Abstract
Summary. The growth-inhibitory properties of synthetic dLdormin (Abseisin I1) and its trans, trans isomer were assayed using the oat mesoeotyl section. Growth of this tissue was promoted by IAA and GA; dormin inhibited the elongation caused by both compounds and also the small amount of growth that occurred in blank buffer. A given concentration of dormin inhibited growth to about the same proportion in all these cases. IAA and GA mixtures stimulated growth in the presence of 2.0 rag/1 dormin slightly more than the sum of growth with IAA + 2.0 mg/l and GA+2.0mg/1 dormin. At lower concentrations of dormin (0.02rag/1 and below) the relationship was reversed. Dormin inhibited growth slightly at 0.02 rag/1 but below that concentration it had no observable effect. Kinetin did not affect mesoeotyl elongation, nor did it interact with the inhibition of IAA- or GA-stimulated growth. The trans, trans isomer had 1/30th the activity of the natural 2-cis-4.trans compount; when they were assayed toge+A~er in mixtures of different proportions the inhibitions were additive. l~Iost experiments were carried out with GA a but dormin also inMbited the action of gibberellins 1, 4, 5, 6, 7 and 9. The action of dormin was net competitive with that of IAA or GA. The effect of dormin as an inhibitor of plant growth is discussed.
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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 14
Claim · model-written summary
IAA and GA promoted growth of oat mesocotyl sections.
- Taxon
- oat
Avena sativat0 - Treatment
- IAA and GAe1
- Outcome
- Growthe1
- Direction
- promotede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e1“Growth of this tissue was promoted by IAA and GA; dormin inhibited the elongation caused by both compounds and also the small amount of growth that occurred in blank buffer”
Claim · model-written summary
Dormin inhibited the elongation of oat mesocotyl sections caused by IAA and GA.
- Taxon
- oatAvena sativat0
- Treatment
- dormine1
- Outcome
- elongatione1
- Direction
- inhibitede1
- Comparator
- IAA and GAe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e1“Growth of this tissue was promoted by IAA and GA; dormin inhibited the elongation caused by both compounds and also the small amount of growth that occurred in blank buffer”
Claim · model-written summary
Dormin inhibited the small growth of oat mesocotyl sections in blank buffer.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e1“Growth of this tissue was promoted by IAA and GA; dormin inhibited the elongation caused by both compounds and also the small amount of growth that occurred in blank buffer”
Claim · model-written summary
A given concentration of dormin inhibited growth to about the same proportion in all cases tested.
- Taxon
- oatAvena sativat0
- Treatment
- A given concentration of dormine2
- Outcome
- growthe2
- Direction
- inhibitede2
- Comparator
- all these casese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e2“A given concentration of dormin inhibited growth to about the same proportion in all these cases”
Claim · model-written summary
IAA and GA mixtures stimulated growth in the presence of dormin slightly more than the sum of growth with IAA and GA separately.
- Taxon
- oatAvena sativat0
- Treatment
- IAA and GA mixturese3
- Outcome
- growthe3
- Direction
- stimulatede3
- Comparator
- the sum of growth with IAAe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e3“IAA and GA mixtures stimulated growth in the presence of 2.0 rag/1 dormin slightly more than the sum of growth with IAA + 2.0 mg/l and GA+2.0mg/1 dormin”
Claim · model-written summary
At lower concentrations of dormin, the relationship between the mixture and the sum of growth was reversed.
- Taxon
- oatAvena sativat0
- Treatment
- lower concentrations of dormine4
- Outcome
- the relationshipe4
- Direction
- reversede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e4“At lower concentrations of dormin (0.02rag/1 and below) the relationship was reversed”
Claim · model-written summary
Dormin inhibited growth slightly at 0.02 mg/l.
- Taxon
- oatAvena sativat0
- Treatment
- Dormine5
- Outcome
- growthe5
- Direction
- inhibitede5
- Value
- 0.02 rag/1e5
- Comparator
- below that concentratione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e5“Dormin inhibited growth slightly at 0.02 rag/1 but below that concentration it had no observable effect”
Claim · model-written summary
Dormin had no observable effect on growth below 0.02 mg/l.
- Taxon
- oatAvena sativat0
- Treatment
- Dormine5
- Outcome
- growthe5
- Direction
- no observable effecte5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e5“Dormin inhibited growth slightly at 0.02 rag/1 but below that concentration it had no observable effect”
Claim · model-written summary
Kinetin did not affect mesocotyl elongation.
- Taxon
- oatAvena sativat0
- Treatment
- Kinetine6
- Outcome
- mesoeotyl elongatione6
- Direction
- did not affecte6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e6“Kinetin did not affect mesoeotyl elongation, nor did it interact with the inhibition of IAA- or GA-stimulated growth”
Claim · model-written summary
Kinetin did not interact with the inhibition of IAA- or GA-stimulated growth.
- Taxon
- oatAvena sativat0
- Treatment
- Kinetine6
- Outcome
- inhibition of IAA- or GA-stimulated growthe6
- Direction
- nor did it interacte6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e6“Kinetin did not affect mesoeotyl elongation, nor did it interact with the inhibition of IAA- or GA-stimulated growth”
Claim · model-written summary
The trans, trans isomer of dormin had about 1/30th the activity of the natural 2-cis-4.trans compound.
- Taxon
- oatAvena sativat0
- Treatment
- trans, trans isomere7
- Outcome
- activitye7
- Direction
- lowerinferrede7
- Value
- 1/30the7
- Comparator
- natural 2-cis-4.trans compounte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e7“The trans, trans isomer had 1/30th the activity of the natural 2-cis-4.trans compount”
Claim · model-written summary
Dormin inhibitions were additive in mixtures of different proportions of the two forms.
- Taxon
- oatAvena sativat0
- Treatment
- mixtures of different proportionse1
- Outcome
- inhibitionse1
- Direction
- additivee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e1“in mixtures of different proportions the inhibitions were additive”
Claim · model-written summary
Dormin decreased the action of gibberellins 1, 4, 5, 6, 7 and 9.
- Taxon
- oatAvena sativat0
- Treatment
- dormine1
- Compound
- gibberellins 1, 4, 5, 6, 7 and 9e1
- Outcome
- the action of gibberellinse1
- Direction
- decreaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OAT MESOCOTYL”
e1“dormin also inMbited the action of gibberellins 1, 4, 5, 6, 7 and 9”
Claim · model-written summary
The action of dormin was not competitive with that of IAA or GA.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Schema note from the model: The quote reads "net competitive"; it is taken as "not competitive" (likely OCR error for "not").
Verbatim
t0“OAT MESOCOTYL”
e1“The action of dormin was net competitive with that of IAA or GA”
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See all 18 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.