Yes. Our company is not actively involved with it, so I haven't done a lot, but I've worked in the process. Maybe just before I jump into that, could I comment briefly on your previous question about how it might be done?
Rusts in particular are carried on alternate hosts to the primary target. The way I'm familiar with it is not with the pine problem, but with wheat stem rust that is carried through Berberis thunbergii, an ornamental shrub that we grow. Traditionally, it's able to host that rust. The symptoms are not seen in that alternate host, but it can be brought into the landscape and it is able to be transmitted to a crop or a forest.