Abstract
The inoculation experiments on pine seedlings and saplings with the pine wood nematode, Bursaphelenchus xylophilus, were conducted to clarify the relations between nematode numbers and disease development in host plant at the initial stage of pathogenesis. The branch inoculated with nematodes was cut off at various intervals after inoculation. Cutting the branch 1 day after inoculation resulted in the delayed disease development on 4-year-old Pinus densiflora and P. thunbergii and did not cause disease for 9-year-old P. thunbergii. Disease development in seedlings and saplings, whose inoculated branches were cut 3 days after inouculation or later, was similar to the controls which were left without cutting. There were no significant differences in the numbers of dispersing individuals over various parts of tree between the two removal times of inoculated branches; 1 day and 3 days after inoculation. More advanced pathological responses of the inoculated branch were histopathologically observed on 3 days or afterwards than on 1 day after inoculation. The present experiments suggest that the pathological responses caused by the nematode activities at the infection site prevailed in the tree and reached a certain extent enough to initiate disease development as early as 3 days after inoculation.
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Claims 6
Claim · model-written summary
Branch removal one day after inoculation delayed disease in four year old P. densiflora and P. thunbergii.
- Taxon
- Pinus densiflora
Pinus densiflorae0 - Treatment
- Cutting the branch 1 day after inoculatione0
- Interactor
- pine wood nematode
Bursaphelenchus xylophilust0pathogen - Outcome
- disease developmente0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cutting the branch 1 day after inoculation resulted in the delayed disease development on 4-year-old Pinus densiflora and P. thunbergii and did not cause disease for 9-year-old P. thunbergii.”
t0“pine trees induced by the pine wood nematode, Bursaphelenchus xylophilus”
Claim · model-written summary
One day branch removal did not cause disease in nine year old P. thunbergii.
- Taxon
- P. thunbergii
Pinus thunbergiie0 - Organ / stage
- 9-year-olde0
- Treatment
- Cutting the branch 1 day after inoculatione0
- Interactor
- pine wood nematodeBursaphelenchus xylophilust0pathogen
- Outcome
- did not cause diseasee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cutting the branch 1 day after inoculation resulted in the delayed disease development on 4-year-old Pinus densiflora and P. thunbergii and did not cause disease for 9-year-old P. thunbergii.”
t0“pine trees induced by the pine wood nematode, Bursaphelenchus xylophilus”
Claim · model-written summary
Removal three days or later gave disease development similar to uncut controls.
- Treatment
- cut 3 days after inouculation or latere0
- Outcome
- Disease developmente0
- Direction
- similare0
- Comparator
- controls which were left without cuttinge0
PinusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Disease development in seedlings and saplings, whose inoculated branches were cut 3 days after inouculation or later, was similar to the controls which were left without cutting.”
t0“pine trees induced by the pine wood nematode, Bursaphelenchus xylophilus”
Claim · model-written summary
Dispersing nematode numbers did not significantly differ between one and three day removals.
- Treatment
- 1 daye0
- Outcome
- numbers of dispersing individuals over various parts of treee0
- Direction
- no significant differencese0
- Comparator
- 3 days after inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant differences in the numbers of dispersing individuals over various parts of tree between the two removal times of inoculated branches; 1 day and 3 days after inoculation.”
t0“pine trees induced by the pine wood nematode, Bursaphelenchus xylophilus”
Claim · model-written summary
Pathological responses were more advanced at three days or later than at one day.
- Outcome
- pathological responses of the inoculated branche0
- Direction
- More advancede0
- Comparator
- 1 day after inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“More advanced pathological responses of the inoculated branch were histopathologically observed on 3 days or afterwards than on 1 day after inoculation.”
t0“pine trees induced by the pine wood nematode, Bursaphelenchus xylophilus”
Claim · model-written summary
Nematode induced local pathology may initiate disease by three days after inoculation.
- Outcome
- disease developmente0
- Qualifier
- pathological responses caused by the nematode activities at the infection sitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present experiments suggest that the pathological responses caused by the nematode activities at the infection site prevailed in the tree and reached a certain extent enough to initiate disease development as early as 3 days after inoculation.”
t0“pine trees induced by the pine wood nematode, Bursaphelenchus xylophilus”
The same questions in other papers
inoculation · Bursaphelenchus xylophilus · Pinus densiflora (Japanese red pine)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
1 paper more in this group
See all 5 papers →inoculation · Bursaphelenchus xylophilus · Pinus thunbergii (Japanese black pine)Positive and negative results
4 in the opposite direction
- negative
- negative
- negative
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.