Paper · 2008 · Pakistan Journal of Biological Sciences

Antioxidant Responses of Two Barley Varieties to Saline Stress

F. Khosravine; R. Heydari; T. Farboodnia

6
claims
12
verbatim quotes
22
citations
1
research areas
—
Not open access

Abstract

In this study, we investigated antioxidant responses of activities of Superoxide Dismutase (SOD), Catalase (CAT), Ascorbate Peroxidase (APX) and Guaiacol Peroxidase (GPX) to saline stress in two barley varieties named Hordeum vulgare L. var. Afzal and var. EMB82-12 treated with 50, 100, 200, 300 and 400 mM NaCl for 3 days. The MDA content of Afzal plants grown under different salt regimes remained nearly constant but it largely increased in EMB82-12 plants under the same conditions. There was a linear and significant correlation in CAT, APX, SOD, GPX activities in Afzal plants in response to increased salt concentration. The strong and positive correlation between antioxidant enzymes and salt concentrations, may account for the MDA level of Afzal plants remaining constant in response to different salt regimes. In general, the activities of antioxidant enzymes were increased in the root and shoot under saline stress. But the increase was more significant and consistent in the root. Among the antioxidant enzymes, CAT activity was increased the most drastically.

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Claims 6

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

MDA stayed nearly constant in Afzal under salt treatments.

Material
Afzale0
Treatment
different salt regimese0
Outcome
MDA contente0
Direction
remained nearly constante0

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

“The MDA content of Afzal plants grown under different salt regimes remained nearly constant but it largely increased in EMB82-12 plants under the same conditions.”

✓ located verbatim in the source · abstract, characters 325–487 · show in text ↑
t0

“Barley”

✓ located verbatim in the source · title, characters 29–35 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

MDA increased substantially in EMB82-12 under salt treatments.

Material
EMB82-12e0
Treatment
different salt regimese0
Outcome
MDA contente0
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

“The MDA content of Afzal plants grown under different salt regimes remained nearly constant but it largely increased in EMB82-12 plants under the same conditions.”

✓ located verbatim in the source · abstract, characters 325–487 · show in text ↑
t0

“Barley”

✓ located verbatim in the source · title, characters 29–35 · show in text ↑
Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

CAT, APX, SOD and GPX activities correlated positively with salt concentration in Afzal.

Material
Afzale0
Treatment
increased salt concentratione0
Outcome
CAT, APX, SOD, GPX activitiese0
Direction
increasede0

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

“There was a linear and significant correlation in CAT, APX, SOD, GPX activities in Afzal plants in response to increased salt concentration.”

✓ located verbatim in the source · abstract, characters 488–628 · show in text ↑
t0

“Barley”

✓ located verbatim in the source · title, characters 29–35 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Antioxidant enzyme activities generally increased in roots and shoots under saline stress.

Organ / stage
root and shoote0
Treatment
saline stresse0
Outcome
activities of antioxidant enzymese0
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

“In general, the activities of antioxidant enzymes were increased in the root and shoot under saline stress.”

✓ located verbatim in the source · abstract, characters 822–929 · show in text ↑
t0

“Barley”

✓ located verbatim in the source · title, characters 29–35 · show in text ↑
Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The increase in antioxidant enzyme activity was stronger and more consistent in roots.

Organ / stage
roote0
Outcome
increasee0
Direction
more significant and consistente0

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

“But the increase was more significant and consistent in the root.”

✓ located verbatim in the source · abstract, characters 930–995 · show in text ↑
t0

“Barley”

✓ located verbatim in the source · title, characters 29–35 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

CAT activity increased most sharply among the antioxidant enzymes.

Gene
CATe0
Outcome
CAT activitye0
Direction
increased the most drasticallye0

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

“Among the antioxidant enzymes, CAT activity was increased the most drastically.”

✓ located verbatim in the source · abstract, characters 996–1075 · show in text ↑
t0

“Barley”

✓ located verbatim in the source · title, characters 29–35 · 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. positive
  2. negative
  3. negative

4 papers more in this group

See all 8 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 →

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.