Abstract
Salicylic acid is involved in the regulation of metabolic activity and defense mechanism in plants under various stress conditions. Present study was conducted to determine the effects of salicylic acid (10 to 500 μM) on seedling growth, development and nitrogen use efficiency in cucumber (Cucumis sativus L.) plants with or without nitrogen nutrient. Salicylic acid increased contents of chlorophyll, total non-structural carbohydrate and total nitrogen, as well as nitrate assimilation through the induction of nitrate reductase (EC 1.6.6.1) activity in isolated cucumber cotyledons. Accumulation of salicylic acid was two-fold higher in cotyledons without nitrate supply in comparison to that with nitrate supply. Further 50 μM of SA induced enhancement in seed germination and growth characteristics. However higher salicylic acid concentrations inhibited above physiological characteristics. Results show that, field application of salicylic acid need optimum physiological concentration (e.g., 50 μM) to increase nitrogen use efficiency particularly during germination and seedling growth.
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Claims 6
Claim · model-written summary
Salicylic acid increased chlorophyll, non-structural carbohydrate and total nitrogen contents in cucumber cotyledons.
- Taxon
- cucumber
Cucumis sativuse0 - Organ / stage
- cotyledonse0
- Treatment
- Salicylic acide0
- Outcome
- contents of chlorophyll, total non-structural carbohydrate and total nitrogene0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salicylic acid increased contents of chlorophyll, total non-structural carbohydrate and total nitrogen, as well as nitrate assimilation through the induction of nitrate reductase (EC 1.6.6.1) activity in isolated cucumber cotyledons”
Claim · model-written summary
Salicylic acid increased nitrate assimilation through nitrate reductase activity in cucumber cotyledons.
- Taxon
- cucumberCucumis sativuse0
- Organ / stage
- cotyledonse0
- Treatment
- Salicylic acide0
- Gene
- nitrate reductase (EC 1.6.6.1)e0
- Outcome
- nitrate assimilatione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salicylic acid increased contents of chlorophyll, total non-structural carbohydrate and total nitrogen, as well as nitrate assimilation through the induction of nitrate reductase (EC 1.6.6.1) activity in isolated cucumber cotyledons”
Claim · model-written summary
Salicylic acid accumulation was two-fold higher without nitrate supply.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- cotyledonse0
- Treatment
- without nitrate supplye0
- Outcome
- Accumulation of salicylic acide0
- Direction
- highere0
- Value
- two-folde0
- Comparator
- with nitrate supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accumulation of salicylic acid was two-fold higher in cotyledons without nitrate supply in comparison to that with nitrate supply”
t0“CUCUMBER”
Claim · model-written summary
50 μM SA enhanced seed germination and growth characteristics.
- Taxon
- CUCUMBERCucumis sativust0
- Treatment
- 50 μM of SAe0
- Outcome
- seed germination and growth characteristicse0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“50 μM of SA induced enhancement in seed germination and growth characteristics”
t0“CUCUMBER”
Claim · model-written summary
Higher salicylic acid concentrations inhibited those physiological characteristics.
- Taxon
- CUCUMBERCucumis sativust0
- Treatment
- higher salicylic acid concentrationse0
- Outcome
- physiological characteristicse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However higher salicylic acid concentrations inhibited above physiological characteristics”
t0“CUCUMBER”
Claim · model-written summary
The authors recommend an optimum salicylic acid concentration around 50 μM to increase nitrogen use efficiency.
- Taxon
- CUCUMBERCucumis sativust0
- Treatment
- salicylic acide0
- Outcome
- optimum physiological concentration (e.g., 50 μM) to increase nitrogen use efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field application of salicylic acid need optimum physiological concentration (e.g., 50 μM) to increase nitrogen use efficiency particularly during germination and seedling growth”
t0“CUCUMBER”
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