Paper · 2021 · Saudi Journal of Biological Sciences

Foliar application of ascorbic acid enhances salinity stress tolerance in barley (Hordeum vulgare L.) through modulation of morpho-physio-biochemical attributes, ions uptake, osmo-protectants and stress response genes expression

Amara Hassan; Syeda Fasiha Amjad; Muhammad Hamzah Saleem; et al.

11
claims
22
verbatim quotes
148
citations
1
research areas
✓
Open access · cc-by

Abstract

Barley (Hordeum vulgare L.) is a major cereal grain and is known as a halophyte (a halophyte is a salt-tolerant plant that grows in soil or waters of high salinity). We therefore conducted a pot experiment to explore plant growth and biomass, photosynthetic pigments, gas exchange attributes, stomatal properties, oxidative stress and antioxidant response and their associated gene expression and absorption of ions in H. Vulgare. The soil used for this analysis was artificially spiked at different salinity concentrations (0, 50, 100 and 150 mM) and different levels of ascorbic acid (AsA) were supplied to plants (0, 30 and 60 mM) shortly after germination of the seed. The results of the present study showed that plant growth and biomass, photosynthetic pigments, gas exchange parameters, stomatal properties and ion uptake were significantly (p < 0.05) reduced by salinity stress, whereas oxidative stress was induced in plants by generating the concentration of reactive oxygen species (ROS) in plant cells/tissues compared to plants grown in the control treatment. Initially, the activity of antioxidant enzymes and relative gene expression increased to a saline level of 100 mM, and then decreased significantly (P < 0.05) by increasing the saline level (150 mM) in the soil compared to plants grown at 0 mM of salinity. We also elucidated that negative impact of salt stress in H. vulgare plants can overcome by the exogenous application of AsA, which not only increased morpho-physiological traits but decreased oxidative stress in the plants by increasing activities of enzymatic antioxidants. We have also explained the negative effect of salt stress on H. vulgare can decrease by exogenous application of AsA, which not only improved morpho-physiological characteristics, ions accumulation in the roots and shoots of the plants, but decreased oxidative stress in plants by increasing antioxidant compounds (enzymatic and non-enzymatic). Taken together, recognizing AsA's role in nutrient uptake introduces new possibilities for agricultural use of this compound and provides a valuable basis for improving plant tolerance and adaptability to potential salinity stress adjustment.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 11

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Salinity significantly reduced barley growth and biomass.

Treatment
salinity stresse0
Outcome
plant growth and biomasse0
Direction
reducede0
Comparator
control treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The results of the present study showed that plant growth and biomass, photosynthetic pigments, gas exchange parameters, stomatal properties and ion uptake were significantly (p < 0.05) reduced by salinity stress, whereas oxidative stress was induced in plants by generating the concentration of reactive oxygen species (ROS) in plant cells/tissues compared to plants grown in the control treatment.”

✓ located verbatim in the source · abstract, characters 673–1072 · show in text ↑
t0

“Barley (Hordeum vulgare L.)”

✓ located verbatim in the source · abstract, characters 0–27 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Salinity significantly reduced barley photosynthetic pigments and gas exchange parameters.

Treatment
salinity stresse0
Outcome
photosynthetic pigments, gas exchange parameterse0
Direction
reducede0
Comparator
control treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The results of the present study showed that plant growth and biomass, photosynthetic pigments, gas exchange parameters, stomatal properties and ion uptake were significantly (p < 0.05) reduced by salinity stress, whereas oxidative stress was induced in plants by generating the concentration of reactive oxygen species (ROS) in plant cells/tissues compared to plants grown in the control treatment.”

✓ located verbatim in the source · abstract, characters 673–1072 · show in text ↑
t0

“Barley (Hordeum vulgare L.)”

✓ located verbatim in the source · abstract, characters 0–27 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Salinity significantly reduced barley stomatal properties and ion uptake.

Treatment
salinity stresse0
Outcome
stomatal properties and ion uptakee0
Direction
reducede0
Comparator
control treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The results of the present study showed that plant growth and biomass, photosynthetic pigments, gas exchange parameters, stomatal properties and ion uptake were significantly (p < 0.05) reduced by salinity stress, whereas oxidative stress was induced in plants by generating the concentration of reactive oxygen species (ROS) in plant cells/tissues compared to plants grown in the control treatment.”

✓ located verbatim in the source · abstract, characters 673–1072 · show in text ↑
t0

“Barley (Hordeum vulgare L.)”

✓ located verbatim in the source · abstract, characters 0–27 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salinity increased oxidative stress and reactive oxygen species relative to controls.

Treatment
salinity stresse0
Outcome
oxidative stresse0
Direction
inducede0
Qualifier
reactive oxygen species (ROS)e0
Comparator
control treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The results of the present study showed that plant growth and biomass, photosynthetic pigments, gas exchange parameters, stomatal properties and ion uptake were significantly (p < 0.05) reduced by salinity stress, whereas oxidative stress was induced in plants by generating the concentration of reactive oxygen species (ROS) in plant cells/tissues compared to plants grown in the control treatment.”

✓ located verbatim in the source · abstract, characters 673–1072 · show in text ↑
t0

“Barley (Hordeum vulgare L.)”

✓ located verbatim in the source · abstract, characters 0–27 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Antioxidant enzyme activity and relative gene expression increased through 100 mM salinity.

Treatment
saline level of 100 mMe0
Outcome
activity of antioxidant enzymes and relative gene expressione0
Direction
increasede0
Comparator
0 mM of salinitye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Initially, the activity of antioxidant enzymes and relative gene expression increased to a saline level of 100 mM, and then decreased significantly (P < 0.05) by increasing the saline level (150 mM) in the soil compared to plants grown at 0 mM of salinity.”

✓ located verbatim in the source · abstract, characters 1073–1329 · show in text ↑
t0

“Barley (Hordeum vulgare L.)”

✓ located verbatim in the source · abstract, characters 0–27 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

At 150 mM salinity, antioxidant enzyme activity and relative gene expression decreased significantly relative to zero salinity.

Treatment
saline level (150 mM)e0
Outcome
activity of antioxidant enzymes and relative gene expressione0
Direction
decreasede0
Comparator
0 mM of salinitye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Initially, the activity of antioxidant enzymes and relative gene expression increased to a saline level of 100 mM, and then decreased significantly (P < 0.05) by increasing the saline level (150 mM) in the soil compared to plants grown at 0 mM of salinity.”

✓ located verbatim in the source · abstract, characters 1073–1329 · show in text ↑
t0

“Barley (Hordeum vulgare L.)”

✓ located verbatim in the source · abstract, characters 0–27 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ascorbic acid increased barley morpho-physiological traits under salt stress.

Treatment
exogenous application of AsAe0
Outcome
morpho-physiological traitse0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“We also elucidated that negative impact of salt stress in H. vulgare plants can overcome by the exogenous application of AsA, which not only increased morpho-physiological traits but decreased oxidative stress in the plants by increasing activities of enzymatic antioxidants.”

✓ located verbatim in the source · abstract, characters 1330–1605 · show in text ↑
t0

“Barley (Hordeum vulgare L.)”

✓ located verbatim in the source · abstract, characters 0–27 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ascorbic acid decreased barley oxidative stress under salt stress.

Treatment
exogenous application of AsAe0
Outcome
oxidative stresse0
Direction
decreasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“We also elucidated that negative impact of salt stress in H. vulgare plants can overcome by the exogenous application of AsA, which not only increased morpho-physiological traits but decreased oxidative stress in the plants by increasing activities of enzymatic antioxidants.”

✓ located verbatim in the source · abstract, characters 1330–1605 · show in text ↑
t0

“Barley (Hordeum vulgare L.)”

✓ located verbatim in the source · abstract, characters 0–27 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ascorbic acid increased enzymatic antioxidant activities under salt stress.

Treatment
exogenous application of AsAe0
Outcome
activities of enzymatic antioxidantse0
Direction
increasinge0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“We also elucidated that negative impact of salt stress in H. vulgare plants can overcome by the exogenous application of AsA, which not only increased morpho-physiological traits but decreased oxidative stress in the plants by increasing activities of enzymatic antioxidants.”

✓ located verbatim in the source · abstract, characters 1330–1605 · show in text ↑
t0

“Barley (Hordeum vulgare L.)”

✓ located verbatim in the source · abstract, characters 0–27 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ascorbic acid improved ion accumulation in barley roots and shoots under salt stress.

Treatment
exogenous application of AsAe0
Outcome
ions accumulation in the roots and shootse0
Direction
improvede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“We have also explained the negative effect of salt stress on H. vulgare can decrease by exogenous application of AsA, which not only improved morpho-physiological characteristics, ions accumulation in the roots and shoots of the plants, but decreased oxidative stress in plants by increasing antioxidant compounds (enzymatic and non-enzymatic).”

✓ located verbatim in the source · abstract, characters 1606–1950 · show in text ↑
t0

“Barley (Hordeum vulgare L.)”

✓ located verbatim in the source · abstract, characters 0–27 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ascorbic acid increased antioxidant compounds under salt stress.

Treatment
exogenous application of AsAe0
Outcome
antioxidant compounds (enzymatic and non-enzymatic)e0
Direction
increasinge0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“We have also explained the negative effect of salt stress on H. vulgare can decrease by exogenous application of AsA, which not only improved morpho-physiological characteristics, ions accumulation in the roots and shoots of the plants, but decreased oxidative stress in plants by increasing antioxidant compounds (enzymatic and non-enzymatic).”

✓ located verbatim in the source · abstract, characters 1606–1950 · show in text ↑
t0

“Barley (Hordeum vulgare L.)”

✓ located verbatim in the source · abstract, characters 0–27 · show in text ↑

L-ascorbic acid · physiology: oxidative · Hordeum vulgare (barley)Results differ

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

L-ascorbic acid · physiology: enzyme activity · Hordeum vulgare (barley)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

salinity · physiology: oxidative · Hordeum vulgare (barley)Positive and negative results

18 papers: 1 positive, 17 negative or no effect

16 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. negative
  3. negative

14 papers more in this group

See all 18 papers →

salinity · physiology: ion balance · Hordeum vulgare (barley)Positive and negative results

20 papers: 4 positive, 16 negative or no effect

15 papers in the same direction as this paper · 4 in the opposite direction

  1. positive
  2. negative
  3. positive

16 papers more in this group

See all 20 papers →

salinity · molecular: expression · Hordeum vulgare (barley)Positive and negative results

21 papers: 11 positive, 10 negative or no effect

9 papers in the same direction as this paper · 11 in the opposite direction

  1. positive
  2. positive
  3. positive

17 papers more in this group

See all 21 papers →

salinity · physiology: photosynthesis · Hordeum vulgare (barley)Positive and negative results

25 papers: 3 positive, 22 negative or no effect

21 papers in the same direction as this paper · 3 in the opposite direction

  1. positive
  2. positive
  3. positive

21 papers more in this group

See all 25 papers →

salinity · growth · Hordeum vulgare (barley)Positive and negative results

103 papers: 14 positive, 89 negative or no effect

88 papers in the same direction as this paper · 14 in the opposite direction

  1. positive
  2. positive
  3. positive

99 papers more in this group

See all 103 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.