Abstract
Laboratory experiments were established to study the influence of silicon on improvements in the defense response of cucumber seedlings to Pythium-induced damping-off disease. Supplementing cucumber seedlings with different concentrations of silicon (0, 100, 200, 500, 1000 and 2500 ppm) for 7 days prior to inoculation with P. aphanidermatum isolates did not result in a significant reduction in seedling mortality at 20 and 25 degrees C. Extending the period of supplementation to 14 days also did not result in any improvement of defense responses. In addition, mortality levels in the presence of silicon were not reduced when cucumber seedlings were inoculated with three isolates of P. aphanidermatum differing in their aggressiveness levels (weak, moderate and very aggressive). This could be related to a rapid infection by Pythium of cucumber seedlings in relation to a slower rate of induction of defense responses by silicon.
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Claims 3
Claim · model-written summary
Seven days of silicon supplementation did not significantly reduce cucumber seedling mortality after P. aphanidermatum inoculation at 20 and 25 degrees C.
- Taxon
- cucumber seedlings
Cucumis sativuse0 - Treatment
- silicon (0, 100, 200, 500, 1000 and 2500 ppm)e0
- Interactor
- P. aphanidermatumPythium aphanidermatume0pathogen
- Outcome
- seedling mortalitye0
- Direction
- did not result in a significant reductione0
- Qualifier
- 7 days prior to inoculatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplementing cucumber seedlings with different concentrations of silicon (0, 100, 200, 500, 1000 and 2500 ppm) for 7 days prior to inoculation with P. aphanidermatum isolates did not result in a significant reduction in seedling mortality at 20 and 25 degrees C.”
Claim · model-written summary
Extending silicon supplementation to 14 days did not improve cucumber seedling defense responses.
- Taxon
- CUCUMBER SEEDLINGSCucumis sativust0
- Treatment
- supplementation to 14 dayse0
- Outcome
- defense responsese0
- Direction
- did not result in any improvemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Extending the period of supplementation to 14 days also did not result in any improvement of defense responses.”
t0“CUCUMBER SEEDLINGS”
Claim · model-written summary
Silicon did not reduce mortality in cucumber seedlings inoculated with three P. aphanidermatum isolates of differing aggressiveness.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- silicone0
- Interactor
- P. aphanidermatumPythium aphanidermatume0pathogen
- Outcome
- mortality levelse0
- Direction
- were not reducede0
- Qualifier
- weak, moderate and very aggressivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mortality levels in the presence of silicon were not reduced when cucumber seedlings were inoculated with three isolates of P. aphanidermatum differing in their aggressiveness levels (weak, moderate and very aggressive).”
The same questions in other papers
silicon atom · Pythium aphanidermatum · Cucumis sativus (cucumber)Positive and negative results
2 in the opposite direction
- positive
- 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.