Abstract
Abstract Using IAA C14 , polar transport has been studied in Helianthus annuus shoots in which stem elongation was inhibited by a transverse gravity stimulus induced by horizontal orientation of the plant with daily rotation. Marked inhibition of polar transport of IAA C14 occurred in the treated plants. A similar degree of inhibition occurred in the upper and lower halves of non‐rotated horizontally trained shoots. Horizontal orientation of stem segments during the transport test had no consistent effect upon IAA transport. Pretreatment of erect plants with gibberellin greatly enhanced IAA C14 transport and also reduced the inhibitory effect of horizontal orientation. Pretreatment of erect plants with non‐radioactive IAA or ethylene inhibited transport of IAA C14 and induced the same symptoms in the shoot as the transverse gravity stimulus. The similarities between the response of the auxin transport system to gravity stimulation, IAA and ethylene are discussed.
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Claims 9
Claim · model-written summary
Transverse gravity stimulation inhibited IAA C14 polar transport in Helianthus annuus shoots.
- Taxon
- Helianthus annuus
Helianthus annuust0 - Treatment
- transverse gravity stimuluse1
- Outcome
- polar transport of IAA C14e0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Marked inhibition of polar transport of IAA C14 occurred in the treated plants.”
t0“Helianthus annuus”
e1“Pretreatment of erect plants with non‐radioactive IAA or ethylene inhibited transport of IAA C14 and induced the same symptoms in the shoot as the transverse gravity stimulus.”
Claim · model-written summary
Both halves of horizontally trained shoots had similar transport inhibition.
- Taxon
- Helianthus annuusHelianthus annuust0
- Organ / stage
- upper and lower halvese0
- Treatment
- horizontally trainede0
- Outcome
- inhibitione0
- Direction
- similar degreee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A similar degree of inhibition occurred in the upper and lower halves of non‐rotated horizontally trained shoots.”
t0“Helianthus annuus”
Claim · model-written summary
Horizontal orientation of stem segments during testing had no consistent effect on IAA transport.
- Taxon
- Helianthus annuusHelianthus annuust0
- Organ / stage
- stem segmentse0
- Treatment
- Horizontal orientatione0
- Outcome
- IAA transporte0
- Direction
- no consistent effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Horizontal orientation of stem segments during the transport test had no consistent effect upon IAA transport.”
t0“Helianthus annuus”
Claim · model-written summary
Gibberellin pretreatment greatly enhanced IAA C14 transport.
- Taxon
- Helianthus annuusHelianthus annuust0
- Treatment
- gibberelline0
- Outcome
- IAA C14 transporte0
- Direction
- greatly enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment of erect plants with gibberellin greatly enhanced IAA C14 transport and also reduced the inhibitory effect of horizontal orientation.”
t0“Helianthus annuus”
Claim · model-written summary
Gibberellin pretreatment reduced inhibition from horizontal orientation.
- Taxon
- Helianthus annuusHelianthus annuust0
- Treatment
- gibberelline0
- Outcome
- inhibitory effect of horizontal orientatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment of erect plants with gibberellin greatly enhanced IAA C14 transport and also reduced the inhibitory effect of horizontal orientation.”
t0“Helianthus annuus”
Claim · model-written summary
Nonradioactive IAA pretreatment inhibited IAA C14 transport.
- Taxon
- Helianthus annuusHelianthus annuust0
- Treatment
- non‐radioactive IAAe0
- Outcome
- transport of IAA C14e0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment of erect plants with non‐radioactive IAA or ethylene inhibited transport of IAA C14 and induced the same symptoms in the shoot as the transverse gravity stimulus.”
t0“Helianthus annuus”
Claim · model-written summary
Ethylene pretreatment inhibited IAA C14 transport.
- Taxon
- Helianthus annuusHelianthus annuust0
- Treatment
- ethylenee0
- Outcome
- transport of IAA C14e0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment of erect plants with non‐radioactive IAA or ethylene inhibited transport of IAA C14 and induced the same symptoms in the shoot as the transverse gravity stimulus.”
t0“Helianthus annuus”
Claim · model-written summary
Nonradioactive IAA pretreatment induced shoot symptoms like transverse gravity stimulation.
- Taxon
- Helianthus annuusHelianthus annuust0
- Treatment
- non‐radioactive IAAe0
- Outcome
- same symptoms in the shoote0
- Comparator
- transverse gravity stimuluse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment of erect plants with non‐radioactive IAA or ethylene inhibited transport of IAA C14 and induced the same symptoms in the shoot as the transverse gravity stimulus.”
t0“Helianthus annuus”
Claim · model-written summary
Ethylene pretreatment induced shoot symptoms like transverse gravity stimulation.
- Taxon
- Helianthus annuusHelianthus annuust0
- Treatment
- ethylenee0
- Outcome
- same symptoms in the shoote0
- Comparator
- transverse gravity stimuluse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment of erect plants with non‐radioactive IAA or ethylene inhibited transport of IAA C14 and induced the same symptoms in the shoot as the transverse gravity stimulus.”
t0“Helianthus annuus”
The same questions in other papers
indole-3-acetic acid · molecular: metabolites · Helianthus annuus (common sunflower)Positive and negative results
2 in the opposite direction
- positive
- positive
ethene · molecular: metabolites · Helianthus annuus (common sunflower)Results agree
1 paper in the same direction as this paper
- negative
class · molecular: metabolites · Helianthus annuus (common sunflower)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 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.