Abstract
Abstract The role of free radical-induced damage as a cause of loss of vigour in seeds is by no means resolved. In this contribution, the effects of environmental treatments known to reduce viability rapidly were compared with the effects of long-term, low-temperature storage on germination, hypocotyl growth and free radical accumulation and lipid peroxidation in soybean seeds. Accelerated aging was achieved by incubating seeds at 35°C and 1% relative humidity over H 2 SO 4 for up to 69 days in the light and in darkness. In contrast, seeds under long-term storage were maintained at 5°C and 6% moisture content in darkness for up to 6 years. At 35°C there were rapid and significant reductions in rates of seed germination and hypocotyl extension. Loss of viability and declining vigour were associated with increases in lipid peroxidation and free radical build-up but the latter, surprisingly, was largely confined to the testa rather than the cotyledon. Exposure to light greatly enhanced lipid peroxidation and increased organic free radical accumulation in the translucent testas of seeds, but not in the cotyledons. Similar responses to light were recorded in testas detached from seeds. These results show that in soybean the testa is a significant locus of free radical degenerative events induced by high temperature combined with low moisture.
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Claims 8
Claim · model-written summary
At 35°C, seed germination rates and hypocotyl extension rates were significantly reduced in soybean seeds.
- Taxon
- soybean
Glycine maxt0 - Treatment
- 35°Ce0
- Outcome
- rates of seed germination and hypocotyl extensione0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Free radical accumulation and lipid peroxidation in testas of rapidly aged soybean seeds: a light-promoted process”
e0“At 35°C there were rapid and significant reductions in rates of seed germination and hypocotyl extension”
Claim · model-written summary
Loss of viability and declining vigour in accelerated-aged soybean seeds were associated with increased lipid peroxidation and free radical build-up.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Accelerated aginge2
- Outcome
- lipid peroxidation and free radical build-upe1
- Direction
- increasese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Free radical accumulation and lipid peroxidation in testas of rapidly aged soybean seeds: a light-promoted process”
e1“Loss of viability and declining vigour were associated with increases in lipid peroxidation and free radical build-up”
e2“Accelerated aging was achieved by incubating seeds at 35°C”
Claim · model-written summary
Free radical build-up in aged soybean seeds was largely confined to the testa rather than the cotyledon.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- testae3
- Outcome
- free radical build-upe1
- Direction
- largely confinede3
- Comparator
- the cotyledone3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Free radical accumulation and lipid peroxidation in testas of rapidly aged soybean seeds: a light-promoted process”
e1“Loss of viability and declining vigour were associated with increases in lipid peroxidation and free radical build-up”
e3“was largely confined to the testa rather than the cotyledon”
Claim · model-written summary
Exposure to light greatly enhanced lipid peroxidation in the translucent testas of soybean seeds.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- translucent testase4
- Treatment
- Exposure to lighte4
- Outcome
- lipid peroxidatione4
- Direction
- greatly enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Free radical accumulation and lipid peroxidation in testas of rapidly aged soybean seeds: a light-promoted process”
e4“Exposure to light greatly enhanced lipid peroxidation and increased organic free radical accumulation in the translucent testas of seeds, but not in the cotyledons”
Claim · model-written summary
Exposure to light increased organic free radical accumulation in the translucent testas of soybean seeds.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- translucent testase4
- Treatment
- Exposure to lighte4
- Outcome
- organic free radical accumulatione4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Free radical accumulation and lipid peroxidation in testas of rapidly aged soybean seeds: a light-promoted process”
e4“Exposure to light greatly enhanced lipid peroxidation and increased organic free radical accumulation in the translucent testas of seeds, but not in the cotyledons”
Claim · model-written summary
Exposure to light did not increase lipid peroxidation in soybean cotyledons.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- cotyledonse4
- Treatment
- Exposure to lighte4
- Outcome
- lipid peroxidatione4
- Direction
- no_changeinferrede4
- Comparator
- translucent testase4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Free radical accumulation and lipid peroxidation in testas of rapidly aged soybean seeds: a light-promoted process”
e4“Exposure to light greatly enhanced lipid peroxidation and increased organic free radical accumulation in the translucent testas of seeds, but not in the cotyledons”
Claim · model-written summary
Detached soybean testas showed responses to light similar to those of testas on seeds.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- testas detached from seedse5
- Outcome
- responses to lighte5
- Qualifier
- Similare5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Free radical accumulation and lipid peroxidation in testas of rapidly aged soybean seeds: a light-promoted process”
e5“Similar responses to light were recorded in testas detached from seeds”
Claim · model-written summary
The soybean testa is a significant locus of free radical degenerative events induced by high temperature combined with low moisture.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- testae6
- Treatment
- high temperature combined with low moisturee6
- Outcome
- free radical degenerative eventse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Free radical accumulation and lipid peroxidation in testas of rapidly aged soybean seeds: a light-promoted process”
e6“the testa is a significant locus of free radical degenerative events induced by high temperature combined with low moisture”
The same questions in other papers
light · physiology: oxidative · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
light · molecular: metabolites · Glycine max (soybean)Positive and negative results
20 papers in the same direction as this paper · 27 in the opposite direction
- positive
- positive
- positive
44 papers more in this group
See all 48 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.