Paper · 1967 · PLANT PHYSIOLOGY

Gibberellin-Auxin Interaction in Pea Stem Elongation

Ralph Ockerse; Arthur W. Galston

10
claims
16
verbatim quotes
48
citations
2
research areas
✓
Open access

Abstract

Joint application of gibberellic acid and indole-3-acetic acid to excised stem sections, terminal cuttings, and decapitated plants of a green dwarf pea results in a markedly synergistic growth response to these hormones. Synergism in green tall pea stem sections is comparatively small, although growth is kinetically indistinguishable from similarly treated dwarf sections.Gibberellin-induced growth does not appear to be mediated through its effect on auxin synthesis, since gibberellin pretreatment of dwarf cuttings fails to elicit an enhanced tryptophan-induced growth response of sections, whereas auxin-induced growth is strongly enhanced. Also, tryptophan-gibberellin synergism is not significant in sections and cuttings of green dwarf peas, while auxin-gibberellin synergism is.Administration of gibberellic acid prior to indole-3-acetic acid results in greatly increased growth. In reversed order, the application fails to produce any synergistic interaction. This indicates that gibberellin action must precede auxin action in growth regulation.

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Claims 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Joint gibberellic acid and indole-3-acetic acid application synergistically increased green dwarf pea growth.

Material
green dwarf peae0
Organ / stage
stem sections, terminal cuttings, and decapitated plantse0
Treatment
Joint application of gibberellic acid and indole-3-acetic acide0
Outcome
growth responsee0
Direction
synergistice0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Joint application of gibberellic acid and indole-3-acetic acid to excised stem sections, terminal cuttings, and decapitated plants of a green dwarf pea results in a markedly synergistic growth response to these hormones”

✓ located verbatim in the source · abstract, characters 0–219 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Synergism in green tall pea stem sections was comparatively small.

Material
green tall peae0
Organ / stage
stem sectionse0
Outcome
Synergisme0
Direction
comparatively smalle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Synergism in green tall pea stem sections is comparatively small”

✓ located verbatim in the source · abstract, characters 221–285 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Growth kinetics in treated tall and dwarf pea sections were indistinguishable.

Outcome
growthe0
Direction
indistinguishablee0
Comparator
similarly treated dwarf sectionse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e0

“growth is kinetically indistinguishable from similarly treated dwarf sections”

✓ located verbatim in the source · abstract, characters 296–373 · show in text ↑
t0

“Pea”

✓ located verbatim in the source · title, characters 33–36 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Gibberellin pretreatment did not enhance tryptophan-induced growth in dwarf pea cuttings.

Material
dwarf cuttingse0
Treatment
gibberellin pretreatmente0
Outcome
tryptophan-induced growth responsee0
Direction
fails to elicit an enhancede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Pea”

✓ located verbatim in the source · title, characters 33–36 · show in text ↑
e0

“gibberellin pretreatment of dwarf cuttings fails to elicit an enhanced tryptophan-induced growth response of sections”

✓ located verbatim in the source · abstract, characters 477–594 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Gibberellin strongly enhanced auxin-induced growth.

Outcome
auxin-induced growthe0
Direction
strongly enhancede0

Not reportedTreatmentComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Pea”

✓ located verbatim in the source · title, characters 33–36 · show in text ↑
e0

“whereas auxin-induced growth is strongly enhanced”

✓ located verbatim in the source · abstract, characters 596–645 · show in text ↑
Observationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Tryptophan-gibberellin synergism was not significant in green dwarf pea sections and cuttings.

Taxon
green dwarf pease0
Organ / stage
sections and cuttingse0
Outcome
tryptophan-gibberellin synergisme0

Not reportedDirection

Verbatim

e0

“tryptophan-gibberellin synergism is not significant in sections and cuttings of green dwarf peas”

✓ located verbatim in the source · abstract, characters 653–749 · show in text ↑
Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Auxin-gibberellin synergism was significant in green dwarf pea sections and cuttings.

Taxon
green dwarf pease0
Organ / stage
sections and cuttingse0
Outcome
auxin-gibberellin synergisme0

Not reportedDirection

Verbatim

e0

“tryptophan-gibberellin synergism is not significant in sections and cuttings of green dwarf peas, while auxin-gibberellin synergism is”

✓ located verbatim in the source · abstract, characters 653–787 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Gibberellic acid administered before indole-3-acetic acid greatly increased growth.

Treatment
gibberellic acid prior to indole-3-acetic acide0
Outcome
growthe0
Direction
greatly increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Pea”

✓ located verbatim in the source · title, characters 33–36 · show in text ↑
e0

“Administration of gibberellic acid prior to indole-3-acetic acid results in greatly increased growth”

✓ located verbatim in the source · abstract, characters 788–888 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Reversing hormone application order failed to produce synergism.

Treatment
In reversed ordere0
Outcome
synergistic interactione0
Direction
fails to producee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Pea”

✓ located verbatim in the source · title, characters 33–36 · show in text ↑
e0

“In reversed order, the application fails to produce any synergistic interaction”

✓ located verbatim in the source · abstract, characters 890–969 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The authors infer that gibberellin action must precede auxin action in growth regulation.

Outcome
growth regulatione0
Qualifier
gibberellin action must precede auxin actione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Pea”

✓ located verbatim in the source · title, characters 33–36 · show in text ↑
e0

“gibberellin action must precede auxin action in growth regulation”

✓ located verbatim in the source · abstract, characters 991–1056 · show in text ↑

Gibberellic acid · growth · Lathyrus oleraceus (pea)Results differ

41 papers: 34 positive, 7 negative or no effect

33 papers in the same direction as this paper · 7 in the opposite direction

  1. positive
  2. negative
  3. no effect

37 papers more in this group

See all 41 papers →

indole-3-acetic acid · growth · Lathyrus oleraceus (pea)Results differ

47 papers: 33 positive, 14 negative or no effect

32 papers in the same direction as this paper · 14 in the opposite direction

  1. negative
  2. positive
  3. positive

43 papers more in this group

See all 47 papers →

class · growth · Lathyrus oleraceus (pea)Positive and negative results

37 papers: 22 positive, 15 negative or no effect

14 papers in the same direction as this paper · 22 in the opposite direction

  1. positive
  2. positive
    Elongation then reached about four times its pre-auxin rate.

    Timing of the Auxin Response in Etiolated Pea Stem Sections · 1970 · compared with rate of elongation before auxin treatment

    Opposite directionCites this paper

  3. positive

33 papers more in this group

See all 37 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.