Abstract
A hypdoponic experiment was conducted to assess the role of ascorbic acid in alleviation of the adverse effects of salt stress on growth of two wheat cultivars, S-24 (salt tolerant) and MH-97 (moderately salt sensitive). Seven-day old plants were subjected to normal or saline conditions (0 and 150 mM) for four weeks. Ascorbic acid was exogenously applied as foliar spray with varying levels (0, 50, 100 mg L -1) in hydroponics. Salt stress severely reduced growth of both wheat cultivars. Foliar spray with AsA improved the growth of non-stressed plants of both cultivars, but did not alleviate the adverse effects of salt stress on plants. However, salt-induced reduction in leaf chlorophyll 'a' was improved with AsA application. Salt-induced enhanced activities of all antioxidant enzymes were not substantially changed with AsA application. However, AsA application enhanced the Na + accumulation in the leaves of salt stressed plants of both cultivars, but it did not change the K + accumulation in the leaves and roots of the salt stressed plants of both cultivars. Furthermore, AsA applied as a foliar spray did not induce substantial changes and hence salt tolerance of both wheat cultivars. Thus, it can be concluded that though foliar spray with applied ascorbic acid protected the photosynthetic machinery from the damaging effects of salt stress, it did not improve growth of the two wheat cultivars under saline conditions.
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Claims 10
Claim · model-written summary
Salt stress severely reduced growth of both wheat cultivars.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress severely reduced growth of both wheat cultivars”
e1“two wheat cultivars, S-24 (salt tolerant) and MH-97 (moderately salt sensitive)”
Claim · model-written summary
Salt stress severely reduced growth of MH-97 wheat.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress severely reduced growth of both wheat cultivars”
e1“two wheat cultivars, S-24 (salt tolerant) and MH-97 (moderately salt sensitive)”
Claim · model-written summary
Foliar AsA improved growth of non-stressed S-24 plants.
- Taxon
- wheat
Triticum aestivumt0 - Material
- S-24e1
- Treatment
- Foliar spray with AsAe0
- Outcome
- growth of non-stressed plantse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“Foliar spray with AsA improved the growth of non-stressed plants of both cultivars”
e1“two wheat cultivars, S-24 (salt tolerant) and MH-97 (moderately salt sensitive)”
Claim · model-written summary
Foliar AsA improved growth of non-stressed MH-97 plants.
- Taxon
- wheatTriticum aestivumt0
- Material
- MH-97e1
- Treatment
- Foliar spray with AsAe0
- Outcome
- growth of non-stressed plantse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“Foliar spray with AsA improved the growth of non-stressed plants of both cultivars”
e1“two wheat cultivars, S-24 (salt tolerant) and MH-97 (moderately salt sensitive)”
Claim · model-written summary
Foliar AsA did not alleviate salt-related growth damage.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- AsAe1
- Outcome
- adverse effects of salt stress on plantse0
- Direction
- did not alleviatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“but did not alleviate the adverse effects of salt stress on plants”
e1“Foliar spray with AsA improved the growth of non-stressed plants of both cultivars”
Claim · model-written summary
AsA improved salt-induced reduction in leaf chlorophyll a.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- leafe0
- Treatment
- AsA applicatione0
- Outcome
- leaf chlorophyll 'a'e0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“salt-induced reduction in leaf chlorophyll 'a' was improved with AsA application”
Claim · model-written summary
AsA did not substantially change the salt-enhanced antioxidant enzyme activities.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- AsA applicatione0
- Outcome
- activities of all antioxidant enzymese0
- Direction
- not substantially changede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“Salt-induced enhanced activities of all antioxidant enzymes were not substantially changed with AsA application”
Claim · model-written summary
AsA enhanced leaf sodium accumulation in salt-stressed wheat.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- leavese0
- Treatment
- AsA applicatione0
- Outcome
- Na + accumulation in the leavese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“AsA application enhanced the Na + accumulation in the leaves of salt stressed plants of both cultivars”
Claim · model-written summary
AsA did not change potassium accumulation in leaves and roots of salt-stressed wheat.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- leaves and rootse0
- Treatment
- AsAe1
- Outcome
- K + accumulation in the leaves and rootse0
- Direction
- did not changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“it did not change the K + accumulation in the leaves and roots of the salt stressed plants of both cultivars”
e1“AsA application enhanced the Na + accumulation in the leaves of salt stressed plants of both cultivars”
Claim · model-written summary
Foliar AsA did not substantially improve salt tolerance in either wheat cultivar.
- Taxon
- wheatTriticum aestivume0
- Treatment
- AsA applied as a foliar spraye0
- Outcome
- salt tolerance of both wheat cultivarse0
- Direction
- did not induce substantial changese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“AsA applied as a foliar spray did not induce substantial changes and hence salt tolerance of both wheat cultivars”
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