Abstract
Abstract Salt stress was evaluated on root growth, enzyme activities (phenylalanine ammonia‐lyase or PAL and soluble plus cell wall‐bound peroxidase or POD), hydrogen peroxide (H 2 O 2 ) production, total phenolic content and lignin content and composition in soybean ( Glycine max L. Merrill) roots. Three‐day‐old seedlings were cultivated in half‐strength Hoagland’s solution (pH 6.0), with or without addition of 50–200 m m of NaCl, into a growth chamber (25 °C, 12/12 h light/dark photoperiod, irradiance of 280 μ mol m −2 s −1 ) for 24 h. In general, root length and fresh and dry weights decreased after NaCl treatment. PAL activity decreased, soluble and cell wall‐bound POD activities increased, and H 2 O 2 content significantly decreased after NaCl exposure. Consequently, total phenolic and lignin contents and p ‐hydroxyphenyl (H) and syringyl (S) monomers of lignin increased in NaCl‐treated roots. Altogether, these results suggest that the effects caused by NaCl may be owing to the enhanced lignin production that solidifies the cell wall and restricts root growth.
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Claims 7
Claim · model-written summary
NaCl reduced soybean root length and fresh and dry weight.
- Taxon
- soybean
Glycine maxt0 - Organ / stage
- roote0
- Treatment
- NaCl treatmente0
- Outcome
- root length and fresh and dry weightse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root length and fresh and dry weights decreased after NaCl treatment.”
t0“soybean”
Claim · model-written summary
NaCl reduced root PAL activity.
- Taxon
- soybeanGlycine maxt0
- Treatment
- NaCl exposuree0
- Outcome
- PAL activitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PAL activity decreased, soluble and cell wall‐bound POD activities increased, and H 2 O 2 content significantly decreased after NaCl exposure.”
t0“soybean”
Claim · model-written summary
NaCl increased soluble and cell-wall-bound POD activities.
- Taxon
- soybeanGlycine maxt0
- Treatment
- NaCl exposuree0
- Outcome
- soluble and cell wall‐bound POD activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PAL activity decreased, soluble and cell wall‐bound POD activities increased, and H 2 O 2 content significantly decreased after NaCl exposure.”
t0“soybean”
Claim · model-written summary
NaCl significantly reduced root hydrogen peroxide content.
- Taxon
- soybeanGlycine maxt0
- Treatment
- NaCl exposuree0
- Outcome
- H 2 O 2 contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H 2 O 2 content significantly decreased after NaCl exposure.”
t0“soybean”
Claim · model-written summary
NaCl increased total phenolic and lignin contents in roots.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- rootse0
- Treatment
- NaCl‐treatede0
- Outcome
- total phenolic and lignin contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total phenolic and lignin contents and p ‐hydroxyphenyl (H) and syringyl (S) monomers of lignin increased in NaCl‐treated roots.”
t0“soybean”
Claim · model-written summary
NaCl increased p-hydroxyphenyl and syringyl lignin monomers in roots.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- rootse0
- Treatment
- NaCl‐treatede0
- Outcome
- p ‐hydroxyphenyl (H) and syringyl (S) monomers of lignine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“p ‐hydroxyphenyl (H) and syringyl (S) monomers of lignin increased in NaCl‐treated roots.”
t0“soybean”
Claim · model-written summary
The authors suggest that enhanced lignin production solidifies cell walls and restricts soybean root growth under NaCl.
- Taxon
- soybeanGlycine maxt0
- Treatment
- NaCle0
- Outcome
- root growthe0
- Qualifier
- enhanced lignin production that solidifies the cell walle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects caused by NaCl may be owing to the enhanced lignin production that solidifies the cell wall and restricts root growth.”
t0“soybean”
The same questions in other papers
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- no effect
- positive
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- negative
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See all 58 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.