Abstract
Abstract Plant growth and nutrient uptake are adversely affected under salt stress conditions. This study was conducted to examine the effects of NaCl stress on growth of eggplant ( Solanum melongena L., cv. Syria), and 15 N uptake and distribution in plant shoots and roots. Absorption pattern of 15 N by eggplant from normal (−0.03 MPa osmotic potential) and NaCl salinized (−0.3 and −0.6 MPa osmotic potentials) nutrient solutions was investigated in a growth chamber. The 21‐d‐old seedlings were grown for 7 d in complete Hoagland solution before and 7 d after the completion of salt treatments. This was followed by 3‐d growth in minus N solution with respective salinity levels, and a 90‐d 15 N uptake period after 15 NH 4 15 NO 3 addition to nutrient solutions. Nutrient solutions were sampled at 5‐d intervals for 15 N disappearance from the pots (plant absorbed). Plant tissues were analyzed for distribution of 15 N in shoots and roots. Lowering the osmotic potential of culture solution decreased total N and 15 N uptake by plants at all salinity levels. Increasing salinity decreased dry matter production and water uptake to a greater extent than 15 N absorption. Nitrogen‐15 concentration was substantially higher in shoots and roots of salinized plants as compared with the controls at the 90‐d harvest. Only at the 30‐d harvest was 15 N concentration in shoots significantly higher than in roots at each salinity level. Any level of NaCl in the root medium appears to be detrimental to eggplant growth in terms of dry matter production as well as nitrogen (N and 15 N) and water uptake.
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Claims 4
Claim · model-written summary
Lowering the osmotic potential of the culture solution decreased total N and 15N uptake by eggplant at all salinity levels.
- Taxon
- eggplant
Solanum melongenae2 - Material
- cv. Syriae2
- Treatment
- Lowering the osmotic potential of culture solutione1
- Outcome
- total N and 15 N uptakee1
- Direction
- decreasede1
- Comparator
- normal (−0.03 MPa osmotic potential)e3
- Setting
- growth chambere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Lowering the osmotic potential of culture solution decreased total N and 15 N uptake by plants at all salinity levels”
e2“This study was conducted to examine the effects of NaCl stress on growth of eggplant ( Solanum melongena L., cv. Syria)”
e3“Absorption pattern of 15 N by eggplant from normal (−0.03 MPa osmotic potential) and NaCl salinized (−0.3 and −0.6 MPa osmotic potentials) nutrient solutions was investigated in a growth chamber”
Claim · model-written summary
Increasing salinity decreased dry matter production and water uptake of eggplant to a greater extent than 15N absorption.
- Taxon
- eggplantSolanum melongenae2
- Treatment
- Increasing salinitye4
- Outcome
- dry matter production and water uptakee4
- Direction
- decreasede4
- Comparator
- 15 N absorptione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“This study was conducted to examine the effects of NaCl stress on growth of eggplant ( Solanum melongena L., cv. Syria)”
e4“Increasing salinity decreased dry matter production and water uptake to a greater extent than 15 N absorption”
Claim · model-written summary
Nitrogen-15 concentration was higher in shoots and roots of salinized eggplant than in controls at the 90-day harvest.
- Taxon
- eggplantSolanum melongenae2
- Organ / stage
- shoots and rootse5
- Treatment
- salinized plantse5
- Outcome
- concentratione5
- Direction
- highere5
- Comparator
- controlse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“This study was conducted to examine the effects of NaCl stress on growth of eggplant ( Solanum melongena L., cv. Syria)”
e5“concentration was substantially higher in shoots and roots of salinized plants as compared with the controls”
Claim · model-written summary
Only at the 30-day harvest was 15N concentration in shoots significantly higher than in roots at each salinity level.
- Taxon
- eggplantSolanum melongenae2
- Organ / stage
- shootse6
- Treatment
- salinity levele6
- Outcome
- 15 N concentration in shootse6
- Direction
- highere6
- Comparator
- rootse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“This study was conducted to examine the effects of NaCl stress on growth of eggplant ( Solanum melongena L., cv. Syria)”
e6“was 15 N concentration in shoots significantly higher than in roots at each salinity level”
The same questions in other papers
salinity · physiology: water · Solanum melongena (eggplant)Positive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
3 papers more in this group
See all 7 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.