Abstract
Salinity stress occurs due to the accumulation of high levels of salts in soil, which ultimately leads to the impairment of plant growth and crop loss. Stress tolerance-inducing compounds have a remarkable ability to improve growth and minimize the effects of salinity stress without negatively affecting the environment by controlling the physiological and molecular activities in plants. Two pot experiments were carried out in 2017 and 2018 to study the influence of salicylic acid (1 mM), yeast extract (6 g L−1), and proline (10 mM) on the physiological and biochemical parameters of sweet pepper plants under saline conditions (2000 and 4000 ppm). The results showed that salt stress led to decreasing the chlorophyll content, relative water content, and fruit yields, whereas electrolyte leakage, malondialdehyde (MDA), proline concentration, reactive oxygen species (ROS), and the activities of antioxidant enzymes increased in salt-stressed plants. The application of salicylic acid (1 mM), yeast extract (6 g L−1), and proline (10 mM) markedly improved the physiological characteristics and fruit yields of salt-stressed plants compared with untreated stressed plants. A significant reduction in electrolyte leakage, MDA, and ROS was also recorded for all treatments. In conclusion, our results reveal the important role of proline, SA, and yeast extracts in enhancing sweet pepper growth and tolerance to salinity stress via modulation of the physiological parameters and antioxidants machinery. Interestingly, proline proved to be the best treatment.
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Claims 8
Claim · model-written summary
Salt stress decreased chlorophyll content, relative water content and fruit yields of sweet pepper.
- Taxon
- Sweet Pepper
Capsicum annuumt0 - Treatment
- salt stresse2
- Outcome
- chlorophyll content, relative water content, and fruit yieldse2
- Direction
- decreasinge2
- Setting
- pot experimentse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper”
e1“Two pot experiments were carried out in 2017 and 2018”
e2“salt stress led to decreasing the chlorophyll content, relative water content, and fruit yields, whereas electrolyte leakage, malondialdehyde (MDA), proline concentration, reactive oxygen species (ROS), and the activities of antioxidant enzymes increased in salt-stressed plants”
Claim · model-written summary
Salt stress increased electrolyte leakage, malondialdehyde and proline concentration in sweet pepper.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- salt stresse2
- Outcome
- electrolyte leakage, malondialdehyde (MDA), proline concentratione2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper”
e2“salt stress led to decreasing the chlorophyll content, relative water content, and fruit yields, whereas electrolyte leakage, malondialdehyde (MDA), proline concentration, reactive oxygen species (ROS), and the activities of antioxidant enzymes increased in salt-stressed plants”
Claim · model-written summary
Salt stress increased reactive oxygen species and antioxidant enzyme activities in sweet pepper.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- salt stresse2
- Outcome
- reactive oxygen species (ROS), and the activities of antioxidant enzymese2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper”
e2“salt stress led to decreasing the chlorophyll content, relative water content, and fruit yields, whereas electrolyte leakage, malondialdehyde (MDA), proline concentration, reactive oxygen species (ROS), and the activities of antioxidant enzymes increased in salt-stressed plants”
Claim · model-written summary
Salicylic acid (1 mM) improved physiological characteristics and fruit yields of salt-stressed sweet pepper compared with untreated stressed plants.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- salicylic acid (1 mM)e5
- Outcome
- physiological characteristics and fruit yieldse5
- Direction
- improvede5
- Comparator
- untreated stressed plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper”
e5“The application of salicylic acid (1 mM), yeast extract (6 g L−1), and proline (10 mM) markedly improved the physiological characteristics and fruit yields of salt-stressed plants compared with untreated stressed plants”
Claim · model-written summary
Yeast extract (6 g L−1) improved physiological characteristics and fruit yields of salt-stressed sweet pepper compared with untreated stressed plants.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- yeast extract (6 g L−1)e5
- Outcome
- physiological characteristics and fruit yieldse5
- Direction
- improvede5
- Comparator
- untreated stressed plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper”
e5“The application of salicylic acid (1 mM), yeast extract (6 g L−1), and proline (10 mM) markedly improved the physiological characteristics and fruit yields of salt-stressed plants compared with untreated stressed plants”
Claim · model-written summary
Proline (10 mM) improved physiological characteristics and fruit yields of salt-stressed sweet pepper compared with untreated stressed plants.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- proline (10 mM)e5
- Outcome
- physiological characteristics and fruit yieldse5
- Direction
- improvede5
- Comparator
- untreated stressed plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper”
e5“The application of salicylic acid (1 mM), yeast extract (6 g L−1), and proline (10 mM) markedly improved the physiological characteristics and fruit yields of salt-stressed plants compared with untreated stressed plants”
Claim · model-written summary
Salicylic acid, yeast extract and proline all significantly reduced electrolyte leakage, MDA and ROS in salt-stressed sweet pepper.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- all treatmentse7
- Outcome
- electrolyte leakage, MDA, and ROSe7
- Direction
- reductione7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper”
e7“A significant reduction in electrolyte leakage, MDA, and ROS was also recorded for all treatments”
Claim · model-written summary
Proline was the best treatment for salt-stressed sweet pepper.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- prolinee7
- Outcome
- best treatmente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper”
e7“Interestingly, proline proved to be the best treatment”
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See all 13 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.