Claim · model-written summary
High leaf Pb concentration reduced plant dry mass and height.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- high concentration of Pbe0
- Outcome
- dry mass and the height of plantse0
- Direction
- reducede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the presence of high concentration of Pb in the leaf area, the dry mass and the height of plants were reduced.”
t0“sunflower”
t1“sunflower”
Title
Effect of excess lead on sunflower growth and photosynthesis
R Kastori; M. Plesničar; Z. Sakač; et al. Journal of Plant Nutrition 1998. doi:10.1080/01904169809365384
Other claims from this paper (9)
- Association Plant Pb content rose with Pb concentration in the nutrient medium.
- Observation Pb accumulation was greater in roots than stems and leaves.
- Intervention effect Lead treatment markedly reduced chlorophyll content.
- Intervention effect Lead treatment caused smaller decreases in photosynthetic oxygen evaluation and PSII efficiency at low light.
- Mechanism The authors interpret lead as reducing rather than destroying the photosynthetic apparatus.
- Intervention effect The highest Pb concentration decreased photochemical quenching at saturating PFD.
- Intervention effect The highest Pb concentration decreased efficiency of PSll electron transport at saturating PFD.
- Intervention effect The highest Pb concentration significantly affected nonphotochemical fluorescence quenching.
- Mechanism The authors infer increased thylakoid proton gradient and decreased photophosphorylation under highest Pb.