Abstract
Salinity and lead are two important abiotic stresses that limit crop growth and yield. In this study, we assayed the effect of these stresses on tolerant and sensitive maize genotypes. Four-week-old maize plants were treated with 250 mM sodium chloride (NaCl) and 250 µM lead (Pb). Our results show that NaCl or Pb treatment of the sensitive genotype caused a significant reduction in the root length, plant height, total fresh and dry weights, as well as chlorophyll, and carotenoid content. Salt stress led to a significant decrease in the relative water content, shoot and root length, fresh and dry weight as well as leaf area and K + content but increase Na + content. Both NaCl and Pb stresses increased the antioxidant enzyme activity, proline content, malondialdehyde, and hydrogen peroxide levels. Principal component analysis (PCA) accounted for 69.8% and 16.5% of the total variation among all the variables studied. PCA also suggested a positive correlation between hydrogen peroxide, malondialdehyde, peroxidase, catalase, ascorbate peroxidase levels, and Na + content and a negative correlation between K + content, chlorophyll content, relative water content, leaf area, root length, plant height, and total fresh, and dry weights. Together, these results suggest that the salt-tolerant maize genotype is more suitable for adapting to Pb stress compared to the salt-sensitive genotype.
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Claims 15
Claim · model-written summary
NaCl or Pb treatment of the sensitive genotype significantly reduced root length and plant height.
- Material
- sensitive genotypee1
- Treatment
- NaCl or Pb treatmente1
- Outcome
- root length, plant heighte1
- Direction
- reductione1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“NaCl or Pb treatment of the sensitive genotype caused a significant reduction in the root length, plant height, total fresh and dry weights, as well as chlorophyll, and carotenoid content”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
NaCl or Pb treatment of the sensitive genotype significantly reduced total fresh and dry weights.
- Material
- sensitive genotypee1
- Treatment
- NaCl or Pb treatmente1
- Outcome
- total fresh and dry weightse1
- Direction
- reductione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“NaCl or Pb treatment of the sensitive genotype caused a significant reduction in the root length, plant height, total fresh and dry weights, as well as chlorophyll, and carotenoid content”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
NaCl or Pb treatment of the sensitive genotype significantly reduced chlorophyll and carotenoid content.
- Material
- sensitive genotypee1
- Treatment
- NaCl or Pb treatmente1
- Outcome
- chlorophyll, and carotenoid contente1
- Direction
- reductione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“NaCl or Pb treatment of the sensitive genotype caused a significant reduction in the root length, plant height, total fresh and dry weights, as well as chlorophyll, and carotenoid content”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
Salt stress significantly decreased relative water content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Salt stress led to a significant decrease in the relative water content, shoot and root length, fresh and dry weight as well as leaf area and K + content but increase Na + content”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
Salt stress significantly decreased shoot and root length.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Salt stress led to a significant decrease in the relative water content, shoot and root length, fresh and dry weight as well as leaf area and K + content but increase Na + content”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
Salt stress significantly decreased fresh and dry weight and leaf area.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Salt stress led to a significant decrease in the relative water content, shoot and root length, fresh and dry weight as well as leaf area and K + content but increase Na + content”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
Salt stress significantly decreased K+ content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Salt stress led to a significant decrease in the relative water content, shoot and root length, fresh and dry weight as well as leaf area and K + content but increase Na + content”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
Salt stress increased Na+ content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Salt stress led to a significant decrease in the relative water content, shoot and root length, fresh and dry weight as well as leaf area and K + content but increase Na + content”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
NaCl and Pb stresses increased antioxidant enzyme activity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Both NaCl and Pb stresses increased the antioxidant enzyme activity, proline content, malondialdehyde, and hydrogen peroxide levels”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
NaCl and Pb stresses increased proline content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Both NaCl and Pb stresses increased the antioxidant enzyme activity, proline content, malondialdehyde, and hydrogen peroxide levels”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
NaCl and Pb stresses increased malondialdehyde and hydrogen peroxide levels.
- Treatment
- NaCl and Pb stressese3
- Outcome
- malondialdehyde, and hydrogen peroxide levelse3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Both NaCl and Pb stresses increased the antioxidant enzyme activity, proline content, malondialdehyde, and hydrogen peroxide levels”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
Principal component analysis explained 69.8% and 16.5% of the total variation among the variables studied.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Principal component analysis (PCA) accounted for 69.8% and 16.5% of the total variation among all the variables studied”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
Hydrogen peroxide, malondialdehyde, peroxidase, catalase and ascorbate peroxidase levels were positively correlated with Na+ content.
- Compound
- hydrogen peroxidee5
- Outcome
- correlation between hydrogen peroxide, malondialdehyde, peroxidase, catalase, ascorbate peroxidase levels, and Na + contente5
- Direction
- positivee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“PCA also suggested a positive correlation between hydrogen peroxide, malondialdehyde, peroxidase, catalase, ascorbate peroxidase levels, and Na + content”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
K+, chlorophyll content and relative water content were negatively correlated with growth traits in maize.
- Compound
- K + contente6
- Outcome
- K + content, chlorophyll content, relative water contente6
- Direction
- negativee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“a negative correlation between K + content, chlorophyll content, relative water content, leaf area, root length, plant height, and total fresh, and dry weights”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
Claim · model-written summary
The salt-tolerant maize genotype is more suitable for adapting to Pb stress than the salt-sensitive genotype.
- Material
- salt-tolerant maize genotypee7
- Treatment
- Pb stresse7
- Outcome
- suitable for adapting to Pb stresse7
- Direction
- more suitablee7
- Comparator
- salt-sensitive genotypee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Together, these results suggest that the salt-tolerant maize genotype is more suitable for adapting to Pb stress compared to the salt-sensitive genotype”
t0“Comparative morphological, physiological, and biochemical traits in sensitive and tolerant maize genotypes in response to salinity and pb stress”
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