Paper · 2024 · South African Journal of Botany

Unlocking Triticum aestivum L. resilience: Exogenous proline's remarkable role in mitigating lead stress, and delving into the secrets of TaGSK1 gene expression

Sidra Balooch; Sibgha Noreen; Seema Mahmood; et al.

8
claims
12
verbatim quotes
5
citations
3
research areas
✓
Open access · cc-by

Abstract

The application of proline as foliar spraying has emerged as a promising solution to combat lead-induced crop stress. This study highlights the effectiveness of external proline in enhancing wheat crop health under lead stress. We reveal how lead stress negatively impacts key factors like biomass, chlorophyll levels, and crop yield, particularly in 100-grain weight. Gas exchange parameters, including stomatal conductance, CO 2 levels, photosynthesis, water-use efficiency, and transpiration, also suffer under lead stress. Significantly, exposure to lead stress triggers the activation of antioxidant enzymes and elevates levels of proline, calcium, and protein. Nonetheless, the application of foliar proline proves highly effective in alleviating these detrimental effects by reducing reactive oxygen species and enhancing proline and protein levels in wheat. Additionally, our findings demonstrate a significant upregulation of TaGSK1 gene expression at different proline concentrations. Compared to controls, TaGSK1 expression increases by 1.7-fold under 50 mM proline stress and an impressive 4.7-fold under 200 mM proline stress in wheat. This finding holds promise in alleviating the adverse effects of lead stress and strengthening crop resilience for a more secure and sustainable future in wheat cultivation amid various stressors.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

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Claims 8

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Lead stress reduced biomass, chlorophyll and 100-grain weight.

Taxon
Triticum aestivum L.Triticum aestivumt0
Treatment
lead stresse0
Outcome
biomass, chlorophyll levels, and crop yielde0
Direction
negatively impactse0

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

“lead stress negatively impacts key factors like biomass, chlorophyll levels, and crop yield, particularly in 100-grain weight”

✓ located verbatim in the source · abstract, characters 242–367 · show in text ↑
t0

“Triticum aestivum L.”

✓ located verbatim in the source · title, characters 10–30 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Gas exchange parameters suffered under lead stress.

Taxon
Triticum aestivum L.Triticum aestivumt0
Treatment
lead stresse0
Outcome
stomatal conductance, CO 2 levels, photosynthesise0
Direction
suffere0

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

“Gas exchange parameters, including stomatal conductance, CO 2 levels, photosynthesis, water-use efficiency, and transpiration, also suffer under lead stress”

✓ located verbatim in the source · abstract, characters 369–525 · show in text ↑
t0

“Triticum aestivum L.”

✓ located verbatim in the source · title, characters 10–30 · show in text ↑
Intervention effectobservedoriginal resultmixedsignificant (as stated)measured

Claim · model-written summary

Lead stress activated antioxidant enzymes.

Taxon
Triticum aestivum L.Triticum aestivumt0
Treatment
lead stresse0
Outcome
antioxidant enzymese0
Direction
activatione0

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

“exposure to lead stress triggers the activation of antioxidant enzymes and elevates levels of proline, calcium, and protein”

✓ located verbatim in the source · abstract, characters 542–665 · show in text ↑
t0

“Triticum aestivum L.”

✓ located verbatim in the source · title, characters 10–30 · show in text ↑
Intervention effectobservedoriginal resultmixedsignificant (as stated)measured

Claim · model-written summary

Lead stress elevated proline, calcium and protein levels.

Taxon
Triticum aestivum L.Triticum aestivumt0
Treatment
lead stresse0
Outcome
levels of proline, calcium, and proteine0
Direction
elevatese0

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

“exposure to lead stress triggers the activation of antioxidant enzymes and elevates levels of proline, calcium, and protein”

✓ located verbatim in the source · abstract, characters 542–665 · show in text ↑
t0

“Triticum aestivum L.”

✓ located verbatim in the source · title, characters 10–30 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar proline reduced reactive oxygen species in wheat.

Treatment
foliar prolinee0
Outcome
reactive oxygen speciese0
Direction
reducinge0

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 foliar proline proves highly effective in alleviating these detrimental effects by reducing reactive oxygen species and enhancing proline and protein levels in wheat”

✓ located verbatim in the source · abstract, characters 684–864 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar proline enhanced wheat proline and protein levels.

Treatment
foliar prolinee0
Outcome
proline and protein levelse0
Direction
enhancinge0

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 foliar proline proves highly effective in alleviating these detrimental effects by reducing reactive oxygen species and enhancing proline and protein levels in wheat”

✓ located verbatim in the source · abstract, characters 684–864 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 50 mM proline, TaGSK1 expression was 1.7-fold above control.

Treatment
50 mM proline stresse0
Gene
TaGSK1e0
Outcome
TaGSK1 expressione0
Direction
increasese0
Value
1.7-folde0
Comparator
controlse0

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

“Compared to controls, TaGSK1 expression increases by 1.7-fold under 50 mM proline stress and an impressive 4.7-fold under 200 mM proline stress in wheat”

✓ located verbatim in the source · abstract, characters 995–1147 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 200 mM proline, TaGSK1 expression was 4.7-fold above control.

Treatment
200 mM proline stresse0
Gene
TaGSK1e0
Outcome
TaGSK1 expressione0
Direction
increasese0
Value
4.7-folde0
Comparator
controlse0

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

“Compared to controls, TaGSK1 expression increases by 1.7-fold under 50 mM proline stress and an impressive 4.7-fold under 200 mM proline stress in wheat”

✓ located verbatim in the source · abstract, characters 995–1147 · show in text ↑

proline · molecular: expression · Triticum aestivum (wheat)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 →

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 →

heavy metal · physiology: photosynthesis · Triticum aestivum (wheat)Positive and negative results

22 papers: 2 positive, 20 negative or no effect

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

  1. positive
  2. positive
  3. negative

18 papers more in this group

See all 22 papers →

heavy metal · physiology: pigments · Triticum aestivum (wheat)Positive and negative results

27 papers: 2 positive, 25 negative or no effect

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

  1. positive
  2. positive
  3. negative

23 papers more in this group

See all 27 papers →

application · physiology: oxidative · Triticum aestivum (wheat)Positive and negative results

45 papers: 44 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

41 papers more in this group

See all 45 papers →

application · molecular: expression · Triticum aestivum (wheat)Results agree

10 papers: 10 positive, 0 negative or no effect

9 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

6 papers more in this group

See all 10 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.