Furthermore, if change in the pathogenicity or development of resistance would occur, the exemption for SASd will be reconsidered.
In an experiment on M. oryzae on artificial medium and on plants over 10 generations, Park et al. [ 46] observed no change in the pathogenicity or genome sequences of avirulence genes.
If there is any future indication of an increasing risk, due to e.g. change in the pathogenicity or development of antimicrobial resistance, the risk assessment will be re-evaluated and control measures reinforced if needed.
Second, the high potential for cross-species transmission of PPRV from small ruminants to cattle in areas where these species live in close proximity suggests that monitoring such livestock communities would be useful for detecting any changes in the apparent pathogenicity of PPRV, including the possible emergence of PPR as a disease in cattle populations.
We have investigated the changes in pathogenicity in populations of the pathogen V. inaequalis, associated with the domestication of their host.
We used cross-pathogenicity tests in controlled quarantine conditions to investigate the changes in pathogenicity traits of the apple scab fungus, V. inaequalis, associated with the domestication and spread of its host.
Additional insights into the changes in pathogenicity associated with the apple domestication can be gained by comparing the frequency of virulence and aggressiveness of isolates collected in populations from natural and agro-ecosystems.
Here, we used cross-inoculation tests to investigate the changes in pathogenicity traits of the apple scab fungus V. inaequalis associated with the domestication and spread of its host.
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However, the lack of early viral samples makes it difficult to study possible changes in viral pathogenicity.
