Abstract
BACKGROUND: Carbon nano sol (CNS) can markedly affect the plant growth and development. However, few systematic analyses have been conducted on the underlying regulatory mechanisms in plants, including tobacco (Nicotiana tabacum L.). RESULTS: Integrated analyses of phenome, ionome, transcriptome, and metabolome were performed in this study to elucidate the physiological and molecular mechanisms underlying the CNS-promoting growth of tobacco plants. We found that 0.3% CNS, facilitating the shoot and root growth of tobacco plants, significantly increased shoot potassium concentrations. Antioxidant, metabolite, and phytohormone profiles showed that 0.3% CNS obviously reduced reactive oxygen species production and increased antioxidant enzyme activity and auxin accumulation. Comparative transcriptomics revealed that the GO and KEGG terms involving responses to oxidative stress, DNA binding, and photosynthesis were highly enriched in response to exogenous CNS application. Differential expression profiling showed that NtNPF7.3/NtNRT1.5, potentially involved in potassium/auxin transport, was significantly upregulated under the 0.3% CNS treatment. High-resolution metabolic fingerprints showed that 141 and 163 metabolites, some of which were proposed as growth regulators, were differentially accumulated in the roots and shoots under the 0.3% CNS treatment, respectively. CONCLUSIONS: Taken together, this study revealed the physiological and molecular mechanism underlying CNS-mediated growth promotion in tobacco plants, and these findings provide potential support for improving plant growth through the use of CNS.
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Claims 8
Claim · model-written summary
Treatment with 0.3% CNS facilitated shoot and root growth of tobacco plants.
- Taxon
- tobacco
Nicotiana tabacumt0 - Treatment
- 0.3% CNSe1
- Outcome
- shoot and root growthe1
- Direction
- facilitatinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“0.3% CNS, facilitating the shoot and root growth”
t0“tobacco plants”
Claim · model-written summary
0.3% CNS significantly increased shoot potassium concentrations in tobacco.
- Taxon
- tobaccoNicotiana tabacume1
- Organ / stage
- shoote1
- Treatment
- 0.3% CNSe1
- Outcome
- shoot potassium concentrationse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“0.3% CNS, facilitating the shoot and root growth of tobacco plants, significantly increased shoot potassium concentrations”
Claim · model-written summary
0.3% CNS obviously reduced reactive oxygen species production in tobacco.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- 0.3% CNSe1
- Outcome
- reactive oxygen species productione1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“0.3% CNS obviously reduced reactive oxygen species production”
t0“tobacco plants”
Claim · model-written summary
0.3% CNS increased antioxidant enzyme activity and auxin accumulation in tobacco.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- 0.3% CNSe1
- Outcome
- antioxidant enzyme activity and auxin accumulatione1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“0.3% CNS obviously reduced reactive oxygen species production and increased antioxidant enzyme activity and auxin accumulation”
t0“tobacco plants”
Claim · model-written summary
GO and KEGG terms involving responses to oxidative stress, DNA binding and photosynthesis were highly enriched in response to exogenous CNS application.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- exogenous CNS applicatione1
- Outcome
- GO and KEGG terms involving responses to oxidative stress, DNA binding, and photosynthesis were highly enrichede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the GO and KEGG terms involving responses to oxidative stress, DNA binding, and photosynthesis were highly enriched in response to exogenous CNS application”
t0“tobacco plants”
Claim · model-written summary
NtNPF7.3/NtNRT1.5, potentially involved in potassium/auxin transport, was significantly upregulated under 0.3% CNS treatment.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- 0.3% CNS treatmente1
- Gene
- NtNPF7.3/NtNRT1.5e1
- Outcome
- upregulatede1
- Direction
- upregulatede1
- Qualifier
- potentially involved in potassium/auxin transporte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“NtNPF7.3/NtNRT1.5, potentially involved in potassium/auxin transport, was significantly upregulated under the 0.3% CNS treatment”
t0“tobacco plants”
Claim · model-written summary
141 metabolites were differentially accumulated in the roots under 0.3% CNS treatment.
- Taxon
- tobaccoNicotiana tabacumt0
- Organ / stage
- rootse1
- Treatment
- 0.3% CNS treatmente1
- Outcome
- metabolites, some of which were proposed as growth regulators, were differentially accumulatede1
- Value
- 141e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“141 and 163 metabolites, some of which were proposed as growth regulators, were differentially accumulated in the roots and shoots under the 0.3% CNS treatment, respectively”
t0“tobacco plants”
Claim · model-written summary
163 metabolites were differentially accumulated in the shoots under 0.3% CNS treatment.
- Taxon
- tobaccoNicotiana tabacumt0
- Organ / stage
- shootse1
- Treatment
- 0.3% CNS treatmente1
- Outcome
- metabolites, some of which were proposed as growth regulators, were differentially accumulatede1
- Value
- 163e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“141 and 163 metabolites, some of which were proposed as growth regulators, were differentially accumulated in the roots and shoots under the 0.3% CNS treatment, respectively”
t0“tobacco plants”
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