Abstract
The auxin transport inhibitors 2, 3, 5-triiodobenzoic acid (TIBA) and naphthylphthalamic acid (NPA) inhibited adventitious root formation (ARF) induced by indol-3-butyric acid (IBA) on cuttings from etiolated mung-bean seedlings floated on solutions of the growth regulators. The concentrations of TIBA and NPA required for a 25 per cent reduction in ARF with 10 μM IBA were estimated by linear interpolation to be 11.3 μm and 0.42 μM respectively. NPA is a particularly potent inhibitor of IBA-induced ARF. The inhibitory effect of either compound was reversible by higher concentrations of IBA. NPA had no effect when applied after the auxin treatment. The inhibitory effects of TIBA or NPA could not be explained by effects on the uptake or metabolism of [2-14C]IAA. Considering this and other evidence, it is suggested that NPA and possibly TIBA are acting as specific antagonists of auxin in the induction of ARF.
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Claims 9
Claim · model-written summary
TIBA inhibited IBA-induced adventitious root formation in etiolated mung-bean cuttings.
- Taxon
- mung-bean
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Vigna radiatat0 - Organ / stage
- etiolated mung-bean seedlingse0
- Treatment
- 2, 3, 5-triiodobenzoic acid (TIBA)e0
- Outcome
- adventitious root formation (ARF)e0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“mung-bean Vigna radiata (L.) Wilczek”
e0“The auxin transport inhibitors 2, 3, 5-triiodobenzoic acid (TIBA) and naphthylphthalamic acid (NPA) inhibited adventitious root formation (ARF) induced by indol-3-butyric acid (IBA) on cuttings from etiolated mung-bean seedlings floated on solutions of the growth regulators.”
Claim · model-written summary
NPA inhibited IBA-induced adventitious root formation in etiolated mung-bean cuttings.
- Taxon
- mung-beanVigna radiatat0
- Treatment
- naphthylphthalamic acid (NPA)e0
- Outcome
- adventitious root formation (ARF)e0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung-bean Vigna radiata (L.) Wilczek”
e0“The auxin transport inhibitors 2, 3, 5-triiodobenzoic acid (TIBA) and naphthylphthalamic acid (NPA) inhibited adventitious root formation (ARF) induced by indol-3-butyric acid (IBA) on cuttings from etiolated mung-bean seedlings floated on solutions of the growth regulators.”
Claim · model-written summary
With 10 μM IBA, the estimated TIBA concentration for 25 per cent reduction in rooting was 11.3 μm.
- Taxon
- mung-beanVigna radiatat0
- Treatment
- TIBAe0
- Outcome
- ARFe0
- Direction
- reductione0
- Value
- 11.3 μme0
- Qualifier
- with 10 μM IBAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung-bean Vigna radiata (L.) Wilczek”
e0“The concentrations of TIBA and NPA required for a 25 per cent reduction in ARF with 10 μM IBA were estimated by linear interpolation to be 11.3 μm and 0.42 μM respectively.”
Claim · model-written summary
With 10 μM IBA, the estimated NPA concentration for 25 per cent reduction in rooting was 0.42 μM.
- Taxon
- mung-beanVigna radiatat0
- Treatment
- NPAe0
- Outcome
- ARFe0
- Direction
- reductione0
- Value
- 0.42 μMe0
- Qualifier
- with 10 μM IBAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung-bean Vigna radiata (L.) Wilczek”
e0“The concentrations of TIBA and NPA required for a 25 per cent reduction in ARF with 10 μM IBA were estimated by linear interpolation to be 11.3 μm and 0.42 μM respectively.”
Claim · model-written summary
Higher IBA concentrations reversed the inhibitory effect of TIBA.
- Taxon
- mung-beanVigna radiatat0
- Treatment
- higher concentrations of IBAe0
- Outcome
- inhibitory effecte0
- Direction
- reversiblee0
- Qualifier
- either compounde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung-bean Vigna radiata (L.) Wilczek”
e0“The inhibitory effect of either compound was reversible by higher concentrations of IBA.”
Claim · model-written summary
Higher IBA concentrations reversed the inhibitory effect of NPA.
- Taxon
- mung-beanVigna radiatat0
- Treatment
- higher concentrations of IBAe0
- Outcome
- inhibitory effecte0
- Direction
- reversiblee0
- Qualifier
- either compounde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung-bean Vigna radiata (L.) Wilczek”
e0“The inhibitory effect of either compound was reversible by higher concentrations of IBA.”
Claim · model-written summary
NPA applied after auxin treatment had no effect on rooting.
- Taxon
- mung-beanVigna radiatat0
- Treatment
- NPAe0
- Outcome
- effecte0
- Direction
- no effecte0
- Qualifier
- after the auxin treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung-bean Vigna radiata (L.) Wilczek”
e0“NPA had no effect when applied after the auxin treatment.”
Claim · model-written summary
Effects on IAA uptake or metabolism did not explain inhibition by TIBA or NPA.
- Taxon
- mung-beanVigna radiatat0
- Outcome
- inhibitory effectse0
- Qualifier
- effects on the uptake or metabolism of [2-14C]IAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung-bean Vigna radiata (L.) Wilczek”
e0“The inhibitory effects of TIBA or NPA could not be explained by effects on the uptake or metabolism of [2-14C]IAA.”
Claim · model-written summary
The authors suggest NPA, and possibly TIBA, act as specific auxin antagonists during induction of adventitious rooting.
- Taxon
- mung-beanVigna radiatat0
- Outcome
- induction of ARFe0
- Qualifier
- specific antagonists of auxine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung-bean Vigna radiata (L.) Wilczek”
e0“it is suggested that NPA and possibly TIBA are acting as specific antagonists of auxin in the induction of ARF.”
The same questions in other papers
2,3,5-triiodobenzoic acid · growth · Vigna radiata (mung bean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
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.