Claim · model-written summary
Phosphate deficiency decreased PSII photochemistry efficiency.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- Phosphate deficiencye0
- Outcome
- efficiency of photosystem two (PSII) photochemistrye0
- Direction
- decreasede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphate deficiency appreciably decreased photosynthetic oxygen evolution by leaves, the efficiency of photosystem two (PSII) photochemistry and quantum efficiency of PSII electron transport.”
t0“sunflower (Helianthus annuus L.)”
Title
Marijana Plesniˇar; Rudolf Kastori; Novica Petrović; et al. Journal of Experimental Botany 1994. doi:10.1093/jxb/45.7.919
Other claims from this paper (9)
- Observation Photosynthesis was optimal at 0.5 mol m−3 Pi.
- Observation Light utilization capacity was highest at 0.5 mol m−3 Pi.
- Observation Leaf organic phosphorus content was maximal at the optimal photosynthesis phosphate concentration.
- Intervention effect Low medium phosphate inhibited plant growth rate.
- Intervention effect Phosphate deficiency decreased photosynthetic oxygen evolution.
- Intervention effect Phosphate deficiency decreased PSII electron transport quantum efficiency.
- Observation PSII primary electron acceptor QA was highly oxidized at 0.1 mol m−3 Pi.
- Mechanism PSII electron transport did not limit photosynthesis in phosphate deficient leaves.
- Mechanism Reduced RuBP regeneration efficiency mainly caused diminished photosynthesis under sub and supra optimal Pi at high light.