested aphid hosts shows a lack of local host adaptation.
In addition, DNA array data were fully consistent with the above-described virulence factor PCR results.
We also include FipA (described above) as a virulence factor because of its immunosuppressive properties [43], [77], though it is most similar to an acetyl-CoA transferase of the butyrate fermentation system.
Despite the identification of the above regulatory and virulence factors from Photorhabdus and Xenorhabdus, the full profiles of genes expressed during insect infection by these two closely related bacteria are unknown.
One explanation for the above differences concerns virulence factors, such as cytotoxin-associated antigen (CagA) and vacuolating cytotoxin (VacA), produced by HP strains, that may be more carcinogenic to the gastric epithelium (Peek and Blaser, 2002).
As mentioned above, additional virulence factors have now been identified in the genome of citrus-associated strains through the SSH experiments.
As for all HPAI (H5N1) strains from Africa, the above viruses had the virulence marker lysine (K) in position 627 of PB2 associated with accelerated viral replication, reduced host defense, higher mortality rate in mice (11 ), and a wider host range of subtype H5N1 strains (12 ).
