Abstract
Hydroponic culture experiments were conducted with both resistant and susceptible cucumber varieties to investigate the effect of silicon(Si) addition and inoculation with Sphaerotheca fuliginea on the dynamic changes of phenylalanine ammonia-lyase(PAL) activity,ferulic acid,lignin and chlorogenic acid content of cucumber leaves.The results showed that no significant difference was observed in the activity of PAL and the content of ferulic acid,lignin and chlorogenic acid between the Si-supplied(Si+) and Si-deprived(Si-) cucumber plants when the plants were not inoculated with Sphaerotheca fuliginea.However,when the plants were inoculated,the activity of PAL and the content of ferulic acid,lignin and chlorogenic acid were significantly increased in both cucumber cultivars,but the activity of PAL in resistant cucumber was higher in comparison with susceptible cucumber.Accompanied with the increase of PAL activity,ferulic acid,lignin and chlorogenic acid in cucumber leaves accumulated rapidly.The activity of PAL in the leaves of Si+ plants was significantly increased in susceptible cucumber cultivar after inoculation,but not in resistant cultivar.The disease index was significantly decreased by Si-supplied after inoculation with relative against efficiency being 41.56%.Si addition improved the ability of resistance to powdery mildew.
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Claims 5
Claim · model-written summary
Without fungal inoculation, silicon did not significantly change PAL activity or ferulic acid, lignin and chlorogenic acid content.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- Si-supplied(Si+)e0
- Interactor
- Sphaerotheca fuliginea
Podosphaera fuligineae0pathogen - Outcome
- activity of PAL and the content of ferulic acid,lignin and chlorogenic acide0
- Direction
- no significant differencee0
- Comparator
- Si-deprived(Si-)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant difference was observed in the activity of PAL and the content of ferulic acid,lignin and chlorogenic acid between the Si-supplied(Si+) and Si-deprived(Si-) cucumber plants when the plants were not inoculated with Sphaerotheca fuliginea.”
Claim · model-written summary
Fungal inoculation significantly increased PAL activity and ferulic acid, lignin and chlorogenic acid content in both cucumber cultivars.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- inoculation with Sphaerotheca fuligineae1
- Interactor
- Sphaerotheca fuligineaPodosphaera fuligineae1pathogen
- Outcome
- activity of PAL and the content of ferulic acid,lignin and chlorogenic acide0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the plants were inoculated,the activity of PAL and the content of ferulic acid,lignin and chlorogenic acid were significantly increased in both cucumber cultivars”
e1“inoculation with Sphaerotheca fuliginea”
Claim · model-written summary
Resistant cucumber had higher PAL activity than susceptible cucumber after inoculation.
- Taxon
- cucumberCucumis sativuse0
- Material
- resistant cucumbere0
- Outcome
- activity of PALe0
- Direction
- highere0
- Comparator
- susceptible cucumbere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activity of PAL in resistant cucumber was higher in comparison with susceptible cucumber.”
Claim · model-written summary
After inoculation, silicon increased PAL activity in susceptible cucumber but not resistant cucumber.
- Taxon
- cucumberCucumis sativuse0
- Material
- susceptible cucumber cultivare0
- Treatment
- Si+e0
- Outcome
- activity of PALe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activity of PAL in the leaves of Si+ plants was significantly increased in susceptible cucumber cultivar after inoculation,but not in resistant cultivar.”
Claim · model-written summary
Silicon lowered the cucumber disease index after inoculation, with 41.56% relative control efficiency.
- Taxon
- CucumberCucumis sativust0
- Treatment
- Si-suppliede0
- Outcome
- disease indexe0
- Direction
- decreasede0
- Value
- 41.56%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The disease index was significantly decreased by Si-supplied after inoculation with relative against efficiency being 41.56%.”
t0“Cucumber”
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