In general, the concept of genetic response to environmental stress died with
Lamarck. That said, the answer to the question is a resounding: anything is
possible.
I certainly would caution people against trying to reproduce a diseased plant,
unless it is the only one of its kind left in the world.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)