Abstract
Selenium and boron can alleviate lead (Pb) toxicity in plants, but their stress resistance mechanisms in tobacco remain unclear. The aim of this study was to investigate the effects of Se/B application on lead-induced oxidative stress, subcellular distribution, cell wall properties, and Pb accumulation. Additionally, a comprehensive analysis of transcriptomics and metabolomics data was conducted. Under Pb stress, the combined application of exogenous addition of Se, B and Se + B to a hydroponic system led to an increase in leaf biomass, promoted photosynthesis, increased antioxidant enzyme activity in tobacco, and significantly reduced the accumulation of Pb in the shoots of tobacco by downregulating the gene expression of the ABC transporter and upregulating the expression of aquaporin (AQP). Additionally, the application of Se and B increased the activity of the phenylpropanoid and glutathione metabolism pathways, promoting the synthesis of secondary metabolites such as coumarin, chlorogenic acid, ferulaldehyde, and (5-l-glutamyl)-l-amino acids. This, in turn, increased the tolerance of tobacco plants to Pb stress. Overall, our research findings provide new theoretical evidence regarding the roles of Se and B in alleviating Pb accumulation and offer potential strategies for the use of Se and B in the remediation of Pb-contaminated soils in agricultural production.
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 10
Claim · model-written summary
Se and B application increased tobacco leaf biomass under Pb stress
- Taxon
- tobacco
Nicotiana tabacume0 - Organ / stage
- leafe0
- Treatment
- exogenous addition of Se, B and Se + Be0
- Outcome
- leaf biomasse0
- Direction
- increasee0
- Qualifier
- Under Pb stresse0
- Setting
- hydroponic systeme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under Pb stress, the combined application of exogenous addition of Se, B and Se + B to a hydroponic system led to an increase in leaf biomass, promoted photosynthesis, increased antioxidant enzyme activity in tobacco, and significantly reduced the accumulation of Pb in the shoots of tobacco by downregulating the gene expression of the ABC transporter and upregulating the expression of aquaporin (AQP)”
Claim · model-written summary
Se and B application promoted photosynthesis of tobacco under Pb stress
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- exogenous addition of Se, B and Se + Be0
- Outcome
- photosynthesise0
- Direction
- promotede0
- Qualifier
- Under Pb stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under Pb stress, the combined application of exogenous addition of Se, B and Se + B to a hydroponic system led to an increase in leaf biomass, promoted photosynthesis, increased antioxidant enzyme activity in tobacco, and significantly reduced the accumulation of Pb in the shoots of tobacco by downregulating the gene expression of the ABC transporter and upregulating the expression of aquaporin (AQP)”
Claim · model-written summary
Se and B application increased antioxidant enzyme activity in tobacco under Pb stress
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- exogenous addition of Se, B and Se + Be0
- Outcome
- antioxidant enzyme activitye0
- Direction
- increasede0
- Qualifier
- Under Pb stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under Pb stress, the combined application of exogenous addition of Se, B and Se + B to a hydroponic system led to an increase in leaf biomass, promoted photosynthesis, increased antioxidant enzyme activity in tobacco, and significantly reduced the accumulation of Pb in the shoots of tobacco by downregulating the gene expression of the ABC transporter and upregulating the expression of aquaporin (AQP)”
Claim · model-written summary
Se and B application significantly reduced Pb accumulation in tobacco shoots
- Taxon
- tobaccoNicotiana tabacume0
- Organ / stage
- shootse0
- Treatment
- exogenous addition of Se, B and Se + Be0
- Outcome
- accumulation of Pb in the shootse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under Pb stress, the combined application of exogenous addition of Se, B and Se + B to a hydroponic system led to an increase in leaf biomass, promoted photosynthesis, increased antioxidant enzyme activity in tobacco, and significantly reduced the accumulation of Pb in the shoots of tobacco by downregulating the gene expression of the ABC transporter and upregulating the expression of aquaporin (AQP)”
Claim · model-written summary
Se and B application downregulated the gene expression of the ABC transporter in tobacco
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- exogenous addition of Se, B and Se + Be0
- Gene
- ABC transportere0
- Outcome
- gene expressione0
- Direction
- downregulatinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under Pb stress, the combined application of exogenous addition of Se, B and Se + B to a hydroponic system led to an increase in leaf biomass, promoted photosynthesis, increased antioxidant enzyme activity in tobacco, and significantly reduced the accumulation of Pb in the shoots of tobacco by downregulating the gene expression of the ABC transporter and upregulating the expression of aquaporin (AQP)”
Claim · model-written summary
Se and B application upregulated the expression of aquaporin (AQP) in tobacco
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- exogenous addition of Se, B and Se + Be0
- Gene
- aquaporin (AQP)e0
- Outcome
- expressione0
- Direction
- upregulatinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under Pb stress, the combined application of exogenous addition of Se, B and Se + B to a hydroponic system led to an increase in leaf biomass, promoted photosynthesis, increased antioxidant enzyme activity in tobacco, and significantly reduced the accumulation of Pb in the shoots of tobacco by downregulating the gene expression of the ABC transporter and upregulating the expression of aquaporin (AQP)”
Claim · model-written summary
Se and B application increased the activity of the phenylpropanoid and glutathione metabolism pathways in tobacco
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- the application of Se and Be1
- Outcome
- activity of the phenylpropanoid and glutathione metabolism pathwayse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under Pb stress, the combined application of exogenous addition of Se, B and Se + B to a hydroponic system led to an increase in leaf biomass, promoted photosynthesis, increased antioxidant enzyme activity in tobacco, and significantly reduced the accumulation of Pb in the shoots of tobacco by downregulating the gene expression of the ABC transporter and upregulating the expression of aquaporin (AQP)”
e1“Additionally, the application of Se and B increased the activity of the phenylpropanoid and glutathione metabolism pathways, promoting the synthesis of secondary metabolites such as coumarin, chlorogenic acid, ferulaldehyde, and (5-l-glutamyl)-l-amino acids”
Claim · model-written summary
Se and B application promoted the synthesis of coumarin, chlorogenic acid and ferulaldehyde in tobacco
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- the application of Se and Be1
- Outcome
- promoting the synthesis of secondary metabolitese1
- Direction
- promotinge1
- Qualifier
- such as coumarin, chlorogenic acid, ferulaldehydee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under Pb stress, the combined application of exogenous addition of Se, B and Se + B to a hydroponic system led to an increase in leaf biomass, promoted photosynthesis, increased antioxidant enzyme activity in tobacco, and significantly reduced the accumulation of Pb in the shoots of tobacco by downregulating the gene expression of the ABC transporter and upregulating the expression of aquaporin (AQP)”
e1“Additionally, the application of Se and B increased the activity of the phenylpropanoid and glutathione metabolism pathways, promoting the synthesis of secondary metabolites such as coumarin, chlorogenic acid, ferulaldehyde, and (5-l-glutamyl)-l-amino acids”
Claim · model-written summary
Se and B application promoted the synthesis of (5-l-glutamyl)-l-amino acids in tobacco
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- the application of Se and Be1
- Outcome
- promoting the synthesis of secondary metabolitese1
- Direction
- promotinge1
- Qualifier
- (5-l-glutamyl)-l-amino acidse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under Pb stress, the combined application of exogenous addition of Se, B and Se + B to a hydroponic system led to an increase in leaf biomass, promoted photosynthesis, increased antioxidant enzyme activity in tobacco, and significantly reduced the accumulation of Pb in the shoots of tobacco by downregulating the gene expression of the ABC transporter and upregulating the expression of aquaporin (AQP)”
e1“Additionally, the application of Se and B increased the activity of the phenylpropanoid and glutathione metabolism pathways, promoting the synthesis of secondary metabolites such as coumarin, chlorogenic acid, ferulaldehyde, and (5-l-glutamyl)-l-amino acids”
Claim · model-written summary
Increased synthesis of secondary metabolites increased tobacco tolerance to Pb stress
- Taxon
- tobaccoNicotiana tabacume2
- Treatment
- Pb stresse2
- Outcome
- tolerancee2
- Direction
- increasede2
- Qualifier
- promoting the synthesis of secondary metabolitese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Additionally, the application of Se and B increased the activity of the phenylpropanoid and glutathione metabolism pathways, promoting the synthesis of secondary metabolites such as coumarin, chlorogenic acid, ferulaldehyde, and (5-l-glutamyl)-l-amino acids”
e2“This, in turn, increased the tolerance of tobacco plants to Pb stress”
The same questions in other papers
selenium atom · quality: phytochemicals · Nicotiana tabacum (tobacco)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
selenium atom · soil: biology · Nicotiana tabacum (tobacco)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
selenium atom · physiology: photosynthesis · Nicotiana tabacum (tobacco)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →selenium atom · growth · Nicotiana tabacum (tobacco)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →selenium atom · molecular: metabolites · Nicotiana tabacum (tobacco)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.