Abstract
The present study was conducted to assess whether exogenously applied SA as a foliar spray could ameliorate the adverse effects of salt stress on sunflower plants. Two lines of sunflower (Hisun-33 and SF-187) were grown under normal or saline (120 mM NaCl) conditions. Different levels of salicylic acid (0, 100, 200, 300 mg L -1 ) were applied as a foliar spray. Salt stress reduced the growth of both lines, but both cultivars were equally responsive to the stress. Application of 200 mg L -1 of SA caused an increase in biomass of both lines under non-saline or saline conditions. Photosynthetic rate of both cultivars increased due to SA applied foliarly both under control and saline conditions, particularly in line SF-187. Furthermore, increase in growth of both cultivars due to exogenously applied SA may have been due to changes in photosynthesis. However, SA applied as a foliar spray did not change the sub-stomatal CO2 suggesting that stomtal factors were not the major controlling factors for photosynthesis. Overall, the adverse effects of salt stress could be alleviated by exogenous application of SA.
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Claims 7
Claim · model-written summary
Salt stress reduced growth in both sunflower lines.
- Taxon
- sunflower
Helianthus annuuse1 - Treatment
- Salt stresse0
- Outcome
- growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress reduced the growth of both lines, but both cultivars were equally responsive to the stress.”
e1“sunflower plants”
Claim · model-written summary
Both sunflower cultivars responded equally to salt stress.
- Taxon
- sunflowerHelianthus annuuse1
- Outcome
- equally responsive to the stresse0
- Direction
- equallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both cultivars were equally responsive to the stress.”
e1“sunflower plants”
Claim · model-written summary
Foliar 200 mg L -1 SA increased biomass of both lines under non-saline or saline conditions.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- 200 mg L -1 of SAe0
- Outcome
- biomasse0
- Direction
- increasee0
- Qualifier
- under non-saline or saline conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 200 mg L -1 of SA caused an increase in biomass of both lines under non-saline or saline conditions.”
e1“sunflower plants”
Claim · model-written summary
Foliar SA increased photosynthetic rate in both sunflower cultivars, especially SF-187.
- Taxon
- sunflowerHelianthus annuuse1
- Material
- SF-187e0
- Treatment
- SA applied foliarlye0
- Outcome
- Photosynthetic ratee0
- Direction
- increasede0
- Qualifier
- both under control and saline conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthetic rate of both cultivars increased due to SA applied foliarly both under control and saline conditions, particularly in line SF-187.”
e1“sunflower plants”
Claim · model-written summary
Foliar SA did not change sub-stomatal CO2.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- SA applied as a foliar spraye0
- Outcome
- sub-stomatal CO2e0
- Direction
- did not changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA applied as a foliar spray did not change the sub-stomatal CO2”
e1“sunflower plants”
Claim · model-written summary
Authors suggest the SA growth response may be due to changes in photosynthesis.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- exogenously applied SAe0
- Outcome
- growthe0
- Qualifier
- changes in photosynthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase in growth of both cultivars due to exogenously applied SA may have been due to changes in photosynthesis.”
e1“sunflower plants”
Claim · model-written summary
Authors suggest stomatal factors were not the main controls of photosynthesis.
- Taxon
- sunflowerHelianthus annuuse1
- Outcome
- photosynthesise0
- Qualifier
- stomtal factorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting that stomtal factors were not the major controlling factors for photosynthesis.”
e1“sunflower plants”
The same questions in other papers
salicylic acid · growth · Helianthus annuus (common sunflower)Results differ
16 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- positive
15 papers more in this group
See all 19 papers →salicylic acid · physiology: photosynthesis · Helianthus annuus (common sunflower)Results agree
1 paper in the same direction as this paper
- positive
salinity · growth · Helianthus annuus (common sunflower)Results differ
46 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
49 papers more in this group
See all 53 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.