Claim · model-written summary
Drought reduced grapevine photosynthetic rate by about 70%.
- Taxon
- Vitis vinifera L.
Vitis viniferat0 - Treatment
- drought-stressede0
- Outcome
- photosynthetic ratese0
- Direction
- lowere0
- Value
- ca 70%e0
- Comparator
- well-watered plantse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to well-watered plants (predawn water potential, ΨPD = -0.13 ± 0.01 MPa), drought-stressed plants (ΨPD = -0.97 ± 0.01 MPa) had lower photosynthetic rates (ca 70%), stomatal conductance, and PSII activity”
t0“Vitis vinifera L. leaves”
Title
Joã o P. Maroco; M. Lucí et al. Australian Journal of Plant Physiology 2002. doi:10.1071/pp01040
Other claims from this paper (10)
- Intervention effect Drought reduced grapevine stomatal conductance and PSII activity.
- Intervention effect Drought increased stomatal limitation to photosynthesis by about 44%.
- Intervention effect Modeled maximum Rubisco carboxylation activity fell by about 32% under drought.
- Intervention effect Modeled ribulose-1,5-bisphosphate regeneration fell by about 27% under drought.
- Intervention effect Modeled triose phosphate utilization fell by about 37% under drought.
- Method / resource Modeled biochemical drought effects agreed with in vitro activities of carbon metabolism enzymes.
- Intervention effect Drought reduced quantum yields under ambient and saturating CO2.
- Intervention effect Drought decreased maximum photosynthetic rates under saturating light and CO2.
- Mechanism Stomatal closure strongly limited CO2 assimilation under drought.
- Method / resource Gas exchange modeling successfully predicted metabolic limits to photosynthesis.