Abstract
Decapitation of dwarf bean (Phaseolus vulgaris L. `Bulgarian') reduced the longitudinal and radial growth of the subjacent internode and inhibited the differentiation of the vascular bundles and cambial layer. Indole-3-acetic acid (IAA) in lanolin restored radial growth but did not enhance the elongation of the decapitated internode Gibberellic acid (GA) in lanolin did not affect radial growth or cell expansion but strongly enhanced transverse cell divisions and, consequently, promoted internode elongation. Cell elongation was enhanced when both IAA and GA were applied simultaneously, but IAA inhibited the GA-promoted cell divisions. The effects of IAA were duplicated by Ethrel (2-chloroethyl phosphonic acid), an ethylene-releasing agent. I suggest that (1) internode elongation is modulated by a balance between the promotive effects of GA and inhibitory effects of IAA on cell division and their synergistic effects on cell elongation, and (2) the action of IAA and its interaction with GA are ethylene-mediated.
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Claims 12
Claim · model-written summary
Decapitation reduced longitudinal and radial growth of the subjacent bean internode.
- Taxon
- Phaseolus vulgaris L.
Phaseolus vulgarise0 - Material
- Bulgariane0
- Treatment
- Decapitatione0
- Outcome
- longitudinal and radial growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Decapitation of dwarf bean (Phaseolus vulgaris L. `Bulgarian') reduced the longitudinal and radial growth of the subjacent internode”
Claim · model-written summary
Decapitation inhibited differentiation of vascular bundles and the cambial layer.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarise0
- Treatment
- Decapitatione0
- Outcome
- differentiation of the vascular bundles and cambial layere0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Decapitation of dwarf bean (Phaseolus vulgaris L. `Bulgarian') reduced the longitudinal and radial growth of the subjacent internode and inhibited the differentiation of the vascular bundles and cambial layer.”
Claim · model-written summary
IAA in lanolin restored radial growth in the decapitated internode.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- Indole-3-acetic acid (IAA) in lanoline0
- Outcome
- radial growthe0
- Direction
- restorede0
- Comparator
- decapitated internodee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris L.”
e0“Indole-3-acetic acid (IAA) in lanolin restored radial growth but did not enhance the elongation of the decapitated internode”
Claim · model-written summary
IAA in lanolin did not enhance elongation of the decapitated internode.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- Indole-3-acetic acid (IAA) in lanoline0
- Outcome
- elongatione0
- Direction
- did not enhancee0
- Comparator
- decapitated internodee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris L.”
e0“Indole-3-acetic acid (IAA) in lanolin restored radial growth but did not enhance the elongation of the decapitated internode”
Claim · model-written summary
GA in lanolin did not affect radial growth or cell expansion.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- Gibberellic acid (GA) in lanoline0
- Outcome
- radial growth or cell expansione0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris L.”
e0“Gibberellic acid (GA) in lanolin did not affect radial growth or cell expansion”
Claim · model-written summary
GA in lanolin strongly enhanced transverse cell divisions.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- Gibberellic acid (GA) in lanoline0
- Outcome
- transverse cell divisionse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris L.”
e0“Gibberellic acid (GA) in lanolin did not affect radial growth or cell expansion but strongly enhanced transverse cell divisions”
Claim · model-written summary
GA promoted internode elongation.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- Gibberellic acid (GA) in lanoline0
- Outcome
- internode elongatione0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris L.”
e0“Gibberellic acid (GA) in lanolin did not affect radial growth or cell expansion but strongly enhanced transverse cell divisions and, consequently, promoted internode elongation.”
Claim · model-written summary
Applying IAA and GA together enhanced cell elongation.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- both IAA and GA were applied simultaneouslye0
- Outcome
- Cell elongatione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris L.”
e0“Cell elongation was enhanced when both IAA and GA were applied simultaneously”
Claim · model-written summary
IAA inhibited GA-promoted cell divisions.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- IAAe0
- Outcome
- cell divisionse0
- Direction
- inhibitede0
- Comparator
- GA-promoted cell divisionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris L.”
e0“IAA inhibited the GA-promoted cell divisions.”
Claim · model-written summary
Ethrel duplicated the effects of IAA.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- Ethrel (2-chloroethyl phosphonic acid)e0
- Outcome
- effects of IAAe0
- Comparator
- IAAe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris L.”
e0“The effects of IAA were duplicated by Ethrel (2-chloroethyl phosphonic acid), an ethylene-releasing agent.”
Claim · model-written summary
The author proposes that GA and IAA jointly modulate internode elongation through cell division and cell elongation.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Outcome
- internode elongatione0
- Qualifier
- a balance between the promotive effects of GA and inhibitory effects of IAA on cell division and their synergistic effects on cell elongatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris L.”
e0“internode elongation is modulated by a balance between the promotive effects of GA and inhibitory effects of IAA on cell division and their synergistic effects on cell elongation”
Claim · model-written summary
The author proposes that IAA action and its interaction with GA are ethylene-mediated.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Outcome
- the action of IAA and its interaction with GAe0
- Qualifier
- ethylene-mediatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris L.”
e0“the action of IAA and its interaction with GA are ethylene-mediated.”
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