Abstract
The suggestion that indole-3-acetic acid (IAA)-stimulated ethylene production is associated with oxidative degradation of IAA and is mediated by 3-methyleneoxindole (MOI) has been tested in mung bean (Phaseolus aureus Roxb.) hypocotyl segments. While IAA actively stimulated ethylene production, MOI and indole-3-aldehyde, the major products of IAA oxidation, were inactive. Tissues treated with a mixture of intermediates of IAA oxidation, obtained from a 1-hour incubation of IAA with peroxidase, failed to stimulate ethylene production. Furthermore, chlorogenic acid and p-coumaric acid, which are known to interfere with the enzymic oxidation of IAA to MOI, had no effect on IAA-stimulated ethylene production. Other oxidation products of IAA, including oxindole-3-acetic acid, indole-3-carboxylic acid, (2-sulfoindole)-3-acetic acid, and dioxindole-3-acetic acid, were all inactive. 1-Naphthaleneacetic acid was as active as IAA in stimulating ethylene production but was decarboxylated at a much lower rate than IAA, suggesting that oxidative decarboxylation of auxins is not linked to ethylene production. These results demonstrate that IAA-stimulated ethylene production in mung bean hypocotyl tissue is not mediated by MOI or other associated oxidative products of IAA.
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Claims 8
Claim · model-written summary
IAA actively stimulated ethylene production in mung bean hypocotyl segments.
- Taxon
- mung bean
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Vigna radiatae0 - Organ / stage
- hypocotyl segmentse0
- Treatment
- IAAe5
- Outcome
- ethylene productione5
- Direction
- actively stimulatede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“tested in mung bean (Phaseolus aureus Roxb.) hypocotyl segments”
e5“While IAA actively stimulated ethylene production, MOI and indole-3-aldehyde, the major products of IAA oxidation, were inactive”
Claim · model-written summary
MOI and indole-3-aldehyde, the major products of IAA oxidation, were inactive on ethylene production in mung bean.
- Taxon
- mung beanVigna radiatae0
- Treatment
- MOI and indole-3-aldehydee5
- Outcome
- ethylene productione5
- Qualifier
- were inactivee5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tested in mung bean (Phaseolus aureus Roxb.) hypocotyl segments”
e5“While IAA actively stimulated ethylene production, MOI and indole-3-aldehyde, the major products of IAA oxidation, were inactive”
Claim · model-written summary
A mixture of IAA oxidation intermediates failed to stimulate ethylene production in mung bean hypocotyls.
- Taxon
- mung beanVigna radiatae0
- Treatment
- mixture of intermediates of IAA oxidatione2
- Outcome
- ethylene productione2
- Qualifier
- failed to stimulatee2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tested in mung bean (Phaseolus aureus Roxb.) hypocotyl segments”
e2“Tissues treated with a mixture of intermediates of IAA oxidation, obtained from a 1-hour incubation of IAA with peroxidase, failed to stimulate ethylene production”
Claim · model-written summary
Chlorogenic acid and p-coumaric acid had no effect on IAA-stimulated ethylene production in mung bean.
- Taxon
- mung beanVigna radiatae0
- Treatment
- chlorogenic acid and p-coumaric acide3
- Outcome
- IAA-stimulated ethylene productione3
- Qualifier
- had no effecte3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tested in mung bean (Phaseolus aureus Roxb.) hypocotyl segments”
e3“Furthermore, chlorogenic acid and p-coumaric acid, which are known to interfere with the enzymic oxidation of IAA to MOI, had no effect on IAA-stimulated ethylene production”
Claim · model-written summary
Oxindole-3-acetic acid, indole-3-carboxylic acid and (2-sulfoindole)-3-acetic acid were inactive on ethylene production in mung bean.
- Taxon
- mung beanVigna radiatae0
- Treatment
- oxindole-3-acetic acid, indole-3-carboxylic acid, (2-sulfoindole)-3-acetic acide4
- Outcome
- ethylene productione5
- Qualifier
- were all inactivee4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tested in mung bean (Phaseolus aureus Roxb.) hypocotyl segments”
e4“Other oxidation products of IAA, including oxindole-3-acetic acid, indole-3-carboxylic acid, (2-sulfoindole)-3-acetic acid, and dioxindole-3-acetic acid, were all inactive”
e5“While IAA actively stimulated ethylene production, MOI and indole-3-aldehyde, the major products of IAA oxidation, were inactive”
Claim · model-written summary
Dioxindole-3-acetic acid was inactive on ethylene production in mung bean.
- Taxon
- mung beanVigna radiatae0
- Treatment
- dioxindole-3-acetic acide4
- Outcome
- ethylene productione5
- Qualifier
- were all inactivee4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tested in mung bean (Phaseolus aureus Roxb.) hypocotyl segments”
e4“Other oxidation products of IAA, including oxindole-3-acetic acid, indole-3-carboxylic acid, (2-sulfoindole)-3-acetic acid, and dioxindole-3-acetic acid, were all inactive”
e5“While IAA actively stimulated ethylene production, MOI and indole-3-aldehyde, the major products of IAA oxidation, were inactive”
Claim · model-written summary
1-Naphthaleneacetic acid was as active as IAA in stimulating ethylene production in mung bean.
- Taxon
- mung beanVigna radiatae0
- Treatment
- 1-Naphthaleneacetic acide6
- Outcome
- ethylene productione6
- Direction
- as active ase6
- Comparator
- IAAe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tested in mung bean (Phaseolus aureus Roxb.) hypocotyl segments”
e6“1-Naphthaleneacetic acid was as active as IAA in stimulating ethylene production but was decarboxylated at a much lower rate than IAA”
Claim · model-written summary
1-Naphthaleneacetic acid was decarboxylated at a much lower rate than IAA in mung bean.
- Taxon
- mung beanVigna radiatae0
- Treatment
- 1-Naphthaleneacetic acide6
- Outcome
- decarboxylatede6
- Direction
- much lowere6
- Comparator
- IAAe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tested in mung bean (Phaseolus aureus Roxb.) hypocotyl segments”
e6“1-Naphthaleneacetic acid was as active as IAA in stimulating ethylene production but was decarboxylated at a much lower rate than IAA”
The same questions in other papers
indole-3-acetic acid · physiology: hormones · Vigna radiata (mung bean)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 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.