Abstract
This investigation tested the efficiency of nitric oxide (NO) in alleviation of Cu-induced adverse impacts on seed germination and photosynthesis in Indian mustard (Brassica juncea L.). Pre-treatment of B. juncea seeds with sodium nitroprusside (SNP; NO donor) significantly improved the seed germination rate and also alleviated Cu-accrued oxidative stress. However, in the absence of NO, Cu caused a higher reduction in seed germination rate. The presence of NO strengthened the antioxidant defense system (glutathione reductase, ascorbate peroxidase, and superoxide dismutase) and thereby sustained the lower lipid peroxidation, reduced H2O2 content, and thiobarbituric acid reactive substances in Cu-exposed seeds. NO pre-treated seeds also retained a higher amylase activity and exhibited an improved seed germination rate. This effect of NO under Cu stress was also seen in plants originated from the NO pre-treated seeds, where the role of NO pre-treatment was reflected in the improved photosynthetic potential of B. juncea. Overall, NO pre-treatment not only improved the germination rate in seeds but also carried its effects in the grown seedlings evidenced as improved photosynthesis and growth. Potential mechanisms involved in the action of NO pre-treatment included NO-mediated significant strengthening of the antioxidant defense system and decreases in Cu-caused oxidative stress parameters.
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Claims 10
Claim · model-written summary
SNP pretreatment significantly improved seed germination.
- Taxon
- B. juncea
Brassica junceae0 - Organ / stage
- seedse0
- Treatment
- sodium nitroprussidee0
- Outcome
- seed germination ratee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pre-treatment of B. juncea seeds with sodium nitroprusside (SNP; NO donor) significantly improved the seed germination rate”
Claim · model-written summary
SNP pretreatment alleviated copper-induced oxidative stress.
- Taxon
- B. junceaBrassica junceae0
- Treatment
- sodium nitroprussidee0
- Outcome
- Cu-accrued oxidative stresse0
- Direction
- alleviatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pre-treatment of B. juncea seeds with sodium nitroprusside (SNP; NO donor) significantly improved the seed germination rate and also alleviated Cu-accrued oxidative stress”
Claim · model-written summary
Copper reduced germination more in the absence of nitric oxide.
- Taxon
- Indian MustardBrassica junceat0
- Treatment
- Cue0
- Outcome
- seed germination ratee0
- Direction
- higher reductione0
- Comparator
- NOe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the absence of NO, Cu caused a higher reduction in seed germination rate”
t0“Indian Mustard”
Claim · model-written summary
Nitric oxide strengthened antioxidant defenses involving three named enzymes.
- Taxon
- Indian MustardBrassica junceat0
- Treatment
- NOe0
- Gene
- glutathione reductase, ascorbate peroxidase, and superoxide dismutasee0
- Outcome
- antioxidant defense systeme0
- Direction
- strengthenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“presence of NO strengthened the antioxidant defense system (glutathione reductase, ascorbate peroxidase, and superoxide dismutase)”
t0“Indian Mustard”
Claim · model-written summary
Nitric oxide kept lipid peroxidation lower in copper-exposed seeds.
- Taxon
- Indian MustardBrassica junceat0
- Organ / stage
- seedse0
- Treatment
- NOe0
- Outcome
- lipid peroxidatione0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The presence of NO strengthened the antioxidant defense system (glutathione reductase, ascorbate peroxidase, and superoxide dismutase) and thereby sustained the lower lipid peroxidation, reduced H2O2 content, and thiobarbituric acid reactive substances in Cu-exposed seeds”
t0“Indian Mustard”
Claim · model-written summary
Nitric oxide reduced hydrogen peroxide content in copper-exposed seeds.
- Taxon
- Indian MustardBrassica junceat0
- Organ / stage
- seedse0
- Treatment
- NOe0
- Outcome
- H2O2 contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The presence of NO strengthened the antioxidant defense system (glutathione reductase, ascorbate peroxidase, and superoxide dismutase) and thereby sustained the lower lipid peroxidation, reduced H2O2 content, and thiobarbituric acid reactive substances in Cu-exposed seeds”
t0“Indian Mustard”
Claim · model-written summary
Nitric oxide reduced thiobarbituric acid reactive substances in copper-exposed seeds.
- Taxon
- Indian MustardBrassica junceat0
- Organ / stage
- seedse0
- Treatment
- NOe0
- Outcome
- thiobarbituric acid reactive substancese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The presence of NO strengthened the antioxidant defense system (glutathione reductase, ascorbate peroxidase, and superoxide dismutase) and thereby sustained the lower lipid peroxidation, reduced H2O2 content, and thiobarbituric acid reactive substances in Cu-exposed seeds”
t0“Indian Mustard”
Claim · model-written summary
Nitric oxide pretreatment retained higher amylase activity.
- Taxon
- Indian MustardBrassica junceat0
- Organ / stage
- seedse0
- Treatment
- NO pre-treatede0
- Outcome
- amylase activitye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NO pre-treated seeds also retained a higher amylase activity”
t0“Indian Mustard”
Claim · model-written summary
Nitric oxide pretreatment improved photosynthetic potential of mustard plants.
- Taxon
- B. junceaBrassica junceae0
- Treatment
- NO pre-treatmente0
- Outcome
- photosynthetic potentiale0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“role of NO pre-treatment was reflected in the improved photosynthetic potential of B. juncea”
Claim · model-written summary
Nitric oxide pretreatment improved seedling growth.
- Taxon
- Indian MustardBrassica junceat0
- Organ / stage
- seedlingse0
- Treatment
- NO pre-treatmente0
- Outcome
- growthe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NO pre-treatment not only improved the germination rate in seeds but also carried its effects in the grown seedlings evidenced as improved photosynthesis and growth”
t0“Indian Mustard”
The same questions in other papers
sodium nitroprusside · growth · Brassica juncea (Indian mustard)Results agree
1 paper in the same direction as this paper
- positive
nitric oxide · physiology: photosynthesis · Brassica juncea (Indian mustard)Results agree
1 paper in the same direction as this paper
- positive
nitric oxide · physiology: oxidative · Brassica juncea (Indian mustard)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
copper atom · growth · Brassica juncea (Indian mustard)Results agree
5 papers in the same direction as this paper
- negative
- negative
- negative
2 papers more in this group
See all 6 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.