Abstract
Penetration of 3-day-old 'Kenland' red clover seedlings by Heterodera trifolii Goffart and Pratylenchus penetrans (Cobb) was investigated in 50-mm petri dishes on 1% agat or discs of Miracloth(R) (Chicopee Mills, Inc., New York, N.Y. 10018). Penetration by both nematodes increased arithmetically with increased numbers in the inoculum. H. trifolii larvae slowly penetrated all root tissue but in relatively low numbers, 25-30% of inocula. Swelling of larvae and formation of syncytia within roots was detectable 96 hr after inoculation. Initially, adults of P. penetrans preferentially penetrated the region 3-10 mm behind the root tip, but subsequently they invaded all along roots. P. penetrans penetration efficiency was high, 75-90% of inocula, and penetration was relatively rapid. When introduced simultaneously neither nematode affected the invasiveness of the other. Prior infection by H. trifolii did not affect the invasiveness of P. penetrans.
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Claims 7
Claim · model-written summary
Penetration by both nematodes increased with inoculum number.
- Taxon
- Red Clover
Trifolium pratenset0 - Treatment
- increased numbers in the inoculume0
- Interactor
- Heterodera trifoliiHeterodera trifoliit0pathogen
- Second interactor
- Pratylenchus penetrans
Pratylenchus penetranst0pathogen - Outcome
- Penetration by both nematodese0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Penetration by both nematodes increased arithmetically with increased numbers in the inoculum.”
t0“Red Clover Seedlings by Heterodera trifolii Goffart and Pratylenchus penetrans”
Claim · model-written summary
H. trifolii larvae penetrated all root tissue at 25-30% of inocula.
- Taxon
- Red CloverTrifolium pratenset0
- Interactor
- H. trifoliiHeterodera trifoliie0pathogen
- Outcome
- H. trifolii larvae slowly penetrated all root tissuee0
- Value
- 25-30% of inoculae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H. trifolii larvae slowly penetrated all root tissue but in relatively low numbers, 25-30% of inocula.”
t0“Red Clover”
Claim · model-written summary
Larval swelling and syncytia formed within roots by 96 hr.
- Taxon
- Red CloverTrifolium pratenset0
- Interactor
- Heterodera trifoliiHeterodera trifoliit0pathogen
- Outcome
- Swelling of larvae and formation of syncytia within rootse0
- Value
- 96 hre0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Swelling of larvae and formation of syncytia within roots was detectable 96 hr after inoculation.”
t0“Red Clover Seedlings by Heterodera trifolii”
Claim · model-written summary
P. penetrans adults initially favored 3-10 mm behind the root tip then invaded the full root.
- Taxon
- Red CloverTrifolium pratenset0
- Interactor
- P. penetransPratylenchus penetranse0pathogen
- Outcome
- preferentially penetrated the region 3-10 mm behind the root tipe0
- Value
- 3-10 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Initially, adults of P. penetrans preferentially penetrated the region 3-10 mm behind the root tip, but subsequently they invaded all along roots.”
t0“Red Clover”
Claim · model-written summary
P. penetrans penetration was rapid and reached 75-90% of inocula.
- Taxon
- Red CloverTrifolium pratenset0
- Interactor
- P. penetransPratylenchus penetranse0pathogen
- Outcome
- P. penetrans penetration efficiencye0
- Direction
- highe0
- Value
- 75-90% of inoculae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. penetrans penetration efficiency was high, 75-90% of inocula, and penetration was relatively rapid.”
t0“Red Clover”
Claim · model-written summary
Simultaneous introduction did not alter either nematode invasiveness.
- Taxon
- Red CloverTrifolium pratenset0
- Treatment
- introduced simultaneouslye0
- Interactor
- Heterodera trifoliiHeterodera trifoliit0pathogen
- Second interactor
- Pratylenchus penetransPratylenchus penetranst0pathogen
- Outcome
- invasiveness of the othere0
- Direction
- neither nematode affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When introduced simultaneously neither nematode affected the invasiveness of the other.”
t0“Red Clover Seedlings by Heterodera trifolii Goffart and Pratylenchus penetrans”
Claim · model-written summary
Prior H. trifolii infection did not affect P. penetrans invasiveness.
- Taxon
- Red CloverTrifolium pratenset0
- Treatment
- Prior infection by H. trifoliie0
- Interactor
- P. penetransPratylenchus penetranse0pathogen
- Second interactor
- H. trifoliiHeterodera trifoliie0pathogen
- Outcome
- invasiveness of P. penetranse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Prior infection by H. trifolii did not affect the invasiveness of P. penetrans.”
t0“Red Clover”
The same questions in other papers
infection · Pratylenchus penetrans · Trifolium pratense (red clover)Results agree
1 paper in the same direction as this paper
- negative
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.