Abstract
Heavy metal contamination in soil has become a serious problem, and cadmium (Cd) in particular is of increasing global concern due to its readily taken up by plants. The selection of plant genotypes with low Cd uptake in roots and its transport to edible parts is a realistic approach to alleviate adverse effects of Cd contamination. In view of these considerations, series of experiments were performed to identify the genotypic difference in physiological and biochemical characteristics of soybean genotypes by applying different Cd concentrations. Twenty three soybean genotypes were grown at 0 and 2.0 μmol L -1 Cd in nutrient solution to compare the difference in Cd tolerance. Biometric, physiological and biochemical parameters revealed better performance for S951-3 and high sensitivity of Q17-3 to Cd toxicity. S951-3 and Q17-3 were used in the succeeding experiment to investigate the mechanisms of Cd tolerance in soybean. The Cd (5.0 μmol L -1 ) reduced growth, chlorophyll content and photosynthetic rate in both genotypes, but the extent of reduction was different. Cadmium, MDA contents, and activity of antioxidant enzymes were significantly increased with Cd treatment, being higher in Q17-3. These data suggest S951-3 as more resistant genotype than Q17-3 to Cd stress. © 2014 Friends Science Publishers
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Claims 6
Claim · model-written summary
S951-3 performed better than Q17-3 under Cd exposure.
- Taxon
- soybean
Glycine maxt0 - Material
- S951-3e0
- Outcome
- better performancee0
- Direction
- bettere0
- Comparator
- Q17-3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biometric, physiological and biochemical parameters revealed better performance for S951-3 and high sensitivity of Q17-3 to Cd toxicity.”
t0“soybean genotypes”
Claim · model-written summary
Q17-3 was highly sensitive to Cd toxicity.
- Taxon
- soybeanGlycine maxt0
- Material
- Q17-3e0
- Outcome
- high sensitivitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high sensitivity of Q17-3 to Cd toxicity”
t0“soybean genotypes”
Claim · model-written summary
Cd at 5.0 μmol L -1 reduced growth, chlorophyll content and photosynthetic rate in both genotypes.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Cd (5.0 μmol L -1 )e0
- Outcome
- growth, chlorophyll content and photosynthetic ratee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Cd (5.0 μmol L -1 ) reduced growth, chlorophyll content and photosynthetic rate in both genotypes”
t0“soybean genotypes”
Claim · model-written summary
Cd treatment significantly increased cadmium and MDA contents and antioxidant enzyme activity.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Cd treatmente0
- Outcome
- Cadmium, MDA contents, and activity of antioxidant enzymese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cadmium, MDA contents, and activity of antioxidant enzymes were significantly increased with Cd treatment”
t0“soybean genotypes”
Claim · model-written summary
These contents and enzyme activity were higher in Q17-3.
- Taxon
- soybeanGlycine maxt0
- Material
- Q17-3e0
- Outcome
- Cadmium, MDA contents, and activity of antioxidant enzymese0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cadmium, MDA contents, and activity of antioxidant enzymes were significantly increased with Cd treatment, being higher in Q17-3.”
t0“soybean genotypes”
Claim · model-written summary
The authors identified S951-3 as more Cd resistant than Q17-3.
- Taxon
- soybeanGlycine maxt0
- Material
- S951-3e0
- Outcome
- more resistant genotypee0
- Direction
- more resistante0
- Comparator
- Q17-3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These data suggest S951-3 as more resistant genotype than Q17-3 to Cd stress.”
t0“soybean genotypes”
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