Claim · model-written summary
GA 3 added after 50 or 98 hours of polyamine culture abolished ODC inhibition.
- Taxon
- barley
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Hordeum vulgaret0 - Treatment
- Addition of GA 3e0
- Outcome
- inhibition of ODC activitye0
- Direction
- abolishese0
- Qualifier
- 50 or 98 he0
- Comparator
- presence of polyaminese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
t0“barley seeds”
e0“Addition of GA 3 to cultures which have been grown for 50 or 98 h in the presence of polyamines, abolishes the observed inhibition of ODC activity”
Title
Dimitrios A. Kyriakidis Physiologia Plantarum 1983. doi:10.1111/j.1399-3054.1983.tb02775.x
Other claims from this paper (10)
- Intervention effect Gibberellic acid induced a fourfold increase in ornithine decarboxylase activity during barley seed germination.
- Intervention effect β‐indolylacetic acid induced a fourfold increase in ornithine decarboxylase activity during barley seed germination.
- Observation The optimal GA 3 concentration for ODC induction was 10 –5 M.
- Observation The optimal IAA concentration for ODC induction was 10 –3 M.
- Intervention effect Putrescine at 10 –3 M significantly inhibited ODC activity.
- Intervention effect Spermidine at 10 –3 M significantly inhibited ODC activity.
- Mechanism Polyamine inhibition was attributed to induction of an ODC protein inhibitor, antizyme, with apparent molecular weight 16 000 ± 2 000 daltons.
- Intervention effect Polyamines added after 50 or 98 hours did not change GA 3 induced ODC activity.
- Intervention effect Cadaverine enhanced ODC activity.
- Intervention effect 1,8‐diaminooctane had no effect on ODC activity.