Abstract
Cotton (Gossypium hirsutum L.) intact seedlings and isolated cotyledonary discs were exposed to chilling (4°C) under humid conditions which prevented dehydration. The damage resulting from chilling was estimated by means of electrolyte leakage and survival in whole seedlings and by the electrolyte leakage and necrotic areas in isolated cotyledonary discs. Also, the effect of chilling on membrane phospholipids and cellular reduced glutathione was determined. Within the first two and three days of chilling, there was a marked reduction in the reduced glutathione and membrane phospholipid levels without electrolyte loss and necrosis. This reduction was completely prevented by pretreatment with abscisic acid. Prolonging the chilling period resulted in decreased survival in whole seedlings and in progressive increase in electrolyte leakage and necrosis in isolated cotyledonary discs. Pretreatment with abscisic acid prior to chilling almost completely prevented this chilling injury when exposure to 4°C was less than 5 days. Even with longer chilling periods, the abscisic acid pretreatment greatly reduced the damage.
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Claims 6
Claim · model-written summary
Early chilling reduced reduced glutathione and membrane phospholipid levels without leakage or necrosis.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- chillinge0
- Outcome
- reduced glutathione and membrane phospholipid levelse0
- Direction
- reductione0
- Qualifier
- without electrolyte loss and necrosise0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Within the first two and three days of chilling, there was a marked reduction in the reduced glutathione and membrane phospholipid levels without electrolyte loss and necrosis.”
t0“cotton”
Claim · model-written summary
Abscisic acid pretreatment completely prevented the early biochemical reduction.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- pretreatment with abscisic acide0
- Outcome
- reduced glutathione and membrane phospholipid levelse1
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This reduction was completely prevented by pretreatment with abscisic acid.”
e1“reduced glutathione and membrane phospholipid levels”
t0“cotton”
Claim · model-written summary
Longer chilling reduced seedling survival.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Prolonging the chilling periode0
- Outcome
- survival in whole seedlingse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Prolonging the chilling period resulted in decreased survival in whole seedlings”
t0“cotton”
Claim · model-written summary
Longer chilling increased cotyledon electrolyte leakage and necrosis.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- isolated cotyledonary discse0
- Treatment
- Prolonging the chilling periode1
- Outcome
- electrolyte leakage and necrosise0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“progressive increase in electrolyte leakage and necrosis in isolated cotyledonary discs”
e1“Prolonging the chilling period”
t0“cotton”
Claim · model-written summary
Abscisic acid pretreatment almost completely prevented injury when chilling lasted under five days.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Pretreatment with abscisic acide0
- Outcome
- chilling injurye0
- Direction
- preventede0
- Qualifier
- less than 5 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment with abscisic acid prior to chilling almost completely prevented this chilling injury when exposure to 4°C was less than 5 days.”
t0“cotton”
Claim · model-written summary
Abscisic acid pretreatment greatly reduced injury under longer chilling.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- abscisic acid pretreatmente0
- Outcome
- damagee0
- Direction
- reducede0
- Qualifier
- longer chilling periodse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Even with longer chilling periods, the abscisic acid pretreatment greatly reduced the damage.”
t0“cotton”
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See all 7 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.