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
IAA on one petiole inhibited its abscission.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarise1 - 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”
e1“The primary leaves of Phaseolus vulgaris were used as test material.”
Claim · model-written summary
IAA on one petiole accelerated abscission of its untreated partner.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- 1% IAAe0
- Outcome
- abscission of its opposite untreated partnere0
- 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”
e1“The primary leaves of Phaseolus vulgaris were used as test material.”
Claim · model-written summary
PCIB counteracted the IAA-induced acceleration of abscission in the untreated petiole.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- PCIB applied simultaneously with IAAe0
- Outcome
- accelerating effect of IAA on the opposite untreated petiolee0
- 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.”
e1“The primary leaves of Phaseolus vulgaris were used as test material.”
Claim · model-written summary
The counteraction increased with increasing PCIB concentration.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- 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.”
e1“The primary leaves of Phaseolus vulgaris were used as test material.”
Claim · model-written summary
PCIB had no effect on abscission layer formation despite counteracting IAA effects on abscission rate.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- 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.”
e1“The primary leaves of Phaseolus vulgaris were used as test material.”
Claim · model-written summary
Abscission layer formation proceeded under auxin despite antiauxin.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- the auxine0
- Outcome
- abscission layer formation takes placee0
- Qualifier
- presence of the antiauxine0
Not reportedDirection
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.”
e1“The primary leaves of Phaseolus vulgaris were used as test material.”
Claim · model-written summary
Abscission layer formation had a centripetal sequence in all cases.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Outcome
- centripetal sequence of abscission layer formatione0
- Qualifier
- in all casese0
Not reportedDirection
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.”
e1“The primary leaves of Phaseolus vulgaris were used as test material.”
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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.