Abstract
This paper evaluates the combined effect of biostimulant and light quality on bioactive compound production and seedling growth of soybean (Glycine max L. Merrill) plants. Germinated seeds pre-treated with different concentrations (0.01%, 0.05%, 0.5%) of an amino acid-based biostimulant were grown for 4 days at the dark (D), white fluorescent light (FL), full-spectrum LED (FS), and red-blue (RB) light. Potential changes in the antioxidant content of sprouts were evaluated. Part of the sprouts was left to grow at FL, FS, and RB light regimes for 24 days to assess modifications in plants’ anatomical and physiological traits during the early developmental plant stage. The seed pre-treatment with all biostimulant concentrations significantly increased sprout antioxidant compounds, sugar, and protein content compared to the control (seeds treated with H2O). The positive effect on bioactive compounds was improved under FS and RB compared to D and FL light regimes. At the seedling stage, 0.05% was the only concentration of biostimulant effective in increasing the specific leaf area (SLA) and photosynthetic efficiency. Compared to FL, the growth under FS and RB light regimes significantly enhanced the beneficial effect of 0.05% on SLA and photosynthesis. This concentration led to leaf thickness increase and shoot/root ratio reduction. Our findings demonstrated that seed pre-treatment with proper biostimulant concentration in combination with specific light regimes during plant development may represent a useful means to modify the bioactive compound amount and leaf structural and photosynthetic traits.
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Claims 7
Claim · model-written summary
All biostimulant concentrations significantly increased sprout antioxidant compounds, sugar and protein content compared with water-treated seeds.
- Taxon
- soybean (Glycine max L. Merrill) plants
Glycine maxe0 - Organ / stage
- sproute1
- Treatment
- seed pre-treatment with all biostimulant concentrationse1
- Outcome
- sprout antioxidant compounds, sugar, and protein contente1
- Direction
- increasede1
- Comparator
- control (seeds treated with H2O)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean (Glycine max L. Merrill) plants”
e1“The seed pre-treatment with all biostimulant concentrations significantly increased sprout antioxidant compounds, sugar, and protein content compared to the control (seeds treated with H2O)”
Claim · model-written summary
The positive effect of biostimulant on bioactive compounds was improved under FS and RB light compared with D and FL light.
- Taxon
- soybean (Glycine max L. Merrill) plantsGlycine maxe0
- Treatment
- FS and RBe1
- Outcome
- effect on bioactive compoundse1
- Direction
- improvede1
- Comparator
- D and FL light regimese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean (Glycine max L. Merrill) plants”
e1“The positive effect on bioactive compounds was improved under FS and RB compared to D and FL light regimes”
Claim · model-written summary
At the seedling stage 0.05% biostimulant was the only concentration effective in increasing specific leaf area and photosynthetic efficiency.
- Taxon
- soybean (Glycine max L. Merrill) plantsGlycine maxe0
- Treatment
- 0.05%e1
- Outcome
- specific leaf area (SLA) and photosynthetic efficiencye1
- Direction
- increasinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean (Glycine max L. Merrill) plants”
e1“At the seedling stage, 0.05% was the only concentration of biostimulant effective in increasing the specific leaf area (SLA) and photosynthetic efficiency”
Claim · model-written summary
FS and RB light significantly enhanced the beneficial effect of 0.05% biostimulant on SLA and photosynthesis compared with FL.
- Taxon
- soybean (Glycine max L. Merrill) plantsGlycine maxe0
- Treatment
- FS and RB light regimese1
- Outcome
- beneficial effect of 0.05% on SLA and photosynthesise1
- Direction
- enhancede1
- Comparator
- FLe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean (Glycine max L. Merrill) plants”
e1“Compared to FL, the growth under FS and RB light regimes significantly enhanced the beneficial effect of 0.05% on SLA and photosynthesis”
Claim · model-written summary
The 0.05% biostimulant concentration led to an increase in leaf thickness.
- Taxon
- soybean (Glycine max L. Merrill) plantsGlycine maxe0
- Treatment
- 0.05%e1
- Outcome
- leaf thicknesse2
- Direction
- increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean (Glycine max L. Merrill) plants”
e1“At the seedling stage, 0.05% was the only concentration of biostimulant effective in increasing the specific leaf area (SLA) and photosynthetic efficiency”
e2“This concentration led to leaf thickness increase and shoot/root ratio reduction”
Claim · model-written summary
The 0.05% biostimulant concentration led to a reduction in shoot/root ratio.
- Taxon
- soybean (Glycine max L. Merrill) plantsGlycine maxe0
- Treatment
- 0.05%e1
- Outcome
- shoot/root ratioe2
- Direction
- reductione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean (Glycine max L. Merrill) plants”
e1“At the seedling stage, 0.05% was the only concentration of biostimulant effective in increasing the specific leaf area (SLA) and photosynthetic efficiency”
e2“This concentration led to leaf thickness increase and shoot/root ratio reduction”
Claim · model-written summary
The authors conclude that seed pre-treatment with a proper biostimulant concentration plus specific light regimes may modify bioactive compound amount and leaf structural and photosynthetic traits.
- Taxon
- soybean (Glycine max L. Merrill) plantsGlycine maxe0
- Outcome
- modify the bioactive compound amount and leaf structural and photosynthetic traitse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean (Glycine max L. Merrill) plants”
e1“may represent a useful means to modify the bioactive compound amount and leaf structural and photosynthetic traits”
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