Abstract
Salt stress is one of the major global problems for crop productivity in the arid and semi-arid regions of the world. In this study, variations in some physiological parameters, water relations, and antioxidant systems under salinity (300 mM NaCl) among three maize (Zea mays L.) genotypes (‘P3167’, ‘32K61’, and ‘Bora’) were investigated. Our result indicated that shoot growth is more sensitive to salinity as compared to root growth. Salt stress led to physiological drought in all maize genotypes as indicated by the significant decrease in relative water content and increase in water deficit index. Salt stress increased SOD activity in all genotypes showing an efficient formation and detoxification of superoxide radical. The constant level of oxidative markers (MDA and H2O2) and the increased level of the reduced ascorbate and phenolic may indicate that non-enzymatic antioxidants are responsible for the elimination of oxidative stress. Changes in ascorbate peroxidase and glutathione reductase activities under salinity demonstrated a functional failure in the ascorbate-glutathione cycle, especially in ‘P3167’ and ‘32K61’. Based on the presented results we may conclude that the genotype ‘Bora’ is tolerant to salinity while ‘P3167’ and ‘32K61’ are sensitive.
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Claims 8
Claim · model-written summary
Maize shoot growth was more sensitive to salinity than root growth.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoot growth is more sensitive to salinity as compared to root growth.”
t0“maize”
Claim · model-written summary
Salt stress decreased relative water content and increased water deficit index in all genotypes.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress led to physiological drought in all maize genotypes as indicated by the significant decrease in relative water content and increase in water deficit index.”
Claim · model-written summary
Salt stress increased water deficit index in all maize genotypes.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress led to physiological drought in all maize genotypes as indicated by the significant decrease in relative water content and increase in water deficit index.”
Claim · model-written summary
Salt stress increased SOD activity across genotypes.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress increased SOD activity in all genotypes”
t0“maize”
Claim · model-written summary
Oxidative markers MDA and H2O2 remained constant under salinity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The constant level of oxidative markers (MDA and H2O2) and the increased level of the reduced ascorbate and phenolic”
t0“maize”
Claim · model-written summary
Reduced ascorbate and phenolic levels increased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increased level of the reduced ascorbate and phenolic”
t0“maize”
Claim · model-written summary
Salinity altered ascorbate peroxidase and glutathione reductase activities, particularly in P3167 and 32K61.
- Material
- ‘P3167’ and ‘32K61’e0
- Treatment
- salinitye0
- Outcome
- ascorbate peroxidase and glutathione reductase activitiese0
- Direction
- Changese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Changes in ascorbate peroxidase and glutathione reductase activities under salinity demonstrated a functional failure in the ascorbate-glutathione cycle, especially in ‘P3167’ and ‘32K61’.”
t0“maize”
Claim · model-written summary
Bora was judged salinity tolerant, whereas P3167 and 32K61 were sensitive.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the genotype ‘Bora’ is tolerant to salinity while ‘P3167’ and ‘32K61’ are sensitive.”
t0“maize”
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See all 42 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.