Claim · model-written summary
At low nitrogen, 94% lower PRK activity decreased leaf photosynthesis by up to 50%.
- Taxon
- tobacco (Nicotiana tabacum L.)
Nicotiana tabacume1 - Treatment
- 94% decrease in PRK activitye0
- Outcome
- leaf photosynthesise0
- Direction
- decreasede0
- Value
- 50%e0
- Qualifier
- low Ne0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At low N a 94% decrease in PRK activity had a greater effect on leaf photosynthesis (decreased by up to 50%)”
e1“transgenic tobacco (Nicotiana tabacum L.)”
Title
Fiona M. Banks; Simon P. Driscoll; Martin A.J. Parry; et al. PLANT PHYSIOLOGY 1999. doi:10.1104/pp.119.3.1125
Other claims from this paper (10)
- Association PRK activation state rose as enzyme amount was genetically reduced at both nitrogen levels.
- Intervention effect At high nitrogen, a 94% PRK activity decrease had only a 20% effect on photosynthesis and growth.
- Intervention effect At low nitrogen, 94% lower PRK activity decreased whole-plant photosynthesis by up to 35%.
- Association Plants with lower PRK activity were up to 35% smaller than plants with higher PRK activity.
- Observation The smaller plants had less structural dry matter.
- Observation Starch decreased three- to fourfold but still reached 24% to 31% of dry weight.
- Observation Young leaves contained more starch than older leaves in older plants.
- Observation Leaves had higher ion and water content.
- Observation Specific leaf area was higher.
- Observation Shoot to root allocation was unaltered.