Abstract
The interaction of light, gibberellic acid (GA3), and phlorizin in the growth of lettuce (Lactuca sativa L. cv. ‘Grand Rapids’) hypocotyls was investigated. At all concentrations of GA3, phlorizin enhanced GA3-induced growth at luminous intensities above 50 ft-c (continuous light). Without GA3, phlorizin had no effect on hypocotyl growth in the light but it inhibited growth in the dark. Both seedlings and hypocotyl sections responded to phlorizin in the presence of GA3. There was no iteraction between phlorizin and KCl. Water-growth was severly inhibited by light. GA3,-induced growth was slightly inhibited by light, and then only at luminous intensities above 50 ft-c. Thus, relative to H2O-growth, GA3-induced growth increased with increasing luminous intensity up to 450 ft-c, where it reached saturation. It seems that a synergism may exist between light and GA3 as well as between phlorizin and GA3.
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 10
Claim · model-written summary
Phlorizin enhanced GA3-induced growth above 50 ft-c at all GA3 concentrations.
- Taxon
- Lettuce
Lactuca sativat0 - Treatment
- phlorizine0
- Outcome
- GA3-induced growthe0
- Direction
- enhancede0
- Qualifier
- at luminous intensities above 50 ft-c (continuous light)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At all concentrations of GA3, phlorizin enhanced GA3-induced growth at luminous intensities above 50 ft-c (continuous light).”
t0“Lettuce”
Claim · model-written summary
Without GA3, phlorizin had no effect on hypocotyl growth in light.
- Taxon
- LettuceLactuca sativat0
- Treatment
- phlorizine0
- Outcome
- hypocotyl growthe0
- Direction
- no effecte0
- Qualifier
- Without GA3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without GA3, phlorizin had no effect on hypocotyl growth in the light but it inhibited growth in the dark.”
t0“Lettuce”
Claim · model-written summary
Without GA3, phlorizin inhibited growth in darkness.
- Taxon
- LettuceLactuca sativat0
- Treatment
- phlorizine0
- Outcome
- growthe0
- Direction
- inhibitede0
- Qualifier
- in the darke0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without GA3, phlorizin had no effect on hypocotyl growth in the light but it inhibited growth in the dark.”
t0“Lettuce”
Claim · model-written summary
Seedlings and hypocotyl sections responded to phlorizin with GA3.
- Taxon
- LettuceLactuca sativat0
- Organ / stage
- seedlings and hypocotyl sectionse0
- Outcome
- responded to phlorizine0
- Qualifier
- in the presence of GA3e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both seedlings and hypocotyl sections responded to phlorizin in the presence of GA3.”
t0“Lettuce”
Claim · model-written summary
Phlorizin and KCl showed no interaction.
- Taxon
- LettuceLactuca sativat0
- Treatment
- phlorizin and KCle0
- Outcome
- iteraction between phlorizin and KCle0
- Direction
- no iteractione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no iteraction between phlorizin and KCl.”
t0“Lettuce”
Claim · model-written summary
Light severely inhibited water-growth.
- Taxon
- LettuceLactuca sativat0
- Treatment
- lighte0
- Outcome
- Water-growthe0
- Direction
- severly inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-growth was severly inhibited by light.”
t0“Lettuce”
Claim · model-written summary
Light slightly inhibited GA3-induced growth only above 50 ft-c.
- Taxon
- LettuceLactuca sativat0
- Treatment
- lighte0
- Outcome
- GA3,-induced growthe0
- Direction
- slightly inhibitede0
- Qualifier
- only at luminous intensities above 50 ft-ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA3,-induced growth was slightly inhibited by light, and then only at luminous intensities above 50 ft-c.”
t0“Lettuce”
Claim · model-written summary
Relative to water growth, GA3-induced growth increased as light intensity rose to 450 ft-c and saturated there.
- Taxon
- LettuceLactuca sativat0
- Treatment
- increasing luminous intensitye0
- Outcome
- GA3-induced growthe0
- Direction
- increasede0
- Value
- 450 ft-ce0
- Comparator
- H2O-growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relative to H2O-growth, GA3-induced growth increased with increasing luminous intensity up to 450 ft-c, where it reached saturation.”
t0“Lettuce”
Claim · model-written summary
The authors suggest possible synergy between light and GA3.
- Taxon
- LettuceLactuca sativat0
- Treatment
- light and GA3e0
- Outcome
- synergism may exist between light and GA3e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It seems that a synergism may exist between light and GA3 as well as between phlorizin and GA3.”
t0“Lettuce”
Claim · model-written summary
The authors suggest possible synergy between phlorizin and GA3.
- Taxon
- LettuceLactuca sativat0
- Treatment
- phlorizin and GA3e0
- Outcome
- synergism may exist between light and GA3 as well as between phlorizin and GA3e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It seems that a synergism may exist between light and GA3 as well as between phlorizin and GA3.”
t0“Lettuce”
The same questions in other papers
light · growth · Lactuca sativa (garden lettuce)Positive and negative results
56 papers in the same direction as this paper · 243 in the opposite direction
- negative
- positive
- positive
296 papers more in this group
See all 300 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.