Abstract
The mathematical model of host–parasite relations suggested previously by the authors was applied to analyze the formation of the aggregated distribution of parasites in the case of the host plant–parasitic nematode system. For nearly the same conditions and empirical infection levels, nematode abundances in the host population followed the gamma distribution. Exposure to temperature stresses modifies the resistance of the plant population to infection. Experiments with prolonged chilling of potato plants prior to nematode infestation revealed no statistically reliable increase in the share of resistant plants compared to the control, although the mean and the range of variation of the infection rate, as well as the aggregation of the parasite distribution, decreased. Short-term chilling of the plants prior to infestation led to a reliable decrease in the mean abundance of parasites and to the lowest aggregation of the parasitic nematode in the host plant population. The results of this study showed that this temperature stress caused potatoes to develop a reliably high and uniform resistance to the nematode.
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Claims 7
Claim · model-written summary
Nematode abundance across the plant host population followed a gamma distribution under similar conditions and infection levels.
Verbatim
e0“For nearly the same conditions and empirical infection levels, nematode abundances in the host population followed the gamma distribution”
t0“Host Plant”
Claim · model-written summary
Prolonged chilling did not reliably raise the share of resistant potato plants versus controls.
- Taxon
- potato plants
Solanum tuberosume0 - Treatment
- prolonged chillinge0
- Outcome
- share of resistant plantse0
- Direction
- no statistically reliable increasee0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiments with prolonged chilling of potato plants prior to nematode infestation revealed no statistically reliable increase in the share of resistant plants compared to the control”
Claim · model-written summary
Prolonged chilling decreased mean potato nematode infection rate.
- Taxon
- potato plantsSolanum tuberosume0
- Treatment
- prolonged chillinge0
- Outcome
- mean and the range of variation of the infection ratee1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“prolonged chilling of potato plants prior to nematode infestation”
e1“the mean and the range of variation of the infection rate, as well as the aggregation of the parasite distribution, decreased”
Claim · model-written summary
Prolonged chilling decreased aggregation of potato nematodes.
- Taxon
- potato plantsSolanum tuberosume0
- Treatment
- prolonged chillinge0
- Outcome
- aggregation of the parasite distributione1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“prolonged chilling of potato plants prior to nematode infestation”
e1“aggregation of the parasite distribution, decreased”
Claim · model-written summary
Short term chilling decreased mean nematode abundance in potatoes.
- Taxon
- Host Plantt0
- Treatment
- Short-term chillinge0
- Interactor
- Parasitic Nematodet0parasite
- Outcome
- mean abundance of parasitese0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“Short-term chilling of the plants prior to infestation led to a reliable decrease in the mean abundance of parasites”
t0“Parasitic Nematode Abundance Aggregation as a Mechanism of the Adaptive Response of the Host Plant to Temperature Variations”
Claim · model-written summary
Short term chilling produced the lowest nematode aggregation in the potato host population.
- Taxon
- Host Plantt0
- Treatment
- Short-term chillinge0
- Interactor
- parasitic nematodee0parasite
- Outcome
- aggregation of the parasitic nematodee0
- Direction
- loweste0
Not reportedComparator
Verbatim
e0“Short-term chilling of the plants prior to infestation led to a reliable decrease in the mean abundance of parasites and to the lowest aggregation of the parasitic nematode in the host plant population”
t0“Host Plant”
Claim · model-written summary
The temperature stress was interpreted to induce high, uniform potato resistance to nematodes.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- temperature stresse0
- Outcome
- reliably high and uniform resistance to the nematodee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this temperature stress caused potatoes to develop a reliably high and uniform resistance to the nematode”
The same questions in other papers
cold · Nematoda · Solanum tuberosum (potato)Positive and negative results
1 in the opposite direction
- no effect
cold · pest · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
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.