Mj. Linit et Dn. Kinn, INFLUENCE OF PINEWOOD NEMATODE (NEMATODA, APHELENCHOIDIDAE) INFECTIONON THE PREFORMED DEFENSIVE RESPONSE OF SHORTLEAF PINE, Environmental entomology, 25(5), 1996, pp. 1133-1139
The effect of pinewood nematode, Bursaphelenchus xylophilus (Steiner &
Buhrer) Nickle, infection on the preformed defensive response of shor
tleaf pines, Pinus echinata Miller, near Ashland, MO, was quantified d
uring 1993 and 1994. Each year, trees were inoculated with pinewood ne
matodes at a height of approximate to 8m above the ground. An equal nu
mber of control trees were inoculated with sterile, distilled water. O
leoresin flow was monitored on each tree 1, 2, and 3 mo after inoculat
ion. Oleoresin was collected from 2 wounds at each of 3 collection hei
ghts; approximate to 1.5, 4, and 7 m above the ground. Significant red
uctions in oleoresin flow were noted in the nematode-inoculated trees
during both years and at each collection height.