Paper · 2025 · Communications in Soil Science and Plant Analysis

Alleviating Drought Stress Tolerance in Sensitive Genotype of Wheat ( Triticum aestivum L.) Through Exogenous Application of Root Exudates

Om Parkash Ahlawat; Nisha Walia; Sonia Sheoran; et al.

10
claims
20
verbatim quotes
1
citations
2
research areas
—
Not open access

Abstract

Root exudates play pivotal roles in supporting plant growth and conferring abiotic stress tolerance to plants. However, reports on their role in drought stress tolerance in wheat are scanty. Citric acid, succinic acid, magnesium, and calcium were previously examined for their increased accumulation in the rhizosphere of drought-tolerant bread wheat (Triticum aestivum L.) genotypes, and their impact on drought stress tolerance in sensitive bread wheat genotype was studied in the current work. Under 15% polyethylene glycol induced water stress condition, succinic acid at 600 ppm, and citric acid (CA) and magnesium sulfate (MgSO4) each at 900 ppm, significantly enhanced the plant height, root length, and fresh and dry weight of plants after 40 days of sowing under controlled conditions. Under water limiting condition in pots, two-time application of CA at 1200 ppm affected majority of the physiological parameters, while CA at 800 ppm positively influenced the grain yield (58.40%) and yield-related parameters. MgSO4 at 400 ppm also supported higher grain yield by 47.29% over control. Under sufficient water condition, CA and MgSO4 each at 400 ppm significantly enhanced the grain yield by 92.25 and 105.37%, respectively, compared to control. Under rain-fed condition in field, two-time application of CA and MgSO4 at 800 ppm and 400 ppm, respectively, significantly enhanced the grain yield by 15.38%, and other grain yield-related parameters. The presence of root exudates under drought stress conditions is thought to improve plant osmoregulation, lower reactive oxygen species, and increase photosynthetic rates.

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Claims 10

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Under 15% polyethylene glycol water stress, succinic acid at 600 ppm significantly enhanced plant height, root length and fresh and dry weight of sensitive wheat 40 days after sowing under controlled conditions.

Treatment
succinic acid at 600 ppme0
Outcome
plant height, root length, and fresh and dry weight of plantse0
Direction
enhancede0
Qualifier
Under 15% polyethylene glycol induced water stress conditione0
Setting
controlled conditionse0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under 15% polyethylene glycol induced water stress condition, succinic acid at 600 ppm, and citric acid (CA) and magnesium sulfate (MgSO4) each at 900 ppm, significantly enhanced the plant height, root length, and fresh and dry weight of plants after 40 days of sowing under controlled conditions”

✓ located verbatim in the source · abstract, characters 497–793 · show in text ↑
t0

“Wheat ( Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 62–91 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Under 15% polyethylene glycol water stress, citric acid at 900 ppm significantly enhanced plant height, root length and fresh and dry weight of sensitive wheat 40 days after sowing under controlled conditions.

Treatment
citric acid (CA)e0
Outcome
plant height, root length, and fresh and dry weight of plantse0
Direction
enhancede0
Qualifier
each at 900 ppme0
Setting
controlled conditionse0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under 15% polyethylene glycol induced water stress condition, succinic acid at 600 ppm, and citric acid (CA) and magnesium sulfate (MgSO4) each at 900 ppm, significantly enhanced the plant height, root length, and fresh and dry weight of plants after 40 days of sowing under controlled conditions”

✓ located verbatim in the source · abstract, characters 497–793 · show in text ↑
t0

“Wheat ( Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 62–91 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Under 15% polyethylene glycol water stress, magnesium sulfate at 900 ppm significantly enhanced plant height, root length and fresh and dry weight of sensitive wheat 40 days after sowing under controlled conditions.

Treatment
magnesium sulfate (MgSO4)e0
Outcome
plant height, root length, and fresh and dry weight of plantse0
Direction
enhancede0
Qualifier
each at 900 ppme0
Setting
controlled conditionse0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under 15% polyethylene glycol induced water stress condition, succinic acid at 600 ppm, and citric acid (CA) and magnesium sulfate (MgSO4) each at 900 ppm, significantly enhanced the plant height, root length, and fresh and dry weight of plants after 40 days of sowing under controlled conditions”

✓ located verbatim in the source · abstract, characters 497–793 · show in text ↑
t0

“Wheat ( Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 62–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under water-limiting conditions in pots, citric acid at 800 ppm positively influenced the grain yield of wheat (58.40%).

Treatment
CA at 800 ppme0
Outcome
grain yielde0
Direction
positively influencede0
Value
58.40%e0
Qualifier
Under water limiting conditione0
Setting
potse0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under water limiting condition in pots, two-time application of CA at 1200 ppm affected majority of the physiological parameters, while CA at 800 ppm positively influenced the grain yield (58.40%)”

✓ located verbatim in the source · abstract, characters 795–991 · show in text ↑
t0

“Wheat ( Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 62–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Magnesium sulfate at 400 ppm supported higher grain yield of wheat by 47.29% over control.

Treatment
MgSO4 at 400 ppme0
Outcome
grain yielde0
Direction
highere0
Value
47.29%e0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“MgSO4 at 400 ppm also supported higher grain yield by 47.29% over control”

✓ located verbatim in the source · abstract, characters 1022–1095 · show in text ↑
t0

“Wheat ( Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 62–91 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Under sufficient water, citric acid at 400 ppm significantly enhanced wheat grain yield by 92.25% compared with control.

Treatment
CAe0
Outcome
grain yielde0
Direction
enhancede0
Value
92.25e0
Qualifier
each at 400 ppme0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under sufficient water condition, CA and MgSO4 each at 400 ppm significantly enhanced the grain yield by 92.25 and 105.37%, respectively, compared to control”

✓ located verbatim in the source · abstract, characters 1097–1254 · show in text ↑
t0

“Wheat ( Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 62–91 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Under sufficient water, magnesium sulfate at 400 ppm significantly enhanced wheat grain yield by 105.37% compared with control.

Treatment
MgSO4e0
Outcome
grain yielde0
Direction
enhancede0
Value
105.37%e0
Qualifier
each at 400 ppme0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under sufficient water condition, CA and MgSO4 each at 400 ppm significantly enhanced the grain yield by 92.25 and 105.37%, respectively, compared to control”

✓ located verbatim in the source · abstract, characters 1097–1254 · show in text ↑
t0

“Wheat ( Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 62–91 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Under rain-fed field conditions, two-time application of citric acid at 800 ppm and magnesium sulfate at 400 ppm significantly enhanced wheat grain yield by 15.38%.

Treatment
two-time application of CA and MgSO4 at 800 ppm and 400 ppm, respectivelye0
Outcome
grain yielde0
Direction
enhancede0
Value
15.38%e0
Setting
fielde0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under rain-fed condition in field, two-time application of CA and MgSO4 at 800 ppm and 400 ppm, respectively, significantly enhanced the grain yield by 15.38%”

✓ located verbatim in the source · abstract, characters 1256–1414 · show in text ↑
t0

“Wheat ( Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 62–91 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Under water-limiting conditions in pots, two-time application of citric acid at 1200 ppm affected the majority of the physiological parameters of wheat.

Treatment
two-time application of CA at 1200 ppme0
Outcome
majority of the physiological parameterse0
Setting
potse0

Not reportedComparatorDirection

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under water limiting condition in pots, two-time application of CA at 1200 ppm affected majority of the physiological parameters”

✓ located verbatim in the source · abstract, characters 795–923 · show in text ↑
t0

“Wheat ( Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 62–91 · show in text ↑
Mechanismhypothesisoriginal resultpositivebasis n/a

Claim · model-written summary

The presence of root exudates under drought is thought to improve osmoregulation, lower reactive oxygen species and increase photosynthetic rates in wheat.

Treatment
root exudatese0
Outcome
plant osmoregulation, lower reactive oxygen species, and increase photosynthetic ratese0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The presence of root exudates under drought stress conditions is thought to improve plant osmoregulation, lower reactive oxygen species, and increase photosynthetic rates”

✓ located verbatim in the source · abstract, characters 1458–1628 · show in text ↑
t0

“Wheat ( Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 62–91 · show in text ↑

citric acid · growth · Triticum aestivum (wheat)Results differ

7 papers: 5 positive, 2 negative or no effect

4 papers in the same direction as this paper · 2 in the opposite direction

  1. negative
  2. negative
  3. positive

3 papers more in this group

See all 7 papers →

magnesium sulfate · yield · Triticum aestivum (wheat)Results differ

8 papers: 7 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

magnesium sulfate · growth · Triticum aestivum (wheat)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

citric acid · yield · Triticum aestivum (wheat)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

succinic acid · growth · Triticum aestivum (wheat)Results agree

8 papers: 8 positive, 0 negative or no effect

7 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 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.