2012 saw the first planting of seedlings that might be able to fend off blister rust
Treatments to limit white pine blister rust
have included the physical removal of understory species in the genus Ribes, which is an alternate host for the pathogen (Maloy 1997); chemical spraying of Ribes species; and breeding of resistant sugar pine (Samman and Kitzmiller 1996).
By request of Quinn and McKay, scientists from Cornell University revisited the white pine blister rust
issue with better science and better understanding than what existed in 1911.
is not an isolated case--chestnut blight, Dutch elm disease, sudden oak death and pests like emerald ash borer and the hemlock wooly adelgid all threaten our forests.
Philippe Tanguay, a molecular forest pathologist with the Canadian Forest Service, said a genetic fingerprint of the new discovery determined it was a mutation of an existing strain of blister rust
and was not a new strain.
Perhaps nothing provides a better illustration of the importance of one tree species than the devastation being caused by blister rust
At that time, a disease called white pine blister rust
had been brought into the country.
Less than two years ago, this area was a majestic stand of elder whitebarks, several of which were identified as plus trees--high-value trees that are both producing cones and possibly resistant to the infamous white pine blister rust
The loss is the result of an outbreak of an arboreal plague called blister rust
We were there to shoot footage for an American Forests video about our Endangered Western Forests (EWF) initiative to raise awareness of the peril posed to Western forests by white pine blister rust
and the epidemic of mountain pine beetles.
The first of these enemies is a fungus, Cronartium ribicola, which causes the disease white pine blister rust
Working at American Forests, there is something I can do to help these forests survive the twin threats they're facing--an invasive disease, white pine blister rust
, and a scourge of insects, mountain pine beetle.