Paper · 2012 · Journal of Integrative Agriculture

Influence of Diazotrophic Bacteria on Antioxidant Enzymes and Some Biochemical Characteristics of Soybean Subjected to Water Stress

Hamed Zakikhani; Mohammad Reza Ardakani; Farhad Rejali; et al.

8
claims
17
verbatim quotes
19
citations
3
research areas
✓
Open access · cc-by-nc-nd

Abstract

Drought stress is an abiotic stress that imposes serious constraints on plants. The present investigation was carried out to determine the inter-relationship between some physiological attributes of soybeans affected by drought stress and pure isolates of Azotobacter and Azospirillum. Drought stress and bacterial application increased catalase and glutathione peroxidase activity, whereas drought stress increased superoxide dismutase activity during the pod-filling stage. Abscisic acid and proline levels increased due to drought stress and bacterial application during the flowering stage, whereas total plant nitrogen was enhanced under well-watered conditions when plants were inoculated with bacteria. The close relationship between enzyme activity and drought stress with bacteria indicated that antioxidant enzymes play an important role in alleviating the detrimental effects of water stress. In addition, the enhancement of abscisic acid and proline could be positively linked with drought stress, and drought-induced abscisic acid could induce proline accumulation and the expression of antioxidant enzyme genes.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Drought stress increased catalase and glutathione peroxidase activity.

Taxon
SoybeanGlycine maxt0
Treatment
Drought stresse0
Outcome
catalase and glutathione peroxidase activitye0
Direction
increasede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Drought stress and bacterial application increased catalase and glutathione peroxidase activity”

✓ located verbatim in the source · abstract, characters 286–381 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 98–105 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bacterial application increased catalase and glutathione peroxidase activity.

Taxon
SoybeanGlycine maxt0
Treatment
bacterial applicatione0
Interactor
AzotobacterAzotobactere1symbiont
Outcome
catalase and glutathione peroxidase activitye0
Direction
increasede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Azotobacter
Azotobacter · Interactor · picture of the genus (one of its species)DAN H. JONES · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Drought stress and bacterial application increased catalase and glutathione peroxidase activity”

✓ located verbatim in the source · abstract, characters 286–381 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 98–105 · show in text ↑
e1

“pure isolates of Azotobacter and Azospirillum”

✓ located verbatim in the source · abstract, characters 239–284 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Drought stress increased superoxide dismutase activity during pod filling.

Taxon
SoybeanGlycine maxt0
Organ / stage
pod-filling stagee0
Treatment
drought stresse0
Outcome
superoxide dismutase activitye0
Direction
increasede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“drought stress increased superoxide dismutase activity during the pod-filling stage”

✓ located verbatim in the source · abstract, characters 391–474 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 98–105 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Drought stress increased abscisic acid and proline levels during flowering.

Taxon
SoybeanGlycine maxt0
Organ / stage
flowering stagee0
Treatment
drought stresse0
Outcome
Abscisic acid and proline levelse0
Direction
increasede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Abscisic acid and proline levels increased due to drought stress and bacterial application during the flowering stage”

✓ located verbatim in the source · abstract, characters 476–593 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 98–105 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bacterial application increased abscisic acid and proline levels during flowering.

Taxon
SoybeanGlycine maxt0
Organ / stage
flowering stagee0
Treatment
bacterial applicatione0
Outcome
Abscisic acid and proline levelse0
Direction
increasede0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Abscisic acid and proline levels increased due to drought stress and bacterial application during the flowering stage”

✓ located verbatim in the source · abstract, characters 476–593 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 98–105 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bacterial inoculation enhanced total plant nitrogen under well-watered conditions.

Taxon
SoybeanGlycine maxt0
Treatment
inoculated with bacteriae0
Interactor
bacteriaBacteriae0symbiont
Outcome
total plant nitrogene0
Direction
enhancede0
Qualifier
well-watered conditionse0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“total plant nitrogen was enhanced under well-watered conditions when plants were inoculated with bacteria”

✓ located verbatim in the source · abstract, characters 603–708 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 98–105 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The authors interpreted antioxidant enzymes as alleviating water-stress damage.

Taxon
SoybeanGlycine maxt0
Outcome
detrimental effects of water stresse0
Qualifier
antioxidant enzymese0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“antioxidant enzymes play an important role in alleviating the detrimental effects of water stress”

✓ located verbatim in the source · abstract, characters 805–902 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 98–105 · show in text ↑
Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

The authors proposed that drought-induced abscisic acid could induce proline accumulation and antioxidant-enzyme gene expression.

Taxon
SoybeanGlycine maxt0
Compound
abscisic acide0
Outcome
proline accumulation and the expression of antioxidant enzyme genese0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“drought-induced abscisic acid could induce proline accumulation and the expression of antioxidant enzyme genes”

✓ located verbatim in the source · abstract, characters 1014–1124 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 98–105 · show in text ↑

drought · physiology: osmolytes · Glycine max (soybean)Results differ

21 papers: 10 positive, 11 negative or no effect

9 papers in the same direction as this paper · 11 in the opposite direction

  1. positive
  2. negative
  3. negative

17 papers more in this group

See all 21 papers →

drought · physiology: antioxidant enzymes · Glycine max (soybean)Results differ

24 papers: 17 positive, 7 negative or no effect

16 papers in the same direction as this paper · 7 in the opposite direction

  1. negative
  2. negative
  3. negative

20 papers more in this group

See all 24 papers →

inoculation · Bacteria · Glycine max (soybean)Positive and negative results

10 papers: 8 positive, 2 negative or no effect

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

  1. negative
  2. no effect
  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.