Abstract
The effects of low pH on antioxidant metabolism and nitrogen (N) assimilation in ginger seedlings under salt stress were investigated. A two‐way randomized block design was used: the main treatment consisted of two pH levels, normal and low pH (6.0 and 4.0, respectively), and the other treatment consisted of two salinity levels, 0 and 100 mmol l −1 Na + (NaCl and Na 2 SO 4 ). The results showed that low pH decreased the malondialdehyde (MDA) and hydrogen peroxide contents of ginger seedling leaves under salt stress. Moreover, low pH and salt stress significantly decreased the contents of non‐enzymatic antioxidants, including ascorbate (AsA) and glutathione (GSH), and increased the activities of antioxidant enzymes, such as superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and glutathione reductase (GR). In addition, salt stress inhibited the N assimilation process in ginger seedling leaves, but low pH improved N assimilation under salt stress. Our finding was that low pH alleviated oxidative damage and promoted N assimilation under salt stress.
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Claims 6
Claim · model-written summary
Low pH decreased malondialdehyde and hydrogen peroxide content of salt stressed ginger leaves.
- Taxon
- ginger
Zingiber officinalee0 - Organ / stage
- seedling leavese0
- Treatment
- low pHe0
- Outcome
- malondialdehyde (MDA) and hydrogen peroxide contentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low pH decreased the malondialdehyde (MDA) and hydrogen peroxide contents of ginger seedling leaves under salt stress.”
Claim · model-written summary
Low pH and salt stress significantly decreased ascorbate and glutathione content.
- Taxon
- gingerZingiber officinalet0
- Treatment
- low pH and salt stresse0
- Outcome
- contents of non‐enzymatic antioxidants, including ascorbate (AsA) and glutathione (GSH)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low pH and salt stress significantly decreased the contents of non‐enzymatic antioxidants, including ascorbate (AsA) and glutathione (GSH)”
t0“ginger”
Claim · model-written summary
Low pH and salt stress increased activities of six antioxidant enzymes.
- Taxon
- gingerZingiber officinalet0
- Treatment
- low pH and salt stresse0
- Outcome
- activities of antioxidant enzymese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low pH and salt stress significantly decreased the contents of non‐enzymatic antioxidants, including ascorbate (AsA) and glutathione (GSH), and increased the activities of antioxidant enzymes, such as superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and glutathione reductase (GR).”
t0“ginger”
Claim · model-written summary
Salt stress inhibited nitrogen assimilation in ginger seedling leaves.
- Taxon
- gingerZingiber officinalee0
- Organ / stage
- seedling leavese0
- Treatment
- salt stresse0
- Outcome
- N assimilation processe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt stress inhibited the N assimilation process in ginger seedling leaves”
Claim · model-written summary
Low pH improved nitrogen assimilation in ginger under salt stress.
- Taxon
- gingerZingiber officinalet0
- Treatment
- low pHe0
- Outcome
- N assimilatione0
- Direction
- improvede0
- Qualifier
- under salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low pH improved N assimilation under salt stress.”
t0“ginger”
Claim · model-written summary
Low pH alleviated oxidative damage under salt stress.
- Taxon
- gingerZingiber officinalet0
- Treatment
- low pHe0
- Outcome
- oxidative damagee0
- Direction
- alleviatede0
- Qualifier
- under salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low pH alleviated oxidative damage and promoted N assimilation under salt stress.”
t0“ginger”
The same questions in other papers
salinity · physiology: antioxidant enzymes · Zingiber officinale (ginger)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
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.