Abstract
The release of potassium, magnesium, and phosphate ions from aleurone cells of barley (Hordeum vulgare L. cv. Himalaya) is a gibberellic acid-dependent process. The release of these ions is preceded by a lag period of 6 to 8 hours after gibberellic acid addition. The effect of gibberellic acid on the release of ions is not mediated through an effect on ion solubilization. Thus, gibberellic acid does not apreciably affect the sum of extracted and released ions relative to controls. Rather, the effect of the hormone is on the release process itself. Inhibitors of oxidative phosphorylation when added with gibberellic acid or at times up to 6 hours after gibberellic acid inhibition release. When these inhibitors are added after ion release has begun, however, rapid efflux of ions occurs. These results suggest a strong correlation between energy levels and ion transport capacity. Inhibitors of RNA and protein synthesis also inhibit gibberellic acid-stimulated ion release. Evidence suggests that RNA and protein synthesis are required to establish and maintain ion release capacity of aleurone cells.
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Claims 7
Claim · model-written summary
Gibberellic acid stimulated release of potassium, magnesium and phosphate ions.
- Taxon
- barley
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Hordeum vulgaree0 - Organ / stage
- aleurone cellse0
- Treatment
- gibberellic acide0
- Outcome
- release of potassium, magnesium, and phosphate ionse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The release of potassium, magnesium, and phosphate ions from aleurone cells of barley (Hordeum vulgare L. cv. Himalaya) is a gibberellic acid-dependent process”
Claim · model-written summary
Ion release followed a 6 to 8 hour lag after hormone addition.
- Taxon
- barleyHordeum vulgaree1
- Organ / stage
- aleurone cellse1
- Treatment
- gibberellic acid additione0
- Outcome
- lag period of 6 to 8 hourse0
- Value
- 6 to 8 hourse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The release of these ions is preceded by a lag period of 6 to 8 hours after gibberellic acid addition”
e1“aleurone cells of barley”
Claim · model-written summary
Gibberellic acid did not appreciably change total extracted and released ions.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- gibberellic acide0
- Outcome
- sum of extracted and released ionse0
- Direction
- does not apreciably affecte0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gibberellic acid does not apreciably affect the sum of extracted and released ions relative to controls”
e1“aleurone cells of barley”
Claim · model-written summary
Oxidative phosphorylation inhibitors blocked ion release when applied through six hours after gibberellic acid.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- Inhibitors of oxidative phosphorylatione0
- Outcome
- releasee0
- Direction
- inhibitione0
- Qualifier
- up to 6 hourse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inhibitors of oxidative phosphorylation when added with gibberellic acid or at times up to 6 hours after gibberellic acid inhibition release”
e1“aleurone cells of barley”
Claim · model-written summary
Adding oxidative phosphorylation inhibitors after release began caused rapid ion efflux.
- Taxon
- barleyHordeum vulgaree2
- Treatment
- Inhibitors of oxidative phosphorylatione1
- Outcome
- rapid efflux of ionse0
- Direction
- rapide0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When these inhibitors are added after ion release has begun, however, rapid efflux of ions occurs”
e1“Inhibitors of oxidative phosphorylation”
e2“aleurone cells of barley”
Claim · model-written summary
RNA and protein synthesis inhibitors inhibited hormone-stimulated ion release.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- Inhibitors of RNA and protein synthesise0
- Outcome
- gibberellic acid-stimulated ion releasee0
- Direction
- inhibite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inhibitors of RNA and protein synthesis also inhibit gibberellic acid-stimulated ion release”
e1“aleurone cells of barley”
Claim · model-written summary
RNA and protein synthesis were inferred necessary to establish and maintain aleurone ion release capacity.
- Taxon
- barleyHordeum vulgaree1
- Outcome
- ion release capacity of aleurone cellse0
- Qualifier
- RNA and protein synthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Evidence suggests that RNA and protein synthesis are required to establish and maintain ion release capacity of aleurone cells”
e1“aleurone cells of barley”
The same questions in other papers
Gibberellic acid · molecular: metabolites · Hordeum vulgare (barley)Results differ
9 papers in the same direction as this paper · 5 in the opposite direction
- positive
- no effect
- no effect
11 papers more in this group
See all 15 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.