Claim · model-written summary
Nitrogen-free preincubation raised AIB accumulation ratio above 4.5 at 10 micromolar external AIB.
- Taxon
- soybean
Glycine maxt0 - Treatment
- 18-hour preincubation in nitrogen-free mediume0
- Outcome
- accumulation ratio of AIBe0
- Direction
- exceedede0
- Value
- 4.5e0
- Qualifier
- external AIB concentration of 10 micromolare0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After an 18-hour preincubation in nitrogen-free medium the accumulation ratio of AIB exceeded 4.5 at an external AIB concentration of 10 micromolar”
t0“Soybean Embryos”
Title
Derepression of Amino Acid-H+ Cotransport in Developing Soybean Embryos
Alan B. Bennett; Roger M. Spanswick PLANT PHYSIOLOGY 1983. doi:10.1104/pp.72.3.781
Other claims from this paper (10)
- Observation Fresh embryos had AIB accumulation ratios no greater than 1.0.
- Intervention effect Sucrose during preincubation inhibited enhanced glutamine uptake by 43%.
- Intervention effect NH(4)NO(3) inhibited enhanced glutamine uptake by 51%.
- Intervention effect Glutamine inhibited enhanced glutamine uptake by 96%.
- Mechanism Uptake time course suggested derepression of new carrier synthesis.
- Association Increased glutamine-induced membrane depolarization paralleled enhanced uptake.
- Observation Glutamine uptake had saturable and nonsaturable components.
- Mechanism The saturable component was attributed to amino acid-H(+) cotransport derepressed by nitrogen or carbon starvation.
- Observation Saturable-system uptake in freshly excised embryos was negligible at physiological amino-acid concentrations.
- Mechanism Nonsaturable uptake was judged primary for nitrogen nutrition of developing soybean embryos.