Claim · model-written summary
IAA strongly stimulated stem elongation in dwarf le peas, increasing growth rate after 20 minutes then declining.
- Taxon
- pea
Lathyrus oleraceuse0 - Material
- le mutantse0
- Treatment
- indoleacetic acid [IAA]e0
- Outcome
- stem elongatione0
- Direction
- stimulatede0
- Qualifier
- after 20 min followed by a slow declinee0
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“auxin (indoleacetic acid [IAA]) strongly stimulated stem elongation in dwarf GA1-deficient le mutants of light-grown pea (Pisum sativum L.): IAA elicited a sharp increase in growth rate after 20 min followed by a slow decline”
Title
T. Yang; P. J. Davies; J. B. Reid PLANT PHYSIOLOGY 1996. doi:10.1104/pp.110.3.1029
Other claims from this paper (14)
- Intervention effect GA stimulated elongation in le peas with a three-hour lag and gradual increase.
- Observation GA and IAA elongation responses were additive.
- Observation GA acted mainly in internodes less than 25% expanded.
- Observation IAA acted in older elongating internodes.
- Mechanism IAA stimulated growth through cell extension.
- Mechanism GA stimulated growth by increasing cell length and cell number.
- Intervention effect Dwarf lkb peas elongated poorly after GA, through increased cell number.
- Intervention effect Dwarf lkb peas responded strongly to IAA.
- Intervention effect GA substantially elongated lkb plants only with IAA present.
- Observation Lkb peas had low IAA levels.
- Mechanism The authors infer that low endogenous auxin suppresses growth in dwarf lkb peas.
- Mechanism GA may enhance auxin-induced cell elongation but cannot promote elongation without auxin.
- Mechanism Auxin and GA control separate processes that together contribute to stem elongation.
- Mechanism Deficiency of either auxin or GA leads to dwarf phenotype.