Abstract
The sensitivity of soybean (Glycine max L. Merr. cv Maple Arrow) seeds to dehydration changed during germination. Seeds were tolerant of dehydration to 10% moisture if dried at 6 hours of imbibition, but were susceptible to dehydration injury if dried at 36 hours of imbibition. Dehydration injury appeared as loss of germination, slower growth rates of isolated axes, hypocotyl and root curling, and altered membrane permeability. Increased electrolyte leakage due to dehydration treatment was observed only from isolated axes but not from cotyledons, suggesting that cotyledons are more tolerant of dehydration. The transition from a dehydration-tolerant to a dehydration-susceptible state coincided with radicle elongation. However, the prevention of cell elongation by osmotic treatment in polyethylene glycol (-6 bars) or imbibition in 20 micrograms per milliliter cycloheximide did not prevent the loss of dehydration tolerance suggesting that neither cell elongation nor cytoplasmic protein synthesis was responsible for the change in sensitivity of soybean seeds to dehydration. Furthermore, the rate of dehydration or rate of rehydration did not alter the response to the dehydration stress.
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Claims 9
Claim · model-written summary
Seeds were tolerant to 10% moisture after six hours of imbibition.
- Taxon
- soybean
Glycine maxt0 - Outcome
- tolerant of dehydratione0
- Value
- 10% moisturee0
- Qualifier
- 6 hours of imbibitione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds were tolerant of dehydration to 10% moisture if dried at 6 hours of imbibition”
t0“soybean”
Claim · model-written summary
Seeds were susceptible to dehydration after 36 hours of imbibition.
- Taxon
- soybeanGlycine maxt0
- Outcome
- susceptible to dehydration injurye0
- Qualifier
- 36 hours of imbibitione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were susceptible to dehydration injury if dried at 36 hours of imbibition”
t0“soybean”
Claim · model-written summary
Dehydration injury included loss of germination and slower isolated-axis growth.
- Taxon
- soybeanGlycine maxt0
- Outcome
- loss of germination, slower growth rates of isolated axese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dehydration injury appeared as loss of germination, slower growth rates of isolated axes”
t0“soybean”
Claim · model-written summary
Dehydration injury included hypocotyl and root curling and altered permeability.
- Taxon
- soybeanGlycine maxt0
- Outcome
- hypocotyl and root curling, and altered membrane permeabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hypocotyl and root curling, and altered membrane permeability”
t0“soybean”
Claim · model-written summary
Dehydration increased electrolyte leakage from isolated axes but not cotyledons.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- isolated axese0
- Outcome
- electrolyte leakagee0
- Direction
- Increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased electrolyte leakage due to dehydration treatment was observed only from isolated axes but not from cotyledons”
t0“soybean”
Claim · model-written summary
Loss of dehydration tolerance coincided with radicle elongation.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- radiclee0
- Outcome
- transition from a dehydration-tolerant to a dehydration-susceptible statee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transition from a dehydration-tolerant to a dehydration-susceptible state coincided with radicle elongation”
t0“soybean”
Claim · model-written summary
Preventing elongation with polyethylene glycol did not prevent tolerance loss.
- Taxon
- soybeanGlycine maxt0
- Treatment
- osmotic treatment in polyethylene glycol (-6 bars)e0
- Outcome
- loss of dehydration tolerancee0
- Direction
- did not prevente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“prevention of cell elongation by osmotic treatment in polyethylene glycol (-6 bars) or imbibition in 20 micrograms per milliliter cycloheximide did not prevent the loss of dehydration tolerance”
t0“soybean”
Claim · model-written summary
Cycloheximide did not prevent tolerance loss.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 20 micrograms per milliliter cycloheximidee0
- Outcome
- loss of dehydration tolerancee0
- Direction
- did not prevente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“imbibition in 20 micrograms per milliliter cycloheximide did not prevent the loss of dehydration tolerance”
t0“soybean”
Claim · model-written summary
Dehydration and rehydration rates did not alter stress response.
- Taxon
- soybeanGlycine maxt0
- Treatment
- rate of dehydration or rate of rehydratione0
- Outcome
- response to the dehydration stresse0
- Direction
- did not altere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the rate of dehydration or rate of rehydration did not alter the response to the dehydration stress”
t0“soybean”
The same questions in other papers
poly(ethylene glycol) · disease · Glycine max (soybean)Positive and negative results
1 in the opposite direction
- 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.