Abstract
At appropriate concentrations both gibberellic acid (GA) and 1-naphthalene-acetic acid (NAA) enhance the main axis growth of excised tomato roots grown in culture media containing sucrose at concentrations below 1 per cent. Lateral root extension growth is enhanced by GA at all sucrose concentrations tested; only at the lower sucrose concentrations is this effect observed with NAA. Both GA and NAA increase the number of emergent lateral roots and this effect is most marked in media of low sucrose content. Both GA and NAA at higher concentrations inhibit root growth but NAA exhibits its full range of growth effects over a much narrower concentration range than GA. GA, like NAA, speeds up the loss of meristematic activity which occurs when individual meristems are repeatedly subcultured in media containing 1 per cent, or higher concentrations of sucrose. The promotion of main axis growth by both GA and NAA involves enhanced cell elongation and cell division. At a moderately inhibitory concentration GA reduces both cell elongation and cell division; this is not the case with NAA. Gibberellins A1, A2, and A4 resemble GA (gibberellin A3) in their growth effects. Allogibberic acid like G A promotes lateral root extension growth but causes marked inhibition of root growth at a much lower concentration than GA.
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Claims 18
Claim · model-written summary
GA enhanced main axis growth at low sucrose.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- gibberellic acid (GA)e0
- Outcome
- main axis growthe0
- Direction
- enhancee0
- Qualifier
- sucrose at concentrations below 1 per cente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gibberellic acid (GA) and 1-naphthalene-acetic acid (NAA) enhance the main axis growth of excised tomato roots grown in culture media containing sucrose at concentrations below 1 per cent”
Claim · model-written summary
NAA enhanced main axis growth at low sucrose.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- 1-naphthalene-acetic acid (NAA)e0
- Outcome
- main axis growthe0
- Direction
- enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gibberellic acid (GA) and 1-naphthalene-acetic acid (NAA) enhance the main axis growth of excised tomato roots grown in culture media containing sucrose at concentrations below 1 per cent”
Claim · model-written summary
GA enhanced lateral root extension at all tested sucrose concentrations.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- GAe0
- Outcome
- Lateral root extension growthe0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lateral root extension growth is enhanced by GA at all sucrose concentrations tested”
t0“Tomato Roots”
Claim · model-written summary
NAA enhanced lateral root extension only at lower sucrose concentrations.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- NAAe0
- Outcome
- this effecte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only at the lower sucrose concentrations is this effect observed with NAA”
t0“Tomato Roots”
Claim · model-written summary
GA increased emergent lateral root number, particularly at low sucrose.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- GAe0
- Outcome
- number of emergent lateral rootse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both GA and NAA increase the number of emergent lateral roots and this effect is most marked in media of low sucrose content”
t0“Tomato Roots”
Claim · model-written summary
NAA increased emergent lateral root number, particularly at low sucrose.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- NAAe0
- Outcome
- number of emergent lateral rootse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both GA and NAA increase the number of emergent lateral roots and this effect is most marked in media of low sucrose content”
t0“Tomato Roots”
Claim · model-written summary
Higher GA concentrations inhibited root growth.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- GAe0
- Outcome
- root growthe0
- Direction
- inhibite0
- Qualifier
- higher concentrationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both GA and NAA at higher concentrations inhibit root growth”
t0“Tomato Roots”
Claim · model-written summary
Higher NAA concentrations inhibited root growth.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- NAA at higher concentrationse0
- Outcome
- root growthe0
- Direction
- inhibite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both GA and NAA at higher concentrations inhibit root growth”
t0“Tomato Roots”
Claim · model-written summary
NAA growth responses spanned a narrower concentration range than GA.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- full range of growth effectse0
- Direction
- narrowere0
- Comparator
- GAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NAA exhibits its full range of growth effects over a much narrower concentration range than GA”
t0“Tomato Roots”
Claim · model-written summary
GA accelerated loss of meristematic activity during repeated subculture.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- GAe0
- Outcome
- loss of meristematic activitye0
- Direction
- speeds upe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA, like NAA, speeds up the loss of meristematic activity which occurs when individual meristems are repeatedly subcultured in media containing 1 per cent, or higher concentrations of sucrose”
t0“Tomato Roots”
Claim · model-written summary
NAA accelerated loss of meristematic activity during repeated subculture.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- NAAe0
- Outcome
- loss of meristematic activitye0
- Direction
- speeds upe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA, like NAA, speeds up the loss of meristematic activity which occurs when individual meristems are repeatedly subcultured in media containing 1 per cent, or higher concentrations of sucrose”
t0“Tomato Roots”
Claim · model-written summary
GA promotion of main axis growth involved enhanced cell elongation and division.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- GAe0
- Outcome
- main axis growthe0
- Qualifier
- enhanced cell elongation and cell divisione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The promotion of main axis growth by both GA and NAA involves enhanced cell elongation and cell division”
t0“Tomato Roots”
Claim · model-written summary
NAA promotion of main axis growth involved enhanced cell elongation and division.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- NAAe0
- Outcome
- main axis growthe0
- Qualifier
- enhanced cell elongation and cell divisione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The promotion of main axis growth by both GA and NAA involves enhanced cell elongation and cell division”
t0“Tomato Roots”
Claim · model-written summary
Moderately inhibitory GA reduced cell elongation and division.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- GAe0
- Outcome
- cell elongation and cell divisione0
- Direction
- reducese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At a moderately inhibitory concentration GA reduces both cell elongation and cell division”
t0“Tomato Roots”
Claim · model-written summary
NAA did not share the cell elongation and division reduction at a moderately inhibitory concentration.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- this is not the case with NAAe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this is not the case with NAA”
t0“Tomato Roots”
Claim · model-written summary
Gibberellins A1, A2, and A4 resembled GA in growth effects.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- growth effectse0
- Comparator
- GA (gibberellin A3)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gibberellins A1, A2, and A4 resemble GA (gibberellin A3) in their growth effects”
t0“Tomato Roots”
Claim · model-written summary
Allogibberic acid promoted lateral root extension.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Allogibberic acide0
- Outcome
- lateral root extension growthe0
- Direction
- promotese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Allogibberic acid like G A promotes lateral root extension growth”
t0“Tomato Roots”
Claim · model-written summary
Allogibberic acid inhibited root growth at a lower concentration than GA.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Allogibberic acide0
- Outcome
- root growthe0
- Direction
- inhibitione0
- Comparator
- GAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Allogibberic acid like G A promotes lateral root extension growth but causes marked inhibition of root growth at a much lower concentration than GA”
t0“Tomato Roots”
The same questions in other papers
1-naphthaleneacetic acid · growth · Solanum lycopersicum (tomato)Results differ
31 papers in the same direction as this paper · 7 in the opposite direction
- negative
- negative
- no effect
35 papers more in this group
See all 39 papers →Gibberellic acid · growth · Solanum lycopersicum (tomato)Results differ
79 papers in the same direction as this paper · 7 in the opposite direction
- negative
- no effect
- negative
83 papers more in this group
See all 87 papers →Gibberellic acid · cytology · Solanum lycopersicum (tomato)Positive and negative results
2 in the opposite direction
- positive
- 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.