Abstract
Cucumber is a warm season crop that suffers from chilling injury at temperatures below 10°C. In recent years, jasmonates have been used for reduction of chilling injuries in plants. An experiment was, therefore, conducted to test whether methyl jasmonate (MeJA) application at various concentrations (0, 0.05, 0.1 and 0.15 mM) through seed soaking or foliar spray would protect cucumber seedlings, subjected to chilling stress. Results showed that MeJA application decreased chilling index, ion leakage, malondialdehyde content and hydrogen peroxide free radical and increased growth parameters, proline contents, chlorophylls contents and antioxidant activity. Although, seed soaking method provided better protection compared to foliar spray method, the highest cold tolerance was obtained with 0.15mM MeJA application in both application methods that caused low level of chilling index (1.67), malondialdehyde content (0.11 nm g-1 FW), hydrogen peroxide free radical (0.22 nm g-1 FW) and ion leakage (32.87%). In general, it may be concluded that MeJA could be used effectively to protect cucumber seedling from damaging effects of chilling stress at the early stages of growth.
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Claims 9
Claim · model-written summary
Methyl jasmonate lowered chilling injury indicators in cucumber seedlings.
- Taxon
- Cucumber
Cucumis sativust0 - Treatment
- MeJA applicatione0
- Outcome
- chilling index, ion leakage, malondialdehyde content and hydrogen peroxide free radicale0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA application decreased chilling index, ion leakage, malondialdehyde content and hydrogen peroxide free radical”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Methyl jasmonate raised growth, proline, chlorophyll and antioxidant measures in cucumber seedlings.
- Taxon
- CucumberCucumis sativust0
- Treatment
- MeJA applicatione1
- Outcome
- growth parameters, proline contents, chlorophylls contents and antioxidant activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased growth parameters, proline contents, chlorophylls contents and antioxidant activity”
e1“MeJA application decreased”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Seed soaking protected cucumber better than foliar spray.
- Taxon
- CucumberCucumis sativust0
- Treatment
- seed soaking methode0
- Outcome
- protectione0
- Direction
- bettere0
- Comparator
- foliar spray methode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed soaking method provided better protection compared to foliar spray method”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
The 0.15 mM dose gave the highest cold tolerance with either application method.
- Taxon
- CucumberCucumis sativust0
- Treatment
- 0.15mM MeJA applicatione0
- Outcome
- cold tolerancee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest cold tolerance was obtained with 0.15mM MeJA application in both application methods”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
At 0.15 mM methyl jasmonate, chilling index was 1.67.
- Taxon
- CucumberCucumis sativust0
- Outcome
- chilling indexe0
- Direction
- lowe0
- Value
- 1.67e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low level of chilling index (1.67)”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
At 0.15 mM methyl jasmonate, malondialdehyde content was 0.11 nm g-1 FW.
- Taxon
- CucumberCucumis sativust0
- Outcome
- malondialdehyde contente0
- Value
- 0.11 nm g-1 FWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“malondialdehyde content (0.11 nm g-1 FW)”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
At 0.15 mM methyl jasmonate, hydrogen peroxide free radical was 0.22 nm g-1 FW.
- Taxon
- CucumberCucumis sativust0
- Outcome
- hydrogen peroxide free radicale0
- Value
- 0.22 nm g-1 FWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hydrogen peroxide free radical (0.22 nm g-1 FW)”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
At 0.15 mM methyl jasmonate, ion leakage was 32.87%.
- Taxon
- CucumberCucumis sativust0
- Outcome
- ion leakagee0
- Value
- 32.87%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ion leakage (32.87%)”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
The authors recommend methyl jasmonate to protect young cucumber seedlings against chilling.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- protect cucumber seedling from damaging effects of chilling stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA could be used effectively to protect cucumber seedling from damaging effects of chilling stress at the early stages of growth”
The same questions in other papers
(-)-methyl jasmonate · physiology: oxidative · Cucumis sativus (cucumber)Results agree
2 papers in the same direction as this paper
- positive
- positive
seed treatment · control · Cucumis sativus (cucumber)Results agree
3 papers in the same direction as this paper
- positive
- 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.