Abstract
Dietary vegetables rich in bioactive compounds are major responsible for promoting human health. Herein, the effect of hydrogen peroxide (H2O2), an important signaling compound, on growth and quality of two hydroponic lettuce genotypes was investigated. The maximum enhancement of growth traits was shown in lettuce elicited with 10 mmol/L H2O2, while 40 mmol/L H2O2 significantly reduced above growth traits·H2O2 elicitation increased pigment contents and photosynthetic process, which consequently caused enhancements of phenolic compounds, ascorbic acid, glutathione, carotenoids, soluble sugars, free amino acids, soluble protein, minerals, and antioxidant capacity, while above alterations appeared in a genotype-dependent manner. The phenolic accumulation was correlated with improved activity of phenylalanine ammonia lyase (PAL) and expression levels of genes related to phenolic biosynthesis, including PAL, chalcone synthase, flavanone 3-hydroxylase, dihydroflavonol-4 reductase, and UDP-glucose: flavonoid 3-O-glucosyltransferase. Therefore, elicitation with H2O2 is a promising strategy to develop lettuce with high bioactive compounds and biomass.
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Claims 8
Claim · model-written summary
10 mmol/L H2O2 maximized lettuce growth traits.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- 10 mmol/L H2O2e0
- Outcome
- growth traitse0
- Direction
- maximum enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“lettuce”
e0“The maximum enhancement of growth traits was shown in lettuce elicited with 10 mmol/L H2O2”
Claim · model-written summary
40 mmol/L H2O2 significantly reduced lettuce growth traits.
- Taxon
- lettuceLactuca sativat0
- Treatment
- 40 mmol/L H2O2e0
- Outcome
- growth traitse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“lettuce”
e0“40 mmol/L H2O2 significantly reduced above growth traits”
Claim · model-written summary
H2O2 elicitation increased pigment contents and photosynthetic process in lettuce.
- Taxon
- lettuceLactuca sativat0
- Treatment
- H2O2 elicitatione0
- Outcome
- pigment contents and photosynthetic processe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“lettuce”
e0“H2O2 elicitation increased pigment contents and photosynthetic process”
Claim · model-written summary
H2O2 elicitation enhanced phenolic compounds, ascorbic acid, and glutathione in a genotype-dependent manner.
- Taxon
- lettuceLactuca sativat0
- Treatment
- H2O2 elicitatione0
- Outcome
- phenolic compounds, ascorbic acid, glutathionee0
- Direction
- enhancementse0
- Qualifier
- genotype-dependent mannere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“lettuce”
e0“H2O2 elicitation increased pigment contents and photosynthetic process, which consequently caused enhancements of phenolic compounds, ascorbic acid, glutathione, carotenoids, soluble sugars, free amino acids, soluble protein, minerals, and antioxidant capacity, while above alterations appeared in a genotype-dependent manner”
Claim · model-written summary
H2O2 elicitation enhanced carotenoids, soluble sugars, and free amino acids in a genotype-dependent manner.
- Taxon
- lettuceLactuca sativat0
- Treatment
- H2O2 elicitatione1
- Outcome
- carotenoids, soluble sugars, free amino acidse0
- Direction
- enhancementse0
- Qualifier
- genotype-dependent mannere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“lettuce”
e0“enhancements of phenolic compounds, ascorbic acid, glutathione, carotenoids, soluble sugars, free amino acids, soluble protein, minerals, and antioxidant capacity, while above alterations appeared in a genotype-dependent manner”
e1“H2O2 elicitation increased pigment contents”
Claim · model-written summary
H2O2 elicitation enhanced soluble protein, minerals, and antioxidant capacity in a genotype-dependent manner.
- Taxon
- lettuceLactuca sativat0
- Treatment
- H2O2 elicitatione1
- Outcome
- soluble protein, minerals, and antioxidant capacitye0
- Direction
- enhancementse0
- Qualifier
- genotype-dependent mannere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“lettuce”
e0“enhancements of phenolic compounds, ascorbic acid, glutathione, carotenoids, soluble sugars, free amino acids, soluble protein, minerals, and antioxidant capacity, while above alterations appeared in a genotype-dependent manner”
e1“H2O2 elicitation increased pigment contents”
Claim · model-written summary
Phenolic accumulation correlated with PAL activity and expression of phenolic biosynthesis genes.
- Taxon
- lettuceLactuca sativat0
- Gene
- phenylalanine ammonia lyase (PAL)e0
- Outcome
- phenolic accumulatione0
- Direction
- improvede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“lettuce”
e0“The phenolic accumulation was correlated with improved activity of phenylalanine ammonia lyase (PAL) and expression levels of genes related to phenolic biosynthesis, including PAL, chalcone synthase, flavanone 3-hydroxylase, dihydroflavonol-4 reductase, and UDP-glucose: flavonoid 3-O-glucosyltransferase”
Claim · model-written summary
The authors recommend H2O2 elicitation to develop lettuce with high bioactive compounds and biomass.
- Taxon
- lettuceLactuca sativat0
- Treatment
- elicitation with H2O2e0
- Outcome
- develop lettuce with high bioactive compounds and biomasse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“lettuce”
e0“elicitation with H2O2 is a promising strategy to develop lettuce with high bioactive compounds and biomass”
The same questions in other papers
hydrogen peroxide · physiology: pigments · Lactuca sativa (garden lettuce)Positive and negative results
1 in the opposite direction
- no effect
hydrogen peroxide · physiology: photosynthesis · Lactuca sativa (garden lettuce)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
hydrogen peroxide · growth · Lactuca sativa (garden lettuce)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
1 paper more in this group
See all 5 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.