Abstract
Longitudinal growth of etiolated pea stem segments has been shown to be strongly stimulated by indoleacetic acid. Lateral growth, on the other hand, was hardly stimulated either by high or low indoleacetic acid concentrations. Addition of sucrose to high indoleacetic acid concentrations (10 μg/cc enhanced lateral growth. Although the 80% ethanol soluble sugar content increased greatly during the growth period, it was only slightly affected by indoleacetic acid. Lateral growth is not, therefore, a result of an increased osmotic value of the cell sap, and the cells consequently do not swell. Not more than 5% of the water absorbed by stem segments during longitudinal and lateral growth is released when the segments are incubated in solutions of high osmotic value. It is concluded that lateral growth of etiolated pea stem segments in solutions of 10 μg/cc IAA and in the presence of sucrose requires, in the first instance, a weakening of the cell wall in a lateral direction and sucrose is somehow needed for this process.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Indoleacetic acid strongly stimulated longitudinal growth of etiolated pea stem segments.
- Taxon
- pea
Lathyrus oleraceuse0 - Organ / stage
- stem segmentse0
- Treatment
- indoleacetic acide0
- Outcome
- Longitudinal growthe0
- Direction
- strongly stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Longitudinal growth of etiolated pea stem segments has been shown to be strongly stimulated by indoleacetic acid.”
Claim · model-written summary
High and low indoleacetic acid concentrations hardly stimulated lateral growth.
- Taxon
- PEALathyrus oleraceust0
- Treatment
- high or low indoleacetic acid concentrationse0
- Outcome
- Lateral growthe0
- Direction
- hardly stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lateral growth, on the other hand, was hardly stimulated either by high or low indoleacetic acid concentrations.”
t0“PEA”
Claim · model-written summary
Sucrose added to high indoleacetic acid concentrations enhanced lateral growth.
- Taxon
- PEALathyrus oleraceust0
- Treatment
- Addition of sucrose to high indoleacetic acid concentrations (10 μg/cce0
- Outcome
- lateral growthe0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of sucrose to high indoleacetic acid concentrations (10 μg/cc enhanced lateral growth.”
t0“PEA”
Claim · model-written summary
Ethanol-soluble sugar content increased greatly during the growth period.
- Taxon
- PEALathyrus oleraceust0
- Outcome
- 80% ethanol soluble sugar contente0
- Direction
- increased greatlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 80% ethanol soluble sugar content increased greatly during the growth period”
t0“PEA”
Claim · model-written summary
Indoleacetic acid only slightly affected ethanol-soluble sugar content.
- Taxon
- PEALathyrus oleraceust0
- Treatment
- indoleacetic acide0
- Outcome
- 80% ethanol soluble sugar contente1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was only slightly affected by indoleacetic acid”
e1“the 80% ethanol soluble sugar content increased greatly during the growth period”
t0“PEA”
Claim · model-written summary
At most 5% of absorbed water was released in high-osmotic-value solutions.
- Taxon
- PEALathyrus oleraceust0
- Treatment
- solutions of high osmotic valuee0
- Outcome
- water absorbed by stem segments during longitudinal and lateral growth is releasede0
- Value
- 5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Not more than 5% of the water absorbed by stem segments during longitudinal and lateral growth is released when the segments are incubated in solutions of high osmotic value.”
t0“PEA”
Claim · model-written summary
Lateral growth was interpreted as requiring lateral cell-wall weakening with a role for sucrose.
- Taxon
- peaLathyrus oleraceuse0
- Outcome
- lateral growthe0
- Qualifier
- a weakening of the cell wall in a lateral directione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lateral growth of etiolated pea stem segments in solutions of 10 μg/cc IAA and in the presence of sucrose requires, in the first instance, a weakening of the cell wall in a lateral direction and sucrose is somehow needed for this process”
The same questions in other papers
indole-3-acetic acid · growth · Lathyrus oleraceus (pea)Results differ
32 papers in the same direction as this paper · 14 in the opposite direction
- positive
- no effect
- negative
43 papers more in this group
See all 47 papers →sucrose · growth · Lathyrus oleraceus (pea)Positive and negative results
7 papers in the same direction as this paper · 3 in the opposite direction
- positive
- no effect
- no effect
7 papers more in this group
See all 11 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.