Abstract
The effects of CO2 pretreatment before cold storage on tomato quality were investigated using physicochemical and transcriptome changes. Harvested tomatoes were treated with 30% or 60% CO2 for 3 h before storage at 4 °C for 14 d (cold storage), followed by transfer to 20 °C for 8 d (ambient conditions). The CO2-treated fruits were firmer with a better appearance than untreated fruits, even after being transferred from 4 °C storage to 20 °C for 8 d. CO2 pretreatment coupled with cold storage synergistically delayed tomato ripening by reducing respiration and lowering lycopene production. The tomatoes treated with 30% and 60% CO2 had fewer pits than untreated fruits after cold storage, even after being transferred to ambient conditions. Moreover, the 60% CO2 treatment significantly suppressed the decay rate. Transcriptome and metabolome functional enrichment analyses commonly showed the involvement of CO2-responsive genes or metabolites in sucrose and starch metabolism, as well as biosynthesis of secondary metabolites—in particular, glycolysis reduction. The most frequently detected domain was the ethylene-responsive factor. These results indicate that altered ethylene biosynthesis and ethylene signaling, via ethylene-responsive transcription factors and respiration-related pathways, appear to control CO2-induced fruit quality.
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Claims 10
Claim · model-written summary
CO2-treated tomatoes remained firmer and had better appearance than untreated fruit after cold storage and transfer to ambient temperature.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- CO2-treatede0
- Outcome
- firmer with a better appearancee0
- Direction
- firmere0
- Qualifier
- after being transferred from 4 °C storage to 20 °C for 8 de0
- Comparator
- untreated fruitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CO2-treated fruits were firmer with a better appearance than untreated fruits, even after being transferred from 4 °C storage to 20 °C for 8 d.”
t0“Tomato”
Claim · model-written summary
CO2 pretreatment with cold storage delayed tomato ripening.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- CO2 pretreatment coupled with cold storagee0
- Outcome
- tomato ripeninge0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO2 pretreatment coupled with cold storage synergistically delayed tomato ripening by reducing respiration and lowering lycopene production.”
t0“Tomato”
Claim · model-written summary
CO2 pretreatment with cold storage reduced tomato respiration.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- CO2 pretreatment coupled with cold storagee0
- Outcome
- respiratione0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO2 pretreatment coupled with cold storage synergistically delayed tomato ripening by reducing respiration and lowering lycopene production.”
t0“Tomato”
Claim · model-written summary
CO2 pretreatment with cold storage lowered tomato lycopene production.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- CO2 pretreatment coupled with cold storagee0
- Outcome
- lycopene productione0
- Direction
- loweringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO2 pretreatment coupled with cold storage synergistically delayed tomato ripening by reducing respiration and lowering lycopene production.”
t0“Tomato”
Claim · model-written summary
Both 30% and 60% CO2 pretreatments produced fewer pits than untreated tomato fruit after storage.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- 30% and 60% CO2e0
- Outcome
- pitse0
- Direction
- fewere0
- Qualifier
- after cold storage, even after being transferred to ambient conditionse0
- Comparator
- untreated fruitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tomatoes treated with 30% and 60% CO2 had fewer pits than untreated fruits after cold storage, even after being transferred to ambient conditions.”
Claim · model-written summary
The 60% CO2 treatment significantly suppressed tomato decay rate.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- 60% CO2 treatmente0
- Outcome
- decay ratee0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 60% CO2 treatment significantly suppressed the decay rate.”
t0“Tomato”
Claim · model-written summary
Functional enrichment implicated CO2-responsive genes or metabolites in sucrose and starch metabolism and secondary metabolite biosynthesis.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- involvement of CO2-responsive genes or metabolites in sucrose and starch metabolism, as well as biosynthesis of secondary metabolitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transcriptome and metabolome functional enrichment analyses commonly showed the involvement of CO2-responsive genes or metabolites in sucrose and starch metabolism, as well as biosynthesis of secondary metabolites—in particular, glycolysis reduction.”
t0“Tomato”
Claim · model-written summary
Functional enrichment indicated a reduction in glycolysis under CO2 treatment.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- glycolysis reductione0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in particular, glycolysis reduction.”
t0“Tomato”
Claim · model-written summary
The ethylene-responsive factor was the most frequently detected domain.
- Taxon
- TomatoSolanum lycopersicumt0
- Gene
- ethylene-responsive factore0
- Outcome
- most frequently detected domaine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most frequently detected domain was the ethylene-responsive factor.”
t0“Tomato”
Claim · model-written summary
The authors propose altered ethylene biosynthesis, signaling and respiration-related pathways as controls of CO2-induced fruit quality.
- Taxon
- TomatoSolanum lycopersicumt0
- Gene
- ethylene-responsive transcription factorse0
- Outcome
- CO2-induced fruit qualitye0
- Qualifier
- respiration-related pathwayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“altered ethylene biosynthesis and ethylene signaling, via ethylene-responsive transcription factors and respiration-related pathways, appear to control CO2-induced fruit quality.”
t0“Tomato”
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