Abstract
The effects of exogenous calcium (Ca2+) on root growth and lignification-related parameters – phenylalanine ammonia-lyase (PAL) and peroxidases (POD) activities, hydrogen peroxide (H2O2) and lignin contents – in roots of NaCl-stressed soybean seedlings were analyzed. Three-day-old seedlings were cultivated in half-strength Hoagland's solution (pH 6.0) with or without 5 mM calcium nitrate [Ca(NO3)2] and 50 to 200 mM sodium chloride (NaCl) in a growth chamber (25°C, 12/12 h light/dark photoperiod, irradiance of 280 μmol m−2 s−1) for 24 h. In general, results showed that the absence of Ca2+ reduced root growth and increased lignification of soybean seedlings grown in NaCl-free nutrient solution. NaCl reduced the root growth and all lignification-related parameters. Root growth, PAL and POD activities and hydrogen peroxide (H2O2) contents were more affected after NaCl treatments without Ca2+ in the nutrient solution. At 5 mM, Ca2+ did not alleviate the deleterious effects of NaCl on lignification-related parameters.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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
Claim · model-written summary
Absence of Ca2+ reduced root growth without NaCl.
- Taxon
- soybean seedlings
Glycine maxe0 - Treatment
- absence of Ca2+e0
- Outcome
- root growthe0
- Direction
- reducede0
- Qualifier
- NaCl-free nutrient solutione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the absence of Ca2+ reduced root growth and increased lignification of soybean seedlings grown in NaCl-free nutrient solution”
Claim · model-written summary
Absence of Ca2+ increased soybean root lignification without NaCl.
- Taxon
- soybean seedlingsGlycine maxe0
- Treatment
- absence of Ca2+e0
- Outcome
- lignificatione0
- Direction
- increasede0
- Qualifier
- NaCl-free nutrient solutione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the absence of Ca2+ reduced root growth and increased lignification of soybean seedlings grown in NaCl-free nutrient solution”
Claim · model-written summary
NaCl reduced soybean root growth.
- Taxon
- SOYBEANGlycine maxt0
- Treatment
- NaCle0
- Outcome
- root growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl reduced the root growth and all lignification-related parameters”
t0“SOYBEAN”
Claim · model-written summary
NaCl reduced the measured lignification-related parameters.
- Taxon
- SOYBEANGlycine maxt0
- Treatment
- NaCle0
- Outcome
- all lignification-related parameterse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl reduced the root growth and all lignification-related parameters”
t0“SOYBEAN”
Claim · model-written summary
Without Ca2+, NaCl affected root growth more strongly.
- Taxon
- SOYBEANGlycine maxt0
- Treatment
- NaCl treatments without Ca2+e0
- Outcome
- Root growthe0
- Direction
- more affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root growth, PAL and POD activities and hydrogen peroxide (H2O2) contents were more affected after NaCl treatments without Ca2+ in the nutrient solution”
t0“SOYBEAN”
Claim · model-written summary
Without Ca2+, NaCl affected PAL and POD activity more strongly.
- Taxon
- SOYBEANGlycine maxt0
- Treatment
- NaCl treatments without Ca2+e0
- Outcome
- PAL and POD activitiese0
- Direction
- more affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root growth, PAL and POD activities and hydrogen peroxide (H2O2) contents were more affected after NaCl treatments without Ca2+ in the nutrient solution”
t0“SOYBEAN”
Claim · model-written summary
Without Ca2+, NaCl affected hydrogen peroxide content more strongly.
- Taxon
- SOYBEANGlycine maxt0
- Treatment
- NaCl treatments without Ca2+e0
- Outcome
- hydrogen peroxide (H2O2) contentse0
- Direction
- more affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root growth, PAL and POD activities and hydrogen peroxide (H2O2) contents were more affected after NaCl treatments without Ca2+ in the nutrient solution”
t0“SOYBEAN”
Claim · model-written summary
At 5 mM, Ca2+ did not alleviate NaCl effects on lignification-related parameters.
- Taxon
- SOYBEANGlycine maxt0
- Treatment
- 5 mM, Ca2+e0
- Outcome
- lignification-related parameterse0
- Direction
- did not alleviatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 5 mM, Ca2+ did not alleviate the deleterious effects of NaCl on lignification-related parameters”
t0“SOYBEAN”
The same questions in other papers
sodium chloride · growth · Glycine max (soybean)Results differ
46 papers in the same direction as this paper · 11 in the opposite direction
- negative
- negative
- positive
54 papers more in this group
See all 58 papers →calcium(2+) · physiology: oxidative · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- positive
calcium(2+) · growth · Glycine max (soybean)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- positive
- positive
calcium(2+) · physiology: antioxidant enzymes · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
This paper is about lacking the nutrient, so it counts the other way round here.
- 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.