Abstract
The growth of tobacco callus in culture (previously shown to contain gibberellin [GA]-like substances), and its ability to metabolize [(3)H]-GA(20) were examined. Growth rates, in the presence and absence of exogenously applied GA, were examined in light and dark conditions. Dark-grown callus grew at a much faster rate than light-grown and [(3)H]GA(20) was metabolized much more rapidly in darkness than in light.[(3)H]GA(1) was identified by combined gas-liquid chromatography/mass spectrometry as a major product of [(3)H]GA(20), and was found to be a more potent promoter of tobacco callus growth than GA(20).
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Claims 4
Claim · model-written summary
Dark-grown tobacco callus grew faster than light-grown callus.
- Taxon
- Tobacco
Nicotiana tabacumt0 - Organ / stage
- calluse0
- Treatment
- Dark-growne0
- Outcome
- callus grewe0
- Direction
- fastere0
- Comparator
- light-growne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dark-grown callus grew at a much faster rate than light-grown”
t0“Tobacco”
Claim · model-written summary
Radiolabeled GA20 was metabolized more rapidly in darkness than light.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- darknesse0
- Outcome
- [(3)H]GA(20) was metabolizede0
- Direction
- more rapidlye0
- Comparator
- lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“[(3)H]GA(20) was metabolized much more rapidly in darkness than in light”
t0“Tobacco”
Claim · model-written summary
Radiolabeled GA1 was identified as a major GA20 metabolite.
- Taxon
- TobaccoNicotiana tabacumt0
- Outcome
- [(3)H]GA(1)e0
- Qualifier
- major product of [(3)H]GA(20)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“[(3)H]GA(1) was identified by combined gas-liquid chromatography/mass spectrometry as a major product of [(3)H]GA(20)”
t0“Tobacco”
Claim · model-written summary
GA1 promoted tobacco callus growth more potently than GA20.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- GA(1)e1
- Outcome
- callus growthe0
- Direction
- more potente0
- Comparator
- GA(20)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was found to be a more potent promoter of tobacco callus growth than GA(20)”
e1“[(3)H]GA(1) was identified by combined gas-liquid chromatography/mass spectrometry as a major product of [(3)H]GA(20), and was found to be a more potent promoter of tobacco callus growth than GA(20)”
The same questions in other papers
Gibberellic acid · growth · Nicotiana tabacum (tobacco)Positive and negative results
21 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
20 papers more in this group
See all 24 papers →light · growth · Nicotiana tabacum (tobacco)Positive and negative results
28 papers in the same direction as this paper · 16 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- no effect
- negative
43 papers more in this group
See all 47 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.