Abstract
Abstract Excess salinity is a major environmental threat to agriculture. However, the adaptive mechanisms underlying salt tolerance in soybean ( Glycine max [L.] Merr.) remain unclear. The aim of this study was to investigate the differences between salt‐tolerant and salt‐sensitive soybeans in their physiological characteristics and the expression patterns of 8 cation antiporters under salt stress. The inhibitory effects of salt stress on growth and photosynthesis in salt‐sensitive soybean were stronger than those in salt‐tolerant soybean. The concentration of phosphate and most other ions in the seedlings significantly declined under a 150‐mM‐NaCl treatment. Relative K + , Mg 2+ , and P concentrations were significantly positively correlated with relative net photosynthetic rate. GmNHX1 ( Glyma.10G158700 ) and GmNcl1 ( Glyma.03g171500 ) had similar expression patterns in the salt‐tolerant and salt‐sensitive cultivars. Furthermore, a significant correlation was present between the transcript levels of these 2 genes and the Na + concentration in soybean leaves. In addition to GmSALT3 , which is the major gene in soybean for salt tolerance in previous studies, GmNHX1 and GmNcl1 may be associated with salt tolerance in soybean to some extent. The salt‐tolerant cultivars in this study maintained higher K + , Mg 2+ , and P concentrations in the leaf and had higher photosynthetic rates than the salt‐sensitive cultivar did under salt stress. These findings can provide theoretical references for the molecular breeding of salt‐tolerant soybean and the sustainable use of saline soils.
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Claims 9
Claim · model-written summary
Salt stress inhibited growth and photosynthesis more strongly in salt-sensitive soybean than in salt-tolerant soybean.
- Taxon
- soybean
Glycine maxt0 - Treatment
- salt stresse1
- Outcome
- growth and photosynthesise1
- Direction
- strongere1
- Comparator
- salt‐tolerant soybeane1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max[L.] Merr.)”
e1“The inhibitory effects of salt stress on growth and photosynthesis in salt‐sensitive soybean were stronger than those in salt‐tolerant soybean”
Claim · model-written summary
A 150 mM NaCl treatment significantly declined the concentration of phosphate and most other ions in soybean seedlings.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 150‐mM‐NaCle2
- Outcome
- concentration of phosphate and most other ionse2
- Direction
- declinede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max[L.] Merr.)”
e2“The concentration of phosphate and most other ions in the seedlings significantly declined under a 150‐mM‐NaCl treatment”
Claim · model-written summary
Relative K+, Mg2+ and P concentrations were significantly positively correlated with relative net photosynthetic rate in soybean.
- Taxon
- soybeanGlycine maxt0
- Compound
- K+, Mg2+, and Pe3
- Outcome
- relative net photosynthetic ratee3
- Direction
- positively correlatede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max[L.] Merr.)”
e3“Relative K + , Mg 2+ , and P concentrations were significantly positively correlated with relative net photosynthetic rate”
Claim · model-written summary
GmNHX1 had similar expression patterns in salt-tolerant and salt-sensitive soybean cultivars.
- Taxon
- soybeanGlycine maxt0
- Gene
- GmNHX1e4
- Outcome
- expression patternse4
- Comparator
- salt‐sensitive cultivarse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max[L.] Merr.)”
e4“GmNHX1 ( Glyma.10G158700 ) and GmNcl1 ( Glyma.03g171500 ) had similar expression patterns in the salt‐tolerant and salt‐sensitive cultivars”
Claim · model-written summary
GmNcl1 had similar expression patterns in salt-tolerant and salt-sensitive soybean cultivars.
- Taxon
- soybeanGlycine maxt0
- Gene
- GmNcl1e4
- Outcome
- expression patternse4
- Comparator
- salt‐sensitive cultivarse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max[L.] Merr.)”
e4“GmNHX1 ( Glyma.10G158700 ) and GmNcl1 ( Glyma.03g171500 ) had similar expression patterns in the salt‐tolerant and salt‐sensitive cultivars”
Claim · model-written summary
Transcript levels of the two genes were significantly correlated with Na+ concentration in soybean leaves.
- Taxon
- soybeanGlycine maxe5
- Compound
- Na +e5
- Outcome
- transcript levelse5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“a significant correlation was present between the transcript levels of these 2 genes and the Na + concentration in soybean leaves”
Claim · model-written summary
GmNHX1 and GmNcl1 may be associated with salt tolerance in soybean.
- Taxon
- soybeanGlycine maxe6
- Gene
- GmNHX1 and GmNcl1e6
- Outcome
- salt tolerancee6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“In addition to GmSALT3 , which is the major gene in soybean for salt tolerance in previous studies, GmNHX1 and GmNcl1 may be associated with salt tolerance in soybean to some extent”
Claim · model-written summary
Salt-tolerant soybean cultivars maintained higher K+, Mg2+ and P concentrations in leaves than the salt-sensitive cultivar under salt stress.
- Taxon
- soybeanGlycine maxt0
- Material
- salt‐tolerant cultivarse7
- Treatment
- salt stresse7
- Outcome
- K + , Mg 2+ , and P concentrations in the leafe7
- Direction
- highere7
- Comparator
- salt‐sensitive cultivare7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max[L.] Merr.)”
e7“The salt‐tolerant cultivars in this study maintained higher K + , Mg 2+ , and P concentrations in the leaf and had higher photosynthetic rates than the salt‐sensitive cultivar did under salt stress”
Claim · model-written summary
Salt-tolerant soybean cultivars had higher photosynthetic rates than the salt-sensitive cultivar under salt stress.
- Taxon
- soybeanGlycine maxt0
- Material
- salt‐tolerant cultivarse7
- Treatment
- salt stresse7
- Outcome
- photosynthetic ratese7
- Direction
- highere7
- Comparator
- salt‐sensitive cultivare7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean (Glycine max[L.] Merr.)”
e7“The salt‐tolerant cultivars in this study maintained higher K + , Mg 2+ , and P concentrations in the leaf and had higher photosynthetic rates than the salt‐sensitive cultivar did under salt stress”
The same questions in other papers
salinity · physiology: photosynthesis · Glycine max (soybean)Results differ
28 papers in the same direction as this paper · 8 in the opposite direction
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