Abstract
tolerant Giza 2, were studied, namely their adaptation to NaCl imposition at cell and whole plant level. Changes in growth and mineral content of roots and shoots, glycinebetaine (GB) and free proline (Pro) levels of shoots, plasma membrane permeability and solute potential (øs) of leaf sheath subepidermal cells were measured. NaCl decreased fresh mass (FM), dry mass (DM), relative growth rate (RGR) of shoots and roots, and leaf area ratio (LAR) in both cultivars. Greater decrease (except LAR) was obtained in Giza 2 than in Trihybrid 321. NaCl stress resulted in accumulation of GB and free Pro in shoots of both cultivars. The magnitude of increase in both omsolytes was higher in Giza 2 than in Trihybrid 321. Salt stress induced Na + and Cl- accumulation while it decreased K + and Ca2+ levels in shoots and roots of both cultivars. The increase in Na + and the decrease in K + and Ca2+ was greater in Giza 2 than in Trihybrid 321. Cl- was increased more in Trihybrid 321 compared to Giza 2. NaCl increased plasma membrane permeability in both cultivars. Salt stress decreased cell øs in both cultivars, especially in Giza 2. It was concluded that Na + exclusion from the shoot was not correlated with salt tolerance and that Pro and GB accumulation in the shoot was a possible indicator for salt tolerance in the maize genotypes studied.
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Claims 13
Claim · model-written summary
NaCl reduced shoot and root fresh mass, dry mass, and relative growth rate and leaf area ratio in both cultivars.
- Taxon
- ZEA MAYS L.t0
- Treatment
- NaCle0
- Outcome
- fresh mass (FM), dry mass (DM), relative growth rate (RGR) of shoots and rootse0
- Direction
- decreasede0
Not reportedComparator
Verbatim
t0“ZEA MAYS L.”
e0“NaCl decreased fresh mass (FM), dry mass (DM), relative growth rate (RGR) of shoots and roots, and leaf area ratio (LAR) in both cultivars.”
Claim · model-written summary
NaCl reduced leaf area ratio in both cultivars.
Not reportedComparator
Verbatim
t0“ZEA MAYS L.”
e0“NaCl decreased fresh mass (FM), dry mass (DM), relative growth rate (RGR) of shoots and roots, and leaf area ratio (LAR) in both cultivars.”
Claim · model-written summary
NaCl growth declines other than leaf area ratio were greater in Giza 2 than Trihybrid 321.
Verbatim
t0“ZEA MAYS L.”
e0“Greater decrease (except LAR) was obtained in Giza 2 than in Trihybrid 321.”
Claim · model-written summary
NaCl increased shoot glycinebetaine and free proline in both cultivars.
Not reportedComparator
Verbatim
t0“ZEA MAYS L.”
e0“NaCl stress resulted in accumulation of GB and free Pro in shoots of both cultivars.”
Claim · model-written summary
Osmolyte increases were greater in Giza 2 than Trihybrid 321.
Verbatim
t0“ZEA MAYS L.”
e0“The magnitude of increase in both omsolytes was higher in Giza 2 than in Trihybrid 321.”
Claim · model-written summary
Salt stress increased sodium and chloride accumulation in shoots and roots.
- Taxon
- ZEA MAYS L.t0
- Organ / stage
- shoots and rootse0
- Treatment
- Salt stresse0
- Outcome
- Na + and Cl- accumulatione0
- Direction
- accumulatione0
Not reportedComparator
Verbatim
t0“ZEA MAYS L.”
e0“Salt stress induced Na + and Cl- accumulation while it decreased K + and Ca2+ levels in shoots and roots of both cultivars.”
Claim · model-written summary
Salt stress decreased potassium and calcium levels in shoots and roots.
- Taxon
- ZEA MAYS L.t0
- Organ / stage
- shoots and rootse0
- Treatment
- Salt stresse0
- Outcome
- K + and Ca2+ levelse0
- Direction
- decreasede0
Not reportedComparator
Verbatim
t0“ZEA MAYS L.”
e0“Salt stress induced Na + and Cl- accumulation while it decreased K + and Ca2+ levels in shoots and roots of both cultivars.”
Claim · model-written summary
Sodium increase and potassium and calcium decreases were greater in Giza 2 than Trihybrid 321.
Verbatim
t0“ZEA MAYS L.”
e0“The increase in Na + and the decrease in K + and Ca2+ was greater in Giza 2 than in Trihybrid 321.”
Claim · model-written summary
Chloride increased more in Trihybrid 321 than Giza 2.
Verbatim
t0“ZEA MAYS L.”
e0“Cl- was increased more in Trihybrid 321 compared to Giza 2.”
Claim · model-written summary
NaCl increased plasma membrane permeability in both cultivars.
Not reportedComparator
Verbatim
t0“ZEA MAYS L.”
e0“NaCl increased plasma membrane permeability in both cultivars.”
Claim · model-written summary
Salt stress decreased cell solute potential, especially in Giza 2.
Not reportedComparator
Verbatim
t0“ZEA MAYS L.”
e0“Salt stress decreased cell øs in both cultivars, especially in Giza 2.”
Claim · model-written summary
Shoot sodium exclusion was not correlated with salt tolerance.
Not reportedDirection
Verbatim
t0“ZEA MAYS L.”
e0“Na + exclusion from the shoot was not correlated with salt tolerance”
Claim · model-written summary
Shoot proline and glycinebetaine accumulation was suggested as an indicator of salt tolerance.
Zea maysNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ZEA MAYS L.”
e0“Pro and GB accumulation in the shoot was a possible indicator for salt tolerance in the maize genotypes studied.”
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