Abstract
The effects of different concentrations (10, 50, 100 and 500 M) of cadmium (Cd) on manganese (Mn) and iron (Fe), lipid peroxidation, activities of antioxidant enzymes and photosynthetic function were investigated in hydroponically grown cucumber (Cucumis sativus L.). Results indicated that cadmium was accumulated primarily in roots. In the roots and shoots, the cadmium content increased with the increasing cadmium concentrations, and induced decrease of manganese significantly (P < 0.005). The levels of iron had an increasing trend with increasing cadmium concentration and duration of treatment. Cadmium-induced oxidation stress and lipid peroxidation in C. sativus showed by the increased concentration of MDA (malondialdehyde). Cadmium induced higher SOD (superoxide dismutase) and POD (peroxidase) activities than CAT (catalase) activity, suggesting that SOD and POD provided a better defence mechanism against cadmium-induced oxidative damage in C. sativus. The net photosynthetic rate, transpiration rate, stomatal conductance and intercellular CO 2 concentration were reduced in the presence of cadmium.
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Claims 9
Claim · model-written summary
Cadmium accumulated primarily in cucumber roots.
- Taxon
- cucumber
Cucumis sativust0 - Organ / stage
- rootse0
- Outcome
- cadmium was accumulated primarily in rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cadmium was accumulated primarily in roots”
t0“in cucumber”
Claim · model-written summary
Cadmium content in roots and shoots increased as applied cadmium concentration increased.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- roots and shootse0
- Treatment
- increasing cadmium concentrationse0
- Outcome
- cadmium contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the roots and shoots, the cadmium content increased with the increasing cadmium concentrations”
t0“in cucumber”
Claim · model-written summary
Increasing cadmium concentration significantly decreased manganese in cucumber roots and shoots.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- roots and shootse1
- Treatment
- cadmiumt0
- Outcome
- manganesee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“induced decrease of manganese significantly (P < 0.005)”
t0“Cadmium effects on mineral accumulation, antioxidant defence system and gas exchange in cucumber”
e1“In the roots and shoots, the cadmium content increased with the increasing cadmium concentrations”
Claim · model-written summary
Iron levels tended to increase with cadmium concentration and treatment duration.
- Taxon
- cucumberCucumis sativust0
- Treatment
- increasing cadmium concentration and duration of treatmente0
- Outcome
- levels of irone0
- Direction
- increasing trende0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The levels of iron had an increasing trend with increasing cadmium concentration and duration of treatment”
t0“in cucumber”
Claim · model-written summary
Cadmium increased MDA concentration, indicating oxidative stress and lipid peroxidation in cucumber.
- Taxon
- C. sativusCucumis sativuse0
- Treatment
- Cadmiume0
- Outcome
- concentration of MDA (malondialdehyde)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cadmium-induced oxidation stress and lipid peroxidation in C. sativus showed by the increased concentration of MDA (malondialdehyde)”
Claim · model-written summary
Cadmium induced higher SOD and POD activities than CAT activity.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Cadmiume0
- Gene
- SOD (superoxide dismutase) and POD (peroxidase)e0
- Outcome
- SOD (superoxide dismutase) and POD (peroxidase) activitiese0
- Direction
- highere0
- Comparator
- CAT (catalase) activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cadmium induced higher SOD (superoxide dismutase) and POD (peroxidase) activities than CAT (catalase) activity”
t0“in cucumber”
Claim · model-written summary
SOD and POD were interpreted as providing better defence against cadmium-induced oxidative damage than CAT.
- Taxon
- C. sativusCucumis sativuse0
- Gene
- SOD and PODe0
- Outcome
- defence mechanism against cadmium-induced oxidative damagee0
- Direction
- bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting that SOD and POD provided a better defence mechanism against cadmium-induced oxidative damage in C. sativus”
Claim · model-written summary
Cadmium reduced net photosynthetic rate, transpiration rate and stomatal conductance.
- Taxon
- cucumberCucumis sativust0
- Treatment
- cadmiume0
- Outcome
- net photosynthetic rate, transpiration rate, stomatal conductancee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The net photosynthetic rate, transpiration rate, stomatal conductance and intercellular CO 2 concentration were reduced in the presence of cadmium”
t0“in cucumber”
Claim · model-written summary
Cadmium reduced intercellular CO 2 concentration.
- Taxon
- cucumberCucumis sativust0
- Treatment
- cadmiume0
- Outcome
- intercellular CO 2 concentratione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intercellular CO 2 concentration were reduced in the presence of cadmium”
t0“in cucumber”
The same questions in other papers
cadmium atom · physiology: oxidative · Cucumis sativus (cucumber)Positive and negative results
8 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
10 papers more in this group
See all 14 papers →cadmium atom · physiology: photosynthesis · Cucumis sativus (cucumber)Results agree
4 papers in the same direction as this paper
- no effect
- negative
- negative
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.