In northern Utah, Douglas-firs (Pseudotsuga menziesii [Mirb.] Franco) with symptoms of Rhabdocline needle blight had a significantly higher frequency of epicormic branching than did healthy trees. It is not known whether Rhabdocline infection stimulates epicormy, or whether the proliferation of epicormics increases resistance to the disease.
Lanner, Ronald M. and Bryan, James A.
"Association of Rhabdocline needle blight and epicormic branching in Douglas-fir,"
Great Basin Naturalist: Vol. 41
, Article 16.
Available at: http://scholarsarchive.byu.edu/gbn/vol41/iss4/16