Abstract
Cadmium is known to hamper plant growth through disruption in structure, nutrition, water relations and metabolism in addition to oxidative stress induction. While, potassium has crucial role in the energy status of plants, translocation/storage of assimilates and tissue water relations. Further, it activates over 60 enzyme systems, aids in photosynthesis, regulates stomatal opening and nutrients translocation and enhances synthesis of starch and proteins. These physiological and biochemical aspects of potassium could also be having a remedial role in counteracting the detrimental effects of cadmium. However, such relationship has rarely been studied in detail. Therefore, the study in view was envisaged for exploiting potassium to counter-balance the cadmium toxicity in soybean. Emphasis was laid on growth, physiology and biochemistry of two soybean genotypes differing in cadmium response. Following treatments were employed under factorial design in hydroponics: Check (no cadmium or potassium applied); cadmium only; potassium only; cadmium + potassium. Cadmium reduced growth, chlorophyll content and fluorescence, photosynthesis and stomatal conductance markedly in both genotypes. Enhanced malondialdehyde (MDA) content, super oxide dismutase (SOD) and peroxidase (POD) activities were also detected in plants exposed to cadmium than those with potassium alone or combined with cadmium. The activities of SOD and POD were found higher in cv. Liao-1 than in cv. Zhechun3. Apparently, potassium and cadmium behaved antagonistically; suggesting that potassium could be a candidate for cadmium detoxification in crops cultivated under polluted environments.
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Claims 7
Claim · model-written summary
Cadmium markedly reduced soybean growth.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- Cadmiume0
- Outcome
- growthe0
- Direction
- reducede0
- Qualifier
- in both genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“Cadmium reduced growth, chlorophyll content and fluorescence, photosynthesis and stomatal conductance markedly in both genotypes”
Claim · model-written summary
Cadmium markedly reduced chlorophyll content and fluorescence.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Cadmiume0
- Outcome
- chlorophyll content and fluorescencee0
- Direction
- reducede0
- Qualifier
- in both genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“Cadmium reduced growth, chlorophyll content and fluorescence, photosynthesis and stomatal conductance markedly in both genotypes”
Claim · model-written summary
Cadmium markedly reduced photosynthesis and stomatal conductance.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Cadmiume0
- Outcome
- photosynthesis and stomatal conductancee0
- Direction
- reducede0
- Qualifier
- in both genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“Cadmium reduced growth, chlorophyll content and fluorescence, photosynthesis and stomatal conductance markedly in both genotypes”
Claim · model-written summary
Cadmium exposure raised malondialdehyde content relative to potassium alone or cadmium plus potassium.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- cadmiume0
- Outcome
- malondialdehyde (MDA) contente0
- Direction
- Enhancede0
- Comparator
- potassium alone or combined with cadmiume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“Enhanced malondialdehyde (MDA) content, super oxide dismutase (SOD) and peroxidase (POD) activities were also detected in plants exposed to cadmium than those with potassium alone or combined with cadmium”
Claim · model-written summary
Cadmium exposure raised super oxide dismutase and peroxidase activities relative to potassium alone or cadmium plus potassium.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- cadmiume0
- Outcome
- super oxide dismutase (SOD) and peroxidase (POD) activitiese0
- Direction
- Enhancede0
- Comparator
- potassium alone or combined with cadmiume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“Enhanced malondialdehyde (MDA) content, super oxide dismutase (SOD) and peroxidase (POD) activities were also detected in plants exposed to cadmium than those with potassium alone or combined with cadmium”
Claim · model-written summary
Super oxide dismutase and peroxidase activities were higher in Liao-1 than Zhechun3.
- Taxon
- SoybeanGlycine maxt0
- Material
- cv. Liao-1e0
- Outcome
- activities of SOD and PODe0
- Direction
- highere0
- Comparator
- cv. Zhechun3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“The activities of SOD and POD were found higher in cv. Liao-1 than in cv. Zhechun3”
Claim · model-written summary
The authors suggest potassium as a candidate for cadmium detoxification in polluted crop environments.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- potassiume0
- Outcome
- cadmium detoxificatione0
- Qualifier
- crops cultivated under polluted environmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“potassium could be a candidate for cadmium detoxification in crops cultivated under polluted environments”
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