Abstract
The influence of Pratylenchus penetrans on the incidence and severity of Verticillium wilt was examined in the potato cultivars 'Kennebec', 'Katahdin', and 'Abnaki'. Single-stem plants were grown in soil maintained at a temperature of 22 +/- 1 C. Axenically cultured nematodes were suspended in water and introduced to the soil, at a rate of ca 5,000/25.4-cm pot, through holes made around each stem. Ten days after infestation with nematodes, conidial suspensions of Verticillium albo-atrum were introduced into the soil at a rate of ca 1,000,000/pot. Among Katahdin plants, the severity of foliar symptoms was increased in the presence of both pathogens 2 and 3 weeks after soil intestation. During the remaining 5 weeks, severity of foliar symptoms was not different between plants infected by both pathogens and those infected by Verticillium alone. Within the wilt-susceptible cultivar Kennebec and the resistant eultivar Abnaki, no effects on foliar symptom severity were observed. When plant heights, shoot weights, and tuber yields were analyzed, a Pratylenchus-Verticillium interaction was not evident within any of the cultivars tested. Nematode populations in roots and rhizosphere were suppressed in Kennebec and Katahdin plants in the presence of Verticillium.
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Claims 5
Claim · model-written summary
Co-infection with both pathogens increased foliar symptom severity in Katahdin 2 and 3 weeks after soil infestation.
- Taxon
- potato
Solanum tuberosumt0 - Material
- Katahdine1
- Treatment
- presence of both pathogense1
- Interactor
- Pratylenchus penetrans
Pratylenchus penetranst0pathogen - Second interactor
- Verticillium albo-atrum
Verticillium albo-atrume2pathogen - Outcome
- severity of foliar symptomse1
- Direction
- increasede1
- Qualifier
- 2 and 3 weeks after soil intestatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The influence of Pratylenchus penetrans on the incidence and severity of verticillium wilt of potato.”
e1“Among Katahdin plants, the severity of foliar symptoms was increased in the presence of both pathogens 2 and 3 weeks after soil intestation.”
e2“conidial suspensions of Verticillium albo-atrum were introduced into the soil”
Claim · model-written summary
Over the remaining 5 weeks, foliar symptom severity did not differ between plants infected by both pathogens and plants infected by Verticillium alone.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- infected by both pathogense3
- Interactor
- Pratylenchus penetransPratylenchus penetranst0pathogen
- Second interactor
- VerticilliumVerticilliume3pathogen
- Outcome
- severity of foliar symptomse3
- Direction
- not differente3
- Qualifier
- During the remaining 5 weekse3
- Comparator
- infected by Verticillium alonee3
Not reportedMaterial
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The influence of Pratylenchus penetrans on the incidence and severity of verticillium wilt of potato.”
e3“During the remaining 5 weeks, severity of foliar symptoms was not different between plants infected by both pathogens and those infected by Verticillium alone”
Claim · model-written summary
In the susceptible cultivar Kennebec and the resistant cultivar Abnaki, the pathogen combination had no effect on foliar symptom severity.
- Taxon
- potatoSolanum tuberosumt0
- Material
- wilt-susceptible cultivar Kennebec and the resistant eultivar Abnakie4
- Outcome
- foliar symptom severitye4
- Direction
- no effectse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The influence of Pratylenchus penetrans on the incidence and severity of verticillium wilt of potato.”
e4“Within the wilt-susceptible cultivar Kennebec and the resistant eultivar Abnaki, no effects on foliar symptom severity were observed”
Claim · model-written summary
In Kennebec and Katahdin plants, nematode populations in roots and rhizosphere were suppressed in the presence of Verticillium.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Kennebec and Katahdin plantse5
- Treatment
- in the presence of Verticilliume5
- Second interactor
- VerticilliumVerticilliume5pathogen
- Outcome
- Nematode populations in roots and rhizospheree5
- Direction
- suppressede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The influence of Pratylenchus penetrans on the incidence and severity of verticillium wilt of potato.”
e5“Nematode populations in roots and rhizosphere were suppressed in Kennebec and Katahdin plants in the presence of Verticillium”
Claim · model-written summary
No Pratylenchus-Verticillium interaction was evident for plant height, shoot weight or tuber yield in any cultivar tested.
- Taxon
- potatoSolanum tuberosumt0
- Material
- cultivars testede6
- Interactor
- Pratylenchus
Pratylenchuse6pathogen - Second interactor
- VerticilliumVerticilliume6pathogen
- Outcome
- Pratylenchus-Verticillium interactione6
- Direction
- not evidente6
- Qualifier
- plant heights, shoot weights, and tuber yieldse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The influence of Pratylenchus penetrans on the incidence and severity of verticillium wilt of potato.”
e6“When plant heights, shoot weights, and tuber yields were analyzed, a Pratylenchus-Verticillium interaction was not evident within any of the cultivars tested”
The same questions in other papers
infection · Pratylenchus penetrans · Solanum tuberosum (potato)Results agree
2 papers in the same direction as this paper
- negative
- no effect
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.