Abstract
Salicylic acid (SA) is recognized as an endogenous regulator of plant metabolism, mainly involved in induction of systemic acquired resistance (SAR). Exogenous SA can also induce a SAR reaction and SAR gene expression. Excessive SAR‐related activity can be an overall cost to the plant in terms of energy and materials expended unnecessarily. Elicitation of plant defence responses might also block beneficial plant‐microbe interactions and result in negative effects on plant growth. The objective of this study was to investigate the effects of SA concentration (5, 1, 0.5, 0.1 and 0 m m ) on soybean seedling growth and nodulation by watering of soybean seedling roots or soaking of seedling leaves with SA solutions. It was found that 5 m m SA had negative effects on soybean seedling development, but other concentrations of SA did not affect the development of soybean seedlings. In addition, there were no negative effects on seedling development due to SA soaking of seedling leaves. Soybean seedling growth in sterile soil was reduced due to repressed nitrogen uptake following addition of 5 m m SA, indicating that some concentrations of SA can alter the N nutrition of seedlings. A model is presented that ties SA to nodule formation and plant growth.
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Claims 5
Claim · model-written summary
Root application of 5 m m SA negatively affected soybean seedling development.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- 5 m m SAe0
- Outcome
- soybean seedling developmente0
- Direction
- negativee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Seedlings”
e0“5 m m SA had negative effects on soybean seedling development”
Claim · model-written summary
Other SA concentrations did not affect soybean seedling development.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- other concentrations of SAe0
- Outcome
- development of soybean seedlingse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Seedlings”
e0“other concentrations of SA did not affect the development of soybean seedlings.”
Claim · model-written summary
Leaf soaking with SA did not negatively affect seedling development.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- SA soaking of seedling leavese0
- Outcome
- seedling developmente0
- Direction
- no negative effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Seedlings”
e0“there were no negative effects on seedling development due to SA soaking of seedling leaves.”
Claim · model-written summary
In sterile soil, 5 m m SA reduced soybean seedling growth.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- addition of 5 m m SAe0
- Outcome
- Soybean seedling growthe0
- Direction
- reducede0
- Setting
- sterile soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Seedlings”
e0“Soybean seedling growth in sterile soil was reduced due to repressed nitrogen uptake following addition of 5 m m SA”
Claim · model-written summary
In sterile soil, 5 m m SA repressed nitrogen uptake.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- addition of 5 m m SAe0
- Outcome
- nitrogen uptakee0
- Direction
- repressede0
- Setting
- sterile soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Seedlings”
e0“Soybean seedling growth in sterile soil was reduced due to repressed nitrogen uptake following addition of 5 m m SA”
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