Abstract
The effects of indole-3-acetic acid (IAA) and p-chlorophenoxyisobutyric acid (PCIB) on rates of abscission layer formation and abscission were investigated. The primary leaves of Phaseolus vulgaris were used as test material. Treatment at the distal end of one petiole of the pair from debladed primary leaves with 1% IAA inhibited the abscission of that petiole and accelerated the abscission of its opposite untreated partner. PCIB applied simultaneously with IAA counteracted the accelerating effect of IAA on the opposite untreated petiole. This influence increased with increasing concentrations of PCIB. Anatomical studies revealed that PCIB, although it counteracted the effect of IAA on the rate of abscission, had no effect on abscission layer formation. In other words abscission layer formation takes place under the influence of the auxin despite the presence of the antiauxin. The centripetal sequence of abscission layer formation was found in all cases.
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Claims 7
Claim · model-written summary
One percent IAA at one distal petiole inhibited abscission of that petiole.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarist0 - Organ / stage
- petiolee0
- Treatment
- 1% IAAe0
- Outcome
- abscission of that petiolee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment at the distal end of one petiole of the pair from debladed primary leaves with 1% IAA inhibited the abscission of that petiole”
t0“Phaseolus vulgaris”
Claim · model-written summary
The same IAA treatment accelerated abscission of the opposite untreated petiole.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Organ / stage
- petiolee0
- Treatment
- 1% IAAe0
- Outcome
- abscissione0
- Direction
- acceleratede0
- Comparator
- opposite untreated partnere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment at the distal end of one petiole of the pair from debladed primary leaves with 1% IAA inhibited the abscission of that petiole and accelerated the abscission of its opposite untreated partner.”
t0“Phaseolus vulgaris”
Claim · model-written summary
Simultaneous PCIB counteracted the IAA-associated acceleration of opposite petiole abscission.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Organ / stage
- opposite untreated petiolee0
- Treatment
- PCIB applied simultaneously with IAAe0
- Outcome
- accelerating effect of IAAe0
- Direction
- counteractede0
- Comparator
- IAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PCIB applied simultaneously with IAA counteracted the accelerating effect of IAA on the opposite untreated petiole.”
t0“Phaseolus vulgaris”
Claim · model-written summary
Increasing PCIB concentration increased its counteraction of IAA.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- increasing concentrations of PCIBe0
- Outcome
- This influencee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This influence increased with increasing concentrations of PCIB.”
t0“Phaseolus vulgaris”
Claim · model-written summary
PCIB had no effect on abscission layer formation.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- PCIBe0
- Outcome
- abscission layer formatione0
- Direction
- had no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PCIB, although it counteracted the effect of IAA on the rate of abscission, had no effect on abscission layer formation.”
t0“Phaseolus vulgaris”
Claim · model-written summary
Abscission layer formation proceeded under auxin despite antiauxin.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- auxine0
- Outcome
- abscission layer formation takes placee0
- Qualifier
- despite the presence of the antiauxine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“abscission layer formation takes place under the influence of the auxin despite the presence of the antiauxin.”
t0“Phaseolus vulgaris”
Claim · model-written summary
Abscission layers formed in a centripetal sequence in all cases.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Outcome
- centripetal sequence of abscission layer formatione0
- Qualifier
- in all casese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The centripetal sequence of abscission layer formation was found in all cases.”
t0“Phaseolus vulgaris”
The same questions in other papers
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1 paper in the same direction as this paper
- no effect
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.