Claim · model-written summary
Xylem water content of Pinus thunbergii began to decrease after nematode inoculation, relative to healthy trees.
- Taxon
- Pinus thunbergii
Pinus thunbergiie0 - Treatment
- nematode inoculatione1
- Interactor
- Bursaphelenchus xylophilus
Bursaphelenchus xylophiluse0pathogen - Outcome
- water contente1
- Direction
- decreasee1
- Comparator
- healthy treese3
Verbatim
e0“Abnormal ascent of xylem-sap was investigated after the inoculation of Pinus thunbergii with Bursaphelenchus xylophilus”
e1“When sap-flow was disturbed two weeks after nematode inoculation, the water content began to decrease”
e3“Anatomical changes in pine tissue and increase in nematode number were delayed until the fourth week when water contents of xylem decreased to about 30% of healthy trees”
Title
Effects of cavitation on the development of pine wilt disease caused by Bursaphelenchus xylophilus.
Keiko KURODA; Toshihiro YAMADA; Kazuhiko MINEO; et al. Japanese Journal of Phytopathology 1988. doi:10.3186/jjphytopath.54.606
Other claims from this paper (6)
- Observation Tracheids in the affected areas of Pinus thunbergii showed cavitation, containing gas instead of water.
- Observation Anatomical changes and nematode number increase in Pinus thunbergii were delayed until the fourth week after inoculation.
- Mechanism Water deficit induced by cavitation is judged a major factor in lethality of pine trees.
- Mechanism Necrosis of cambium and phloem may be caused by water shortage next to cavitated tracheids.
- Mechanism Mechanical plugging of water flow by leaked resin does not appear to be a major factor in pine wilt disease induction.
- Observation Hydrophobic substances may have been incorporated in cavitation areas of Pinus thunbergii.