Abstract
Experiments have been done to confirm the previously reported effect of indoleacetic acid (IAA) on the rate of CO(2) assimilation in bean leaves. It was shown that spraying the leaves of a variety of plants caused an increase in the rate of CO(2) assimilation from 30% to 100% during the half-hour to 1 hour period following spraying. The only plant tested which did not show such an effect was corn.The breaking of dormancy of axial buds in the bean plant was correlated with an increase in the rate of CO(2) assimilation in adjacent leaves for a brief period of time. It has been shown that IAA solution sprayed on 1 leaflet of a leaf can cause an increase in the rate of CO(2) assimilation in the other leaflets, and that IAA applied to the cut stem of a leaflet or a developing bud can be transported to adjacent leaves and cause an increase in the CO(2) assimilation rate. The reaction caused by IAA is very similar to that caused by the breaking of dormancy of a bud. This indicates that the bud break response in CO(2) assimilation in leaves is caused by auxin synthesized in a bud as it begins to grow, and exported into adjacent leaves.
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Claims 8
Claim · model-written summary
Spraying IAA increased CO2 assimilation by 30% to 100% in tested plants during the following half hour to hour.
- Taxon
- a variety of plantse1
- Organ / stage
- leavese1
- Treatment
- indoleacetic acid (IAA)e0
- Outcome
- rate of CO(2) assimilatione1
- Direction
- increasee1
- Value
- 30% to 100%e1
- Qualifier
- during the half-hour to 1 hour period following sprayinge1
Not reportedComparator
Verbatim
e0“Experiments have been done to confirm the previously reported effect of indoleacetic acid (IAA) on the rate of CO(2) assimilation in bean leaves.”
e1“It was shown that spraying the leaves of a variety of plants caused an increase in the rate of CO(2) assimilation from 30% to 100% during the half-hour to 1 hour period following spraying.”
Claim · model-written summary
Corn did not show the assimilation increase seen in the other tested plants after IAA spraying.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- indoleacetic acid (IAA)e1
- Outcome
- rate of CO(2) assimilatione1
- Direction
- did not show such an effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The only plant tested which did not show such an effect was corn.”
e1“Experiments have been done to confirm the previously reported effect of indoleacetic acid (IAA) on the rate of CO(2) assimilation in bean leaves.”
Claim · model-written summary
Bean axial bud dormancy release correlated with a brief increase in adjacent leaf CO2 assimilation.
Verbatim
e0“The breaking of dormancy of axial buds in the bean plant was correlated with an increase in the rate of CO(2) assimilation in adjacent leaves for a brief period of time.”
Claim · model-written summary
IAA sprayed on one bean leaflet increased CO2 assimilation in other leaflets.
- Taxon
- beane1
- Organ / stage
- other leafletse0
- Treatment
- IAA solution sprayed on 1 leaflet of a leafe0
- Outcome
- rate of CO(2) assimilatione0
- Direction
- increasee0
Not reportedComparator
Verbatim
e0“It has been shown that IAA solution sprayed on 1 leaflet of a leaf can cause an increase in the rate of CO(2) assimilation in the other leaflets”
e1“The breaking of dormancy of axial buds in the bean plant was correlated with an increase in the rate of CO(2) assimilation in adjacent leaves for a brief period of time.”
Claim · model-written summary
IAA applied to a cut leaflet stem can move to adjacent bean leaves and increase CO2 assimilation.
- Taxon
- beane1
- Treatment
- IAA applied to the cut stem of a leaflete0
- Outcome
- CO(2) assimilation ratee0
- Direction
- increasee0
- Qualifier
- can be transported to adjacent leavese0
Not reportedComparator
Verbatim
e0“IAA applied to the cut stem of a leaflet or a developing bud can be transported to adjacent leaves and cause an increase in the CO(2) assimilation rate.”
e1“The breaking of dormancy of axial buds in the bean plant was correlated with an increase in the rate of CO(2) assimilation in adjacent leaves for a brief period of time.”
Claim · model-written summary
IAA applied to a developing bud can move to adjacent bean leaves and increase CO2 assimilation.
- Taxon
- beane1
- Organ / stage
- developing bude0
- Treatment
- IAAe0
- Outcome
- CO(2) assimilation ratee0
- Direction
- increasee0
- Qualifier
- can be transported to adjacent leavese0
Not reportedComparator
Verbatim
e0“IAA applied to the cut stem of a leaflet or a developing bud can be transported to adjacent leaves and cause an increase in the CO(2) assimilation rate.”
e1“The breaking of dormancy of axial buds in the bean plant was correlated with an increase in the rate of CO(2) assimilation in adjacent leaves for a brief period of time.”
Claim · model-written summary
The IAA response is very similar to the response caused by bud dormancy release in bean.
Verbatim
e0“The reaction caused by IAA is very similar to that caused by the breaking of dormancy of a bud.”
e1“The breaking of dormancy of axial buds in the bean plant was correlated with an increase in the rate of CO(2) assimilation in adjacent leaves for a brief period of time.”
Claim · model-written summary
The authors infer that auxin synthesized in growing buds and exported to adjacent bean leaves causes the assimilation response to bud break.
Verbatim
e0“This indicates that the bud break response in CO(2) assimilation in leaves is caused by auxin synthesized in a bud as it begins to grow, and exported into adjacent leaves.”
e1“The breaking of dormancy of axial buds in the bean plant was correlated with an increase in the rate of CO(2) assimilation in adjacent leaves for a brief period of time.”
The same questions in other papers
indole-3-acetic acid · physiology: photosynthesis · Phaseolus vulgaris (common bean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
indole-3-acetic acid · physiology: photosynthesis · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- no effect
application · physiology: photosynthesis · Phaseolus vulgaris (common bean)Positive and negative results
16 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- no effect
17 papers more in this group
See all 21 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.