Abstract
The objective of the study was to investigate the effect of As on some physiological parameters of maize in the early growth phases. Seedlings grown in a climatic box in a Hoagland-Arnon nutrient solution were treated with 0, 2 and 5 mg(As) dm-3 (pH 5.5). After 5 d of As treatment the changes in growth, leaf gas-exchange, chlorophyll (Chl) content, Chl fluorescence, peroxidase activity and lipid peroxidation in roots were recorded. The applied As decreased the growth, leaf area, and biomass accumulation, induced lipid peroxidation and increased peroxidase activity, especially at concentration 5 mg(As) dm-3. It also decreased the Chl, carotenoid (Car) and protein contents. A decrease in the variable to maximum fluorescence ratio (Fv/Fm) indicated lower photosynthetic efficiency.
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Claims 5
Claim · model-written summary
As decreased maize seedling growth, leaf area, and biomass accumulation.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“The applied As decreased the growth, leaf area, and biomass accumulation”
Claim · model-written summary
As induced lipid peroxidation in maize roots, especially at 5 mg(As) dm-3.
- Treatment
- Ase0
- Outcome
- lipid peroxidatione0
- Direction
- inducede0
- Qualifier
- especially at concentration 5 mg(As) dm-3e0
Not reportedOrgan / stageComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“induced lipid peroxidation and increased peroxidase activity, especially at concentration 5 mg(As) dm-3”
Claim · model-written summary
As increased peroxidase activity, especially at 5 mg(As) dm-3.
- Outcome
- peroxidase activitye0
- Direction
- increasede0
- Qualifier
- especially at concentration 5 mg(As) dm-3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“increased peroxidase activity, especially at concentration 5 mg(As) dm-3”
Claim · model-written summary
As decreased chlorophyll, carotenoid and protein contents.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“It also decreased the Chl, carotenoid (Car) and protein contents.”
e1“The applied As”
Claim · model-written summary
The variable to maximum fluorescence ratio decreased, indicating lower photosynthetic efficiency.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“A decrease in the variable to maximum fluorescence ratio (Fv/Fm) indicated lower photosynthetic efficiency.”
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