Claim · model-written summary
Immature rapidly growing pumpkin fruits had much higher ascorbate oxidase activity than mature fruits.
- Taxon
- pumpkine0
- Organ / stage
- immature fruitse0
- Gene
- ascorbate oxidasee0
- Outcome
- activitiese0
- Direction
- much highere0
- Qualifier
- 0, 2, 4, and 7 d after anthesise0
- Comparator
- mature fruitse0
Not reportedMaterialCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingValue
Verbatim
e0“When ascorbate oxidase activity in developing pumpkin fruits was investigated, the activities in immature fruits that are rapidly growing at 0, 2, 4, and 7 d after anthesis were much higher than those in mature fruits at 14 and 30 d after anthesis.”
t0“pumpkin”
Title
Regulation of Ascorbate Oxidase Expression in Pumpkin by Auxin and Copper
Muneharu Esaka; Kouichi Fujisawa; Miwa Goto; et al. PLANT PHYSIOLOGY 1992. doi:10.1104/pp.100.1.231
Other claims from this paper (16)
- Observation Leaf ascorbate oxidase activity was about twice fruit activity.
- Observation Stem ascorbate oxidase activity was about 1.5 times fruit activity.
- Observation Seeds had little ascorbate oxidase activity.
- Observation Ascorbate oxidase mRNA was abundant in pumpkin leaves and stems.
- Observation Fruit ascorbate oxidase mRNA was lower than in leaves and stems.
- Observation Ascorbate oxidase mRNA was undetected in pumpkin seeds.
- Observation Specific ascorbate oxidase activity rose during early seedling growth.
- Observation Ascorbate oxidase mRNA also increased during early seedling growth.
- Intervention effect 2,4-D increased ascorbate oxidase activity in cultured pumpkin fruit tissue.
- Intervention effect 2,4-D increased ascorbate oxidase mRNA in cultured pumpkin fruit tissue.
- Intervention effect Ascorbate oxidase mRNA was most abundant at 10 mg/L 2,4-D.
- Mechanism The authors infer that ascorbate oxidase participates in cell growth.
- Intervention effect Copper increased ascorbate oxidase activity in pumpkin callus.
- Intervention effect Copper increased ascorbate oxidase protein abundance.
- Intervention effect Copper did not increase ascorbate oxidase mRNA.
- Mechanism Copper may regulate ascorbate oxidase at translation or a later step.