Abstract
To determine whether chilling tolerance is related to cold acclimation, changes in physiological responses and activity of antioxidative enzymes were investigated in leaves of cucumber ( Cucumis sativus L.) grown in controlled environments. Plants were exposed to 15 °C (cold-acclimated) or 25 °C (nonacclimated) for 3 days, under 50 μmol·m -2 ·s -1 photosynthetic photon flux and 70% relative humidity. Plants were then exposed to 8 °C chilling temperature for 3 days, and allowed to recover in a growth chamber at 25 °C for 3 days. Measurements of leaf water content, cellular leakage, lipid peroxidation, chlorophyll a fluorescence, and quantum yield showed that cold-acclimated leaves were less affected by chilling compared to nonacclimated leaves. Cold-acclimated leaves recovered faster than nonacclimated leaves with regard to all variables examined. Catalase and ascorbate peroxidase activities were induced in cold-acclimated leaves, but not in nonacclimated leaves. These data indicate that cold acclimation increased chilling tolerance of cucumber in association with antioxidative enzymes.
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Claims 9
Claim · model-written summary
Cold acclimation lessened chilling impact on leaf water content.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- cold-acclimatede0
- Outcome
- leaf water contente0
- Direction
- less affectede0
- Comparator
- nonacclimatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Measurements of leaf water content, cellular leakage, lipid peroxidation, chlorophyll a fluorescence, and quantum yield showed that cold-acclimated leaves were less affected by chilling compared to nonacclimated leaves.”
t0“Cucumber”
Claim · model-written summary
Cold acclimation lessened chilling impact on cellular leakage.
- Taxon
- cucumberCucumis sativust0
- Treatment
- cold-acclimatede0
- Outcome
- cellular leakagee0
- Direction
- less affectede0
- Comparator
- nonacclimatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Measurements of leaf water content, cellular leakage, lipid peroxidation, chlorophyll a fluorescence, and quantum yield showed that cold-acclimated leaves were less affected by chilling compared to nonacclimated leaves.”
t0“Cucumber”
Claim · model-written summary
Cold acclimation lessened chilling impact on lipid peroxidation.
- Taxon
- cucumberCucumis sativust0
- Treatment
- cold-acclimatede0
- Outcome
- lipid peroxidatione0
- Direction
- less affectede0
- Comparator
- nonacclimatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Measurements of leaf water content, cellular leakage, lipid peroxidation, chlorophyll a fluorescence, and quantum yield showed that cold-acclimated leaves were less affected by chilling compared to nonacclimated leaves.”
t0“Cucumber”
Claim · model-written summary
Cold acclimation lessened chilling impact on chlorophyll a fluorescence.
- Taxon
- cucumberCucumis sativust0
- Treatment
- cold-acclimatede0
- Outcome
- chlorophyll a fluorescencee0
- Direction
- less affectede0
- Comparator
- nonacclimatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Measurements of leaf water content, cellular leakage, lipid peroxidation, chlorophyll a fluorescence, and quantum yield showed that cold-acclimated leaves were less affected by chilling compared to nonacclimated leaves.”
t0“Cucumber”
Claim · model-written summary
Cold acclimation lessened chilling impact on quantum yield.
- Taxon
- cucumberCucumis sativust0
- Treatment
- cold-acclimatede0
- Outcome
- quantum yielde0
- Direction
- less affectede0
- Comparator
- nonacclimatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Measurements of leaf water content, cellular leakage, lipid peroxidation, chlorophyll a fluorescence, and quantum yield showed that cold-acclimated leaves were less affected by chilling compared to nonacclimated leaves.”
t0“Cucumber”
Claim · model-written summary
Cold acclimated cucumber leaves recovered faster across examined variables.
- Taxon
- CucumberCucumis sativust0
- Treatment
- Cold-acclimatede0
- Outcome
- recoverede0
- Direction
- fastere0
- Comparator
- nonacclimatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cold-acclimated leaves recovered faster than nonacclimated leaves with regard to all variables examined.”
t0“Cucumber”
Claim · model-written summary
Catalase activity was induced only in cold acclimated leaves.
- Taxon
- CucumberCucumis sativust0
- Treatment
- cold-acclimatede0
- Gene
- Catalasee0
- Outcome
- Catalasee0
- Direction
- inducede0
- Comparator
- nonacclimatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Catalase and ascorbate peroxidase activities were induced in cold-acclimated leaves, but not in nonacclimated leaves.”
t0“Cucumber”
Claim · model-written summary
ascorbate peroxidase activity was induced only in cold acclimated leaves.
- Taxon
- CucumberCucumis sativust0
- Treatment
- cold-acclimatede0
- Gene
- ascorbate peroxidasee0
- Outcome
- ascorbate peroxidase activitiese0
- Direction
- inducede0
- Comparator
- nonacclimatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Catalase and ascorbate peroxidase activities were induced in cold-acclimated leaves, but not in nonacclimated leaves.”
t0“Cucumber”
Claim · model-written summary
Cold acclimation increased cucumber chilling tolerance in association with antioxidative enzymes.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cold acclimatione0
- Outcome
- chilling tolerancee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These data indicate that cold acclimation increased chilling tolerance of cucumber in association with antioxidative enzymes.”
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See all 21 papers →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.