Abstract
Plant growth is the result of many integrated and regulated physiological processes. Salinity, which is one of the major abiotic stresses, causes alterations in a wide range of physiological, biochemical and molecular processes in plants. Therefore, a factorial pot experiment was conducted based on randomized complete blocks design in green house condition to investigate the effect of salt stress on photosynthesis, leaf carbohydrate concentration and daytime leaf carbon budget of two wheat cultivars (CR and Ghods) over photoperiod. Plants were exposed to 0, 50, 150 and 250 mM salinity (NaCl and CaCl2 in 5:1 molar ratio) for 60 days. Measurements were done on fully youngest expanded leaves. Salinity caused a significant reduction in leaf net photosynthesis consequently total carbon fixed in both cultivars. Plants grown at low (50 mM) and high (250 mM) levels of salinity had net photosynthesis rates of 78.9 and 20.6% respectively compared to the control. However, salt stress significantly increased soluble carbohydrate concentration in both cultivars from 50 mM in the control to 150 mM at highest salt treatment. Starch concentration of leaves also increased with increasing salinity. As salinity had inverse effect on photosynthesis process, the total carbon fixed decreased with increasing salinity. At control condition the total carbon fixed by leaves of cultivars CR and Ghods were 255.2 and 225.3 mmol C m-2 leaf respectively, while at high level salt concentration (250 mM) only 95.4 (CR) and 63.1 (Ghods) mmol C m-2 fixed. Daytime amount of carbon translocated from leaf was reduced by salinity. However, CR exported greater amount of carbon from leaf than Ghods.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Salinity significantly reduced wheat leaf net photosynthesis and total fixed carbon.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- Salinitye0
- Outcome
- leaf net photosynthesis consequently total carbon fixede0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity caused a significant reduction in leaf net photosynthesis consequently total carbon fixed in both cultivars”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
At 50 mM salinity, photosynthesis was 78.9% of control.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- 50 mMe0
- Outcome
- net photosynthesis ratese0
- Value
- 78.9e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low (50 mM) and high (250 mM) levels of salinity had net photosynthesis rates of 78.9 and 20.6% respectively compared to the control”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
At 250 mM salinity, photosynthesis was 20.6% of control.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- 250 mMe0
- Outcome
- net photosynthesis ratese0
- Value
- 20.6%e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high (250 mM) levels of salinity had net photosynthesis rates of 78.9 and 20.6% respectively compared to the control”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
Salt stress significantly increased soluble leaf carbohydrate concentration in both cultivars.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- salt stresse0
- Outcome
- soluble carbohydrate concentratione0
- Direction
- increasede0
- Value
- 150 mMe0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt stress significantly increased soluble carbohydrate concentration in both cultivars from 50 mM in the control to 150 mM at highest salt treatment”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
Leaf starch concentration rose with salinity.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- increasing salinitye0
- Outcome
- Starch concentration of leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Starch concentration of leaves also increased with increasing salinity”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
Total fixed carbon fell as salinity increased.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- increasing salinitye0
- Outcome
- total carbon fixede0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total carbon fixed decreased with increasing salinity”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
At control conditions, CR fixed 255.2 mmol C m-2 leaf.
- Taxon
- WheatTriticum aestivumt0
- Material
- CRe0
- Outcome
- total carbon fixed by leavese0
- Value
- 255.2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At control condition the total carbon fixed by leaves of cultivars CR and Ghods were 255.2 and 225.3 mmol C m-2 leaf respectively”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
At control conditions, Ghods fixed 225.3 mmol C m-2 leaf.
- Taxon
- WheatTriticum aestivumt0
- Material
- Ghodse0
- Outcome
- total carbon fixed by leavese0
- Value
- 225.3 mmol C m-2 leafe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At control condition the total carbon fixed by leaves of cultivars CR and Ghods were 255.2 and 225.3 mmol C m-2 leaf respectively”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
At 250 mM salt, CR fixed 95.4 mmol C m-2.
- Taxon
- WheatTriticum aestivumt0
- Material
- CRe0
- Treatment
- 250 mMe0
- Outcome
- total carbon fixede1
- Direction
- onlye0
- Value
- 95.4e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at high level salt concentration (250 mM) only 95.4 (CR) and 63.1 (Ghods) mmol C m-2 fixed”
e1“total carbon fixed by leaves of cultivars CR and Ghods”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
At 250 mM salt, Ghods fixed 63.1 mmol C m-2.
- Taxon
- WheatTriticum aestivumt0
- Material
- Ghodse0
- Treatment
- 250 mMe0
- Outcome
- total carbon fixede1
- Direction
- onlye0
- Value
- 63.1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at high level salt concentration (250 mM) only 95.4 (CR) and 63.1 (Ghods) mmol C m-2 fixed”
e1“total carbon fixed by leaves of cultivars CR and Ghods”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
Salinity reduced daytime leaf carbon export.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- salinitye0
- Outcome
- carbon translocated from leafe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Daytime amount of carbon translocated from leaf was reduced by salinity”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
CR exported more leaf carbon than Ghods.
- Taxon
- WheatTriticum aestivumt0
- Material
- CRe0
- Outcome
- amount of carbon from leafe0
- Direction
- greatere0
- Comparator
- Ghodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CR exported greater amount of carbon from leaf than Ghods”
t0“Wheat (Triticum aestivum L.)”
The same questions in other papers
salinity · quality: sugar starch · Triticum aestivum (wheat)Positive and negative results
2 papers in the same direction as this paper · 13 in the opposite direction
- negative
- negative
- negative
12 papers more in this group
See all 16 papers →salinity · molecular: metabolites · Triticum aestivum (wheat)Positive and negative results
67 papers in the same direction as this paper · 19 in the opposite direction
- positive
- positive
- positive
83 papers more in this group
See all 87 papers →salinity · physiology: photosynthesis · Triticum aestivum (wheat)Positive and negative results
88 papers in the same direction as this paper · 11 in the opposite direction
- negative
- positive
- positive
96 papers more in this group
See all 100 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.