Paper · 2023 · Romanian Agricultural Research

Mitigation of PEG-Induces Drought Stress in Wheat (Triticum durum) by Exogenous Application of Proline

Hayoun Houda; Ykhlef Nadia; Ryma Bouldjedj; et al.

7
claims
10
verbatim quotes
7
citations
2
research areas
✓
Open access

Abstract

Drought is considered one of the most important environmental stresses that has serious limitations on production of most crop plants, including wheat. Proline is an amino acid closely associated with plant responses to environmental constraints. This research aims to study the response of four varieties of durum wheat (Triticum durum) subjected to water stress stimulated by polyethylene glycol (20% PEG-6000) which is equivalent to osmotic potential of -1.2 Mpa. A total of 4 wheat genotypes were grown hydroponically and four treatments were imposed. Wheat plants exposed to drought stress showed reduced growth, which was correlated with reduced relative water content, chlorophyll content and stomatal conductance as evidenced by principle component analysis (PCA). It also revealed that electrolyte leakage and malondialdehyde (MDA) accumulations were closely related with the declined growth and wheat plants development under drought stress. Importantly, application of 6 mM of exogenous proline improved the growth responses of wheat plants to drought stress. Proline strengthened numerous physio-biochemical processes coupled with decreasing in MDA levels which indicates successful adaptation of wheat plants to drought stress. The results of PCA strongly supported that application of proline in stressful conditions ameliorated the responses of wheat mostly by enhancing physiological and biochemical activities. Eventually, it can be concluded that proline supplementation is one of the useful approaches to alleviate the adverse effects of water stress on wheat crop.

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Claims 7

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Drought stress reduced wheat growth.

Treatment
drought stresse0
Outcome
growthe0
Direction
reducede0

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

“Wheat plants exposed to drought stress showed reduced growth”

✓ located verbatim in the source · abstract, characters 556–616 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Reduced growth correlated with reduced relative water, chlorophyll, and stomatal conductance.

Outcome
reduced growthe0
Direction
reducede0
Qualifier
reduced relative water content, chlorophyll content and stomatal conductancee0

Not reportedSetting

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

“reduced growth, which was correlated with reduced relative water content, chlorophyll content and stomatal conductance”

✓ located verbatim in the source · abstract, characters 602–720 · show in text ↑
t0

“Wheat (Triticum durum)”

✓ located verbatim in the source · title, characters 44–66 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Electrolyte leakage and MDA accumulation were closely related to declining growth and development.

Outcome
declined growth and wheat plants developmente0
Direction
declinede0
Qualifier
electrolyte leakage and malondialdehyde (MDA) accumulationse0

Not reportedSetting

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

“electrolyte leakage and malondialdehyde (MDA) accumulations were closely related with the declined growth and wheat plants development under drought stress.”

✓ located verbatim in the source · abstract, characters 795–951 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Six millimolar exogenous proline improved wheat growth under drought stress.

Treatment
6 mM of exogenous prolinee0
Outcome
growth responsese0
Direction
improvede0
Qualifier
drought stresse0

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

“application of 6 mM of exogenous proline improved the growth responses of wheat plants to drought stress.”

✓ located verbatim in the source · abstract, characters 965–1070 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Proline decreased MDA levels in drought-stressed wheat.

Treatment
Prolinee0
Outcome
MDA levelse0
Direction
decreasinge0

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

“Proline strengthened numerous physio-biochemical processes coupled with decreasing in MDA levels”

✓ located verbatim in the source · abstract, characters 1071–1167 · show in text ↑
e1

“Wheat plants exposed to drought stress showed reduced growth”

✓ located verbatim in the source · abstract, characters 556–616 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Proline strengthened wheat physiological and biochemical processes.

Treatment
Prolinee0
Outcome
physio-biochemical processese0
Direction
strengthenede0

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

“Proline strengthened numerous physio-biochemical processes coupled with decreasing in MDA levels”

✓ located verbatim in the source · abstract, characters 1071–1167 · show in text ↑
e1

“Wheat plants exposed to drought stress showed reduced growth”

✓ located verbatim in the source · abstract, characters 556–616 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend proline supplementation to alleviate water stress in wheat.

Outcome
proline supplementatione0

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

“proline supplementation is one of the useful approaches to alleviate the adverse effects of water stress on wheat crop.”

✓ located verbatim in the source · abstract, characters 1465–1584 · show in text ↑

proline · physiology: oxidative · Triticum aestivum (wheat)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

proline · growth · Triticum aestivum (wheat)Results agree

11 papers: 11 positive, 0 negative or no effect

10 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

7 papers more in this group

See all 11 papers →

drought · growth · Triticum aestivum (wheat)Positive and negative results

431 papers: 86 positive, 345 negative or no effect

344 papers in the same direction as this paper · 86 in the opposite direction

  1. negative
  2. positive
  3. positive

427 papers more in this group

See all 431 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.