Paper · 2024 · Frontiers in Plant Science

Unravelling drought and salinity stress responses in barley genotypes: physiological, biochemical, and molecular insights

Hameed Alsamadany; Abdulbaki Shehu Abdulbaki; Yahya Alzahrani

13
claims
26
verbatim quotes
22
citations
2
research areas
✓
Open access · cc-by

Abstract

L.). Employing three distinct barley genotypes-Traveller, Prunella, and Zahna-we scrutinize their physiological, biochemical, and molecular adaptations under stress conditions. Our findings underscore genotype-specific responses, unravelling the multifaceted mechanisms that govern stress tolerance. Chlorophyll content, a vital indicator of photosynthetic efficiency, exhibits significant variations across genotypes. Salinity stress induces a decline in chlorophyll levels, while drought stress triggers a more nuanced response. Stomatal conductance, a key regulator of water loss, also diverges among the genotypes. Traveller displays remarkable stomatal closure under drought, conserving water, whereas Prunella and Zahna exhibit contrasting patterns. Antioxidant enzyme activities, crucial for combating oxidative stress, fluctuate significantly. Activities of superoxide dismutase (SOD) and catalase (CAT) surge under salinity stress, while drought predominantly impacts SOD. Gene expression profiling reveals genotype-specific signatures, with stress-responsive genes modulating adaptive pathways. Correlation analyses revealed the intricate interplay of the physiological and biochemical parameters. Genotype-specific adaptations, coupled with dynamic physiological and molecular responses, underscore the plasticity of barley's stress tolerance mechanisms. Throughout the study, the Zahna genotype demonstrated notable tolerance in terms of performance. These insights hold promise for breeding resilient cultivars, bolstering food security in an increasingly unpredictable climate. By deciphering the barley stress symphony, we contribute to the harmonious orchestration of sustainable agricultural practices.

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 13

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Chlorophyll content varied significantly among barley genotypes.

Material
genotypese0
Outcome
Chlorophyll contente0

Not reportedDirection

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“Chlorophyll content, a vital indicator of photosynthetic efficiency, exhibits significant variations across genotypes”

✓ located verbatim in the source · abstract, characters 300–417 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salinity lowered chlorophyll levels.

Treatment
Salinity stresse0
Outcome
chlorophyll levelse0
Direction
declinee0

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“Salinity stress induces a decline in chlorophyll levels”

✓ located verbatim in the source · abstract, characters 419–474 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Drought produced a more nuanced chlorophyll response.

Treatment
drought stresse0
Outcome
more nuanced responsee0

Not reportedDirection

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“drought stress triggers a more nuanced response”

✓ located verbatim in the source · abstract, characters 482–529 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Stomatal conductance differed among genotypes.

Material
genotypese0
Outcome
Stomatal conductancee0

Not reportedDirection

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“Stomatal conductance, a key regulator of water loss, also diverges among the genotypes”

✓ located verbatim in the source · abstract, characters 531–617 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Traveller closed stomata under drought.

Material
Travellere0
Treatment
droughte0
Outcome
stomatal closuree0

Not reportedComparatorDirection

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“Traveller displays remarkable stomatal closure under drought, conserving water”

✓ located verbatim in the source · abstract, characters 619–697 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Prunella and Zahna showed contrasting stomatal patterns.

Material
Prunella and Zahnae0
Outcome
contrasting patternse0

Not reportedDirection

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“Prunella and Zahna exhibit contrasting patterns”

✓ located verbatim in the source · abstract, characters 707–754 · show in text ↑
Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Antioxidant enzyme activities fluctuated significantly.

Outcome
Antioxidant enzyme activitiese0

Not reportedDirection

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“Antioxidant enzyme activities, crucial for combating oxidative stress, fluctuate significantly”

✓ located verbatim in the source · abstract, characters 756–850 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SOD activity rose under salinity stress.

Treatment
salinity stresse0
Gene
superoxide dismutase (SOD)e0
Outcome
Activities of superoxide dismutase (SOD)e0
Direction
surgee0

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“Activities of superoxide dismutase (SOD) and catalase (CAT) surge under salinity stress”

✓ located verbatim in the source · abstract, characters 852–939 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

CAT activity rose under salinity stress.

Treatment
salinity stresse0
Gene
catalase (CAT)e0
Outcome
catalase (CAT)e0
Direction
surgee0

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“Activities of superoxide dismutase (SOD) and catalase (CAT) surge under salinity stress”

✓ located verbatim in the source · abstract, characters 852–939 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Drought predominantly affected SOD activity.

Treatment
droughte0
Gene
SODe0
Outcome
SODe0

Not reportedDirection

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“drought predominantly impacts SOD”

✓ located verbatim in the source · abstract, characters 947–980 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Gene expression showed genotype-specific signatures.

Gene
stress-responsive genese0
Outcome
genotype-specific signaturese0

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“Gene expression profiling reveals genotype-specific signatures, with stress-responsive genes modulating adaptive pathways”

✓ located verbatim in the source · abstract, characters 982–1103 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Physiological and biochemical parameters were correlated.

Outcome
physiological and biochemical parameterse0
Qualifier
intricate interplaye0

Not reportedSettingDirection

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“Correlation analyses revealed the intricate interplay of the physiological and biochemical parameters”

✓ located verbatim in the source · abstract, characters 1105–1206 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Zahna showed notable tolerance in performance.

Material
Zahnae0
Outcome
notable tolerance in terms of performancee0

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

t0

“barley”

✓ located verbatim in the source · title, characters 53–59 · show in text ↑
e0

“the Zahna genotype demonstrated notable tolerance in terms of performance”

✓ located verbatim in the source · abstract, characters 1388–1461 · show in text ↑

salinity · physiology: antioxidant enzymes · Hordeum vulgare (barley)Results differ

8 papers: 3 positive, 5 negative or no effect

2 papers in the same direction as this paper · 5 in the opposite direction

  1. negative
  2. negative
  3. negative

4 papers more in this group

See all 8 papers →

drought · physiology: gas exchange · Hordeum vulgare (barley)Positive and negative results

17 papers: 2 positive, 15 negative or no effect

1 paper in the same direction as this paper · 15 in the opposite direction

  1. negative
  2. negative
  3. negative

13 papers more in this group

See all 17 papers →

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

18 papers: 2 positive, 16 negative or no effect

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

  1. positive
  2. positive
  3. no effect

14 papers more in this group

See all 18 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.