Claim · model-written summary
Pyruvate, Pi dikinase activity was generally just sufficient to account for saturating-light photosynthesis and may limit C4 photosynthesis.
- Gene
- pyruvate, Pi dikinasee1
- Outcome
- rates of photosynthesis under saturating lighte1
- Qualifier
- may be rate limiting enzymese1
Zea maysNot reportedMaterialCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize ( Zea mays L. Hybrid Sweet Corn, Royal Crest)”
e1“RuBP carboxylase (EC 4.1.1.39) and pyruvate, Pi dikinase (EC 2.7.9.1) were generally just sufficient to account for rates of photosynthesis under saturating light; thus, these may be rate limiting enzymes in C 4 photosynthesis”
Title
Hideaki Usuda; Maurice S. B. Ku; Gerald E. Edwards Physiologia Plantarum 1985. doi:10.1111/j.1399-3054.1985.tb02819.x
Other claims from this paper (11)
- Intervention effect Sun-grown plants had a higher light compensation point than plants grown under lower light.
- Observation At about one-quarter sunlight, plants from all growth regimes had similar photosynthesis rates.
- Intervention effect Under saturating light, sun-grown plants had substantially higher photosynthesis rates.
- Intervention effect Sun-grown plants had increased photosynthetic enzyme activity.
- Intervention effect Sun-grown plants had increased soluble leaf protein.
- Mechanism RuBP carboxylase activity was generally just sufficient to account for saturating-light photosynthesis and may limit C4 photosynthesis.
- Association Pyruvate, Pi dikinase was light activated and increased in activity as light intensity rose.
- Association NADP-malate dehydrogenase was light activated and increased in activity as light intensity rose.
- Association In low-light-grown plants, pyruvate, Pi dikinase activity closely paralleled photosynthetic rate across light levels.
- Association Under increasing light, pyruvate, Pi dikinase activation proceeded faster than photosynthesis in sun-grown plants.
- Association Under increasing light, NADP-malate dehydrogenase activation proceeded faster than photosynthesis in sun-grown plants.