Abstract
When fully filled pods of bean plants were deseeded, the rate of axillary bud growth and the chlorophyll content of leaves were increased. Application of 0.1% indoleacetic acid (IAA) in lanolin on the deseeded pods caused abscission of axillary buds, inhibited growth of the remaining buds, and decreased leaf chlorophyll content. The response of bud development to fruit-applied IAA was concentration dependent between 0.001 and 0.1% IAA (representing from 2 to 200 micrograms IAA per fruit) resulting in greater growth inhibition at higher IAA concentrations.When plants were defruited so that the number of fruits per plant was adjusted to 0, 6, 12, or 18, a dosage effect of fruits on photosynthesis was observed. Removal of all fruits caused a rise in the CO(2)-exchange rate (CER). With increasing fruit dosage, plants showed leaf senescence of increasing intensity and a corresponding decline in CER. In contrast to the effect of fruit-applied IAA on leaves and buds, it delayed the senescence of treated fruits. When axillary buds were treated directly with aqueous solutions of IAA, no growth inhibition occurred.Abscisic acid (AbA) applied on deseeded pods, up to a concentration of 0.1% AbA in lanolin, failed to inhibit axillary bud development or to cause leaf senescence.The results support the hypothesis that the correlative control of axillary bud development and leaf senescence by fruits involves the participation of both IAA and AbA. IAA, released by the seeds, may play the role of the correlative signal that moves from the fruit to the target organ, where it stimulates the synthesis or accumulation of AbA. AbA, in turn, may be responsible for the inhibition of axillary bud development and the enhancement of leaf senescence.
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Claims 16
Claim · model-written summary
Deseeding fully filled pods of bean plants increased the rate of axillary bud growth and leaf chlorophyll content.
Verbatim
e0“bean plants”
e1“When fully filled pods of bean plants were deseeded, the rate of axillary bud growth and the chlorophyll content of leaves were increased”
Claim · model-written summary
Application of 0.1% IAA in lanolin on deseeded pods caused abscission of axillary buds.
- Taxon
- bean plantse0
- Treatment
- Application of 0.1% indoleacetic acid (IAA) in lanolin on the deseeded podse2
- Outcome
- abscission of axillary budse2
Not reportedComparatorDirection
Verbatim
e0“bean plants”
e2“Application of 0.1% indoleacetic acid (IAA) in lanolin on the deseeded pods caused abscission of axillary buds, inhibited growth of the remaining buds, and decreased leaf chlorophyll content”
Claim · model-written summary
Application of 0.1% IAA in lanolin on deseeded pods inhibited growth of the remaining axillary buds.
- Taxon
- bean plantse0
- Treatment
- Application of 0.1% indoleacetic acid (IAA) in lanolin on the deseeded podse2
- Outcome
- growth of the remaining budse2
- Direction
- inhibitede2
Not reportedComparator
Verbatim
e0“bean plants”
e2“Application of 0.1% indoleacetic acid (IAA) in lanolin on the deseeded pods caused abscission of axillary buds, inhibited growth of the remaining buds, and decreased leaf chlorophyll content”
Claim · model-written summary
Application of 0.1% IAA in lanolin on deseeded pods decreased leaf chlorophyll content.
- Taxon
- bean plantse0
- Treatment
- Application of 0.1% indoleacetic acid (IAA) in lanolin on the deseeded podse2
- Outcome
- leaf chlorophyll contente2
- Direction
- decreasede2
Not reportedComparator
Verbatim
e0“bean plants”
e2“Application of 0.1% indoleacetic acid (IAA) in lanolin on the deseeded pods caused abscission of axillary buds, inhibited growth of the remaining buds, and decreased leaf chlorophyll content”
Claim · model-written summary
Growth inhibition of axillary buds by fruit-applied IAA was concentration dependent between 0.001 and 0.1% IAA, greater at higher concentrations.
Verbatim
e0“bean plants”
e3“The response of bud development to fruit-applied IAA was concentration dependent between 0.001 and 0.1% IAA (representing from 2 to 200 micrograms IAA per fruit) resulting in greater growth inhibition at higher IAA concentrations”
Claim · model-written summary
Removing all fruits caused a rise in the CO2-exchange rate of bean plants.
Not reportedComparator
Verbatim
e0“bean plants”
e4“Removal of all fruits caused a rise in the CO(2)-exchange rate (CER)”
Claim · model-written summary
With increasing fruit dosage, leaf senescence of bean plants increased in intensity.
Verbatim
e0“bean plants”
e5“With increasing fruit dosage, plants showed leaf senescence of increasing intensity and a corresponding decline in CER”
Claim · model-written summary
With increasing fruit dosage, CER of bean plants declined.
Verbatim
e0“bean plants”
e5“With increasing fruit dosage, plants showed leaf senescence of increasing intensity and a corresponding decline in CER”
Claim · model-written summary
Fruit-applied IAA delayed the senescence of treated fruits.
- Taxon
- bean plantse0
- Treatment
- fruit-applied IAAe6
- Outcome
- senescence of treated fruitse6
- Direction
- delayede6
Not reportedComparator
Verbatim
e0“bean plants”
e6“In contrast to the effect of fruit-applied IAA on leaves and buds, it delayed the senescence of treated fruits”
Claim · model-written summary
Direct treatment of axillary buds with aqueous IAA caused no growth inhibition.
- Taxon
- bean plantse0
- Treatment
- aqueous solutions of IAAe7
- Outcome
- growth inhibitione7
- Direction
- no growth inhibition occurrede7
Not reportedComparator
Verbatim
e0“bean plants”
e7“When axillary buds were treated directly with aqueous solutions of IAA, no growth inhibition occurred”
Claim · model-written summary
Abscisic acid applied on deseeded pods did not inhibit axillary bud development.
- Taxon
- bean plantse0
- Treatment
- Abscisic acid (AbA) applied on deseeded podse1
- Outcome
- axillary bud developmente1
- Direction
- failed to inhibite1
Not reportedComparator
Verbatim
e0“bean plants”
e1“Abscisic acid (AbA) applied on deseeded pods, up to a concentration of 0.1% AbA in lanolin, failed to inhibit axillary bud development or to cause leaf senescence”
Claim · model-written summary
Abscisic acid applied on deseeded pods did not cause leaf senescence.
- Taxon
- bean plantse0
- Treatment
- Abscisic acid (AbA) applied on deseeded podse1
- Outcome
- leaf senescencee1
- Direction
- failede1
Not reportedComparator
Verbatim
e0“bean plants”
e1“Abscisic acid (AbA) applied on deseeded pods, up to a concentration of 0.1% AbA in lanolin, failed to inhibit axillary bud development or to cause leaf senescence”
Claim · model-written summary
The results support the hypothesis that correlative control of axillary bud development and leaf senescence by fruits involves both IAA and ABA.
Verbatim
e0“bean plants”
e2“The results support the hypothesis that the correlative control of axillary bud development and leaf senescence by fruits involves the participation of both IAA and AbA”
Claim · model-written summary
IAA released by the seeds may be the correlative signal from fruit to target organ that stimulates synthesis or accumulation of ABA.
Verbatim
e0“bean plants”
e3“IAA, released by the seeds, may play the role of the correlative signal that moves from the fruit to the target organ, where it stimulates the synthesis or accumulation of AbA”
Claim · model-written summary
ABA may be responsible for the inhibition of axillary bud development.
Verbatim
e0“bean plants”
e4“AbA, in turn, may be responsible for the inhibition of axillary bud development and the enhancement of leaf senescence”
Claim · model-written summary
ABA may be responsible for the enhancement of leaf senescence.
Verbatim
e0“bean plants”
e4“AbA, in turn, may be responsible for the inhibition of axillary bud development and the enhancement of leaf senescence”
The same questions in other papers
indole-3-acetic acid · disease · Phaseolus vulgaris (common bean)Positive and negative results
7 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 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.