Abstract
【Objective】The purpose of this paper is to investigate the mechanism of drought induced cross adaptation to low temperature stress in cucumber(Cucumis sativa L) seedlings.【Method】 'Jinyou 3' cucumber seedlings were used as experimental materials.Seedlings were pretreated under drought condition,which simulated with 10% polyethylene glycol(PEG) for 2 d.Recovered 2 d later,the pretreated and non-pretreated seedlings(control) were displaced into growth chambers and treated under low temperature(day/night temperature is 8℃/5℃).【Result】 The results showed that low temperature stress significantly decreased the relative water content,water potential and osmotic potential,while increased proline,soluble sugar and soluble protein contents.Pretreated with 10% PEG before exposure to stress condition,cucumber seedlings showed a significant low decreased degree in relative water content,water potential and osmotic potential,while high increased degree in proline,soluble sugar and soluble protein contents,in comparison with non-pretreated seedlings.At the end of the experiment(7 d),the relative water content of seedlings pretreated with PEG increased by 24.7 percentage points,the water potential and osmotic potential increased by 0.35 MPa and 0.13 MPa,respectively,and the proline,soluble sugar and soluble protein contents increased by 41.4 %,80.8 % and 260.7 %,respectively,in comparison with non-pretreated seedlings.【Conclusion】 Drought pretreatment could induce the cross adaptation to low temperature in cucumber seedlings,and the adaptation might be related to the observed increase in osmoregulation capability.
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Claims 12
Claim · model-written summary
Low temperature stress significantly decreased relative water content, water potential and osmotic potential in cucumber seedlings.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- low temperature stresse1
- Outcome
- relative water content,water potential and osmotic potentiale1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“low temperature stress significantly decreased the relative water content,water potential and osmotic potential,while increased proline,soluble sugar and soluble protein contents”
Claim · model-written summary
Low temperature stress increased proline, soluble sugar and soluble protein contents in cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- low temperature stresse1
- Outcome
- proline,soluble sugar and soluble protein contentse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“low temperature stress significantly decreased the relative water content,water potential and osmotic potential,while increased proline,soluble sugar and soluble protein contents”
Claim · model-written summary
PEG pretreatment gave a smaller low-temperature decrease in relative water content, water potential and osmotic potential than no pretreatment.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Pretreated with 10% PEGe1
- Outcome
- relative water content,water potential and osmotic potentiale1
- Direction
- low decreased degreee1
- Comparator
- non-pretreated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“Pretreated with 10% PEG before exposure to stress condition,cucumber seedlings showed a significant low decreased degree in relative water content,water potential and osmotic potential,while high increased degree in proline,soluble sugar and soluble protein contents,in comparison with non-pretreated seedlings”
Claim · model-written summary
PEG pretreatment gave a higher low-temperature increase in proline, soluble sugar and soluble protein contents than no pretreatment.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Pretreated with 10% PEGe1
- Outcome
- proline,soluble sugar and soluble protein contentse1
- Direction
- high increased degreee1
- Comparator
- non-pretreated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“Pretreated with 10% PEG before exposure to stress condition,cucumber seedlings showed a significant low decreased degree in relative water content,water potential and osmotic potential,while high increased degree in proline,soluble sugar and soluble protein contents,in comparison with non-pretreated seedlings”
Claim · model-written summary
At 7 days, relative water content of PEG-pretreated seedlings was 24.7 percentage points higher than in non-pretreated seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- pretreated with PEGe2
- Outcome
- relative water contente2
- Direction
- increasede2
- Value
- 24.7 percentage pointse2
- Comparator
- non-pretreated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“Pretreated with 10% PEG before exposure to stress condition,cucumber seedlings showed a significant low decreased degree in relative water content,water potential and osmotic potential,while high increased degree in proline,soluble sugar and soluble protein contents,in comparison with non-pretreated seedlings”
e2“the relative water content of seedlings pretreated with PEG increased by 24.7 percentage points”
Claim · model-written summary
At 7 days, water potential of PEG-pretreated seedlings increased by 0.35 MPa compared with non-pretreated seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- pretreated with PEGe2
- Outcome
- water potentiale3
- Direction
- increasede3
- Value
- 0.35 MPae3
- Comparator
- non-pretreated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“Pretreated with 10% PEG before exposure to stress condition,cucumber seedlings showed a significant low decreased degree in relative water content,water potential and osmotic potential,while high increased degree in proline,soluble sugar and soluble protein contents,in comparison with non-pretreated seedlings”
e2“the relative water content of seedlings pretreated with PEG increased by 24.7 percentage points”
e3“the water potential and osmotic potential increased by 0.35 MPa and 0.13 MPa,respectively”
Claim · model-written summary
At 7 days, osmotic potential of PEG-pretreated seedlings increased by 0.13 MPa compared with non-pretreated seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- pretreated with PEGe2
- Outcome
- osmotic potentiale3
- Direction
- increasede3
- Value
- 0.13 MPae3
- Comparator
- non-pretreated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“Pretreated with 10% PEG before exposure to stress condition,cucumber seedlings showed a significant low decreased degree in relative water content,water potential and osmotic potential,while high increased degree in proline,soluble sugar and soluble protein contents,in comparison with non-pretreated seedlings”
e2“the relative water content of seedlings pretreated with PEG increased by 24.7 percentage points”
e3“the water potential and osmotic potential increased by 0.35 MPa and 0.13 MPa,respectively”
Claim · model-written summary
At 7 days, proline of PEG-pretreated seedlings increased by 41.4% compared with non-pretreated seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- pretreated with PEGe2
- Outcome
- prolinee3
- Direction
- increasede3
- Value
- 41.4 %e3
- Comparator
- non-pretreated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“Pretreated with 10% PEG before exposure to stress condition,cucumber seedlings showed a significant low decreased degree in relative water content,water potential and osmotic potential,while high increased degree in proline,soluble sugar and soluble protein contents,in comparison with non-pretreated seedlings”
e2“the relative water content of seedlings pretreated with PEG increased by 24.7 percentage points”
e3“the proline,soluble sugar and soluble protein contents increased by 41.4 %,80.8 % and 260.7 %,respectively”
Claim · model-written summary
At 7 days, soluble sugar of PEG-pretreated seedlings increased by 80.8% compared with non-pretreated seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- pretreated with PEGe2
- Outcome
- soluble sugare3
- Direction
- increasede3
- Value
- 80.8 %e3
- Comparator
- non-pretreated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“Pretreated with 10% PEG before exposure to stress condition,cucumber seedlings showed a significant low decreased degree in relative water content,water potential and osmotic potential,while high increased degree in proline,soluble sugar and soluble protein contents,in comparison with non-pretreated seedlings”
e2“the relative water content of seedlings pretreated with PEG increased by 24.7 percentage points”
e3“the proline,soluble sugar and soluble protein contents increased by 41.4 %,80.8 % and 260.7 %,respectively”
Claim · model-written summary
At 7 days, soluble protein of PEG-pretreated seedlings increased by 260.7% compared with non-pretreated seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- pretreated with PEGe2
- Outcome
- soluble proteine3
- Direction
- increasede3
- Value
- 260.7 %e3
- Comparator
- non-pretreated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“Pretreated with 10% PEG before exposure to stress condition,cucumber seedlings showed a significant low decreased degree in relative water content,water potential and osmotic potential,while high increased degree in proline,soluble sugar and soluble protein contents,in comparison with non-pretreated seedlings”
e2“the relative water content of seedlings pretreated with PEG increased by 24.7 percentage points”
e3“the proline,soluble sugar and soluble protein contents increased by 41.4 %,80.8 % and 260.7 %,respectively”
Claim · model-written summary
Drought pretreatment induces cross adaptation to low temperature in cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Drought pretreatmente2
- Outcome
- cross adaptation to low temperaturee2
- Direction
- inducee2
- Comparator
- non-pretreated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“Pretreated with 10% PEG before exposure to stress condition,cucumber seedlings showed a significant low decreased degree in relative water content,water potential and osmotic potential,while high increased degree in proline,soluble sugar and soluble protein contents,in comparison with non-pretreated seedlings”
e2“Drought pretreatment could induce the cross adaptation to low temperature in cucumber seedlings”
Claim · model-written summary
Cross adaptation may be related to the increased osmoregulation capability of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- the adaptatione1
- Qualifier
- osmoregulation capabilitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber(Cucumis sativa L) seedlings”
e1“the adaptation might be related to the observed increase in osmoregulation capability”
The same questions in other papers
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3 in the opposite direction
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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.