Abstract
Gibberellic acid induces (a) increased elongation of Avena sativa stem segments, (b) increased formation of cell wall material, measured on the basis of dry weight, and (c) increased incorporation of (14)C-glucose into all fractions of the cell wall material. This increased incorporation of radioactivity correlates well with increased formation of cell wall material and shows a time-course pattern similar to the time course of the elongation response. Approximately one hour after the application of gibberellic acid, the rates both of growth and of incorporation of radioactivity accelerate to about 2-fold over the control rate. Gibberellic acid does not stimulate the incorporation of labeled glucose into the cell wall material simply by increasing the rate of uptake of glucose by internodal cells. The stimulation of the incorporation of (14)C-glucose into cell wall material, which reflects the stimulation of cell wall synthesis, seems to be an important and relatively early effect of gibberellic acid in this system and probably contributes significantly to the elongation response elicited by the hormone.
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Claims 9
Claim · model-written summary
Gibberellic acid increased elongation of Avena sativa stem segments.
- Taxon
- Avena sativa
Avena sativae0 - Organ / stage
- stem segmentse0
- Treatment
- Gibberellic acide0
- Outcome
- elongatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gibberellic acid induces (a) increased elongation of Avena sativa stem segments”
Claim · model-written summary
Gibberellic acid increased dry weight formation of cell wall material.
- Taxon
- Avena sativaAvena sativae0
- Treatment
- Gibberellic acide0
- Outcome
- formation of cell wall materiale0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gibberellic acid induces (a) increased elongation of Avena sativa stem segments, (b) increased formation of cell wall material, measured on the basis of dry weight”
Claim · model-written summary
Gibberellic acid increased labeled glucose incorporation into every wall fraction.
- Taxon
- Avena sativaAvena sativae0
- Treatment
- Gibberellic acide0
- Outcome
- incorporation of (14)C-glucose into all fractions of the cell wall materiale0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gibberellic acid induces (a) increased elongation of Avena sativa stem segments, (b) increased formation of cell wall material, measured on the basis of dry weight, and (c) increased incorporation of (14)C-glucose into all fractions of the cell wall material”
Claim · model-written summary
Increased radioactivity incorporation correlated with increased wall material formation.
- Outcome
- incorporation of radioactivitye0
- Direction
- increasede0
- Comparator
- formation of cell wall materiale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This increased incorporation of radioactivity correlates well with increased formation of cell wall material”
t0“Avena”
Claim · model-written summary
Radioactivity incorporation had a time course similar to elongation.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shows a time-course pattern similar to the time course of the elongation response”
t0“Avena”
Claim · model-written summary
About one hour after gibberellic acid application, growth rate accelerated to about twice the control rate.
- Treatment
- gibberellic acide0
- Outcome
- growthe0
- Direction
- acceleratee0
- Value
- 2-folde0
- Qualifier
- Approximately one houre0
- Comparator
- control ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Approximately one hour after the application of gibberellic acid, the rates both of growth and of incorporation of radioactivity accelerate to about 2-fold over the control rate”
t0“Avena”
Claim · model-written summary
About one hour after gibberellic acid application, radioactivity incorporation rate accelerated to about twice the control rate.
- Treatment
- gibberellic acide0
- Outcome
- incorporation of radioactivitye0
- Direction
- acceleratee0
- Value
- 2-folde0
- Qualifier
- Approximately one houre0
- Comparator
- control ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Approximately one hour after the application of gibberellic acid, the rates both of growth and of incorporation of radioactivity accelerate to about 2-fold over the control rate”
t0“Avena”
Claim · model-written summary
Gibberellic acid did not stimulate glucose uptake as an explanation for greater wall incorporation.
- Treatment
- Gibberellic acide0
- Outcome
- rate of uptake of glucose by internodal cellse0
- Direction
- does not stimulatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gibberellic acid does not stimulate the incorporation of labeled glucose into the cell wall material simply by increasing the rate of uptake of glucose by internodal cells”
t0“Avena”
Claim · model-written summary
The authors interpret stimulation of wall synthesis as an early effect contributing to stem elongation.
- Treatment
- gibberellic acide0
- Outcome
- elongation responsee0
- Qualifier
- stimulation of cell wall synthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The stimulation of the incorporation of (14)C-glucose into cell wall material, which reflects the stimulation of cell wall synthesis, seems to be an important and relatively early effect of gibberellic acid in this system and probably contributes significantly to the elongation response elicited by the hormone”
t0“Avena”
The same questions in other papers
Gibberellic acid · nutrient: content · AvenaPositive and negative results
1 in the opposite direction
- positive
Gibberellic acid · growth · Avena sativa (oats)Positive and negative results
16 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
14 papers more in this group
See all 18 papers →Gibberellic acid · cytology · Avena sativa (oats)Results agree
2 papers in the same direction as this paper
- positive
- positive
Gibberellic acid · growth · AvenaResults agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.