Claim · model-written summary
Oxalate inhibition of PSII, RuBP regeneration and carboxylation leads to excess ROS.
- Taxon
- tobacco
Nicotiana tabacumt0 - Compound
- C2O4(2-)e0
- Outcome
- over production of reactive oxygen species (ROS)e0
- Qualifier
- inhibits PSII activity, as well as the rate of RuBP regeneration and carboxylation efficiencye0
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“C2O4(2-) inhibits PSII activity, as well as the rate of RuBP regeneration and carboxylation efficiency, leading to the over production of reactive oxygen species (ROS).”
t0“tobacco leaves”
Title
Cheng Yang; Zishan Zhang; Huiyuan Gao; et al. BMC Plant Biology 2014. doi:10.1186/s12870-014-0240-4
Other claims from this paper (16)
- Intervention effect Sclerotinia infection reduced O2 evolution and Fv/Fm under high light.
- Intervention effect H2C2O4 at pH 4 significantly decreased photosynthetic performance.
- Intervention effect H3PO4 at matched pH decreased performance less than H2C2O4.
- Intervention effect HCl at matched pH decreased performance less than H2C2O4.
- Mechanism Acidity explained only part of the photosynthesis decrease.
- Intervention effect K2C2O4 reduced Fv/Fm by about 70% of the effect of H2C2O4.
- Intervention effect K2C2O4 did not further reduce photosynthetic performance when D1 synthesis was fully inhibited.
- Mechanism Oxalate represses D1 synthesis and thereby inhibits PSII.
- Intervention effect K2C2O4 inhibited RuBP regeneration.
- Intervention effect K2C2O4 inhibited carboxylation efficiency.
- Intervention effect K2C2O4 did not further decrease performance with carbon assimilation inhibited.
- Mechanism C2O4(2-) partially inhibits PSII through carbon assimilation repression.
- Intervention effect C2O4(2-) inhibited PSII activity.
- Intervention effect C2O4(2-) did not inhibit PSI activity.
- Mechanism Oxalate damage to photosynthetic apparatus exceeds the effect of acidity.
- Mechanism ROS may accelerate PSII photoinhibition through D1 synthesis inhibition.