Abstract
The influence of a wide range of CO 2 levels on the growth, morphogenesis, and secondary metabolite production in vitro was evaluated. Shoots of thyme ( Thymus vulgaris L.) and a spearmint–peppermint cross ( Mentha spicata × Mentha piperita ) were grown on MS medium with and without 3% sucrose under 350, 1500, 3000, 10,000, and 30,000 μL CO 2 /L for 8 weeks. Dichloromethane extracts from leafs were analyzed using GC-MS techniques. Prominent peaks were identified by comparison with known standards. Highest growth (i.e., fresh weight) and morphogenesis responses (i.e., leafs, shoots and roots) were obtained when shoots were grown under 10,000 μL CO 2 /L regardless of whether or not sucrose was included in the medium. Ultra-high CO 2 concentrations (3000 μL CO 2 /L) stimulated secondary metabolite production regardless of whether or not the medium contained sucrose. However, the combination of certain ultra-high CO 2 levels (e.g., 3000 to 10,000 μL CO 2 /L) and the presence of sucrose in the medium resulted in shoots producing the highest levels of secondary metabolites. These results suggest that in vitro photosynthesis, which is stimulated by ultrahigh CO 2 levels, may enhance secondary metabolite production.
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Claims 8
Claim · model-written summary
Thyme shoots grown under 10,000 μL CO2/L had the highest fresh weight and morphogenesis responses, with or without sucrose.
- Taxon
- thyme
.JPG?width=60)
Thymus vulgarise1 - Treatment
- 10,000 μL CO 2 /Le3
- Outcome
- growth (i.e., fresh weight) and morphogenesis responsese3
- Direction
- Higheste3
- Qualifier
- regardless of whether or not sucrose was included in the mediume3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e1“Shoots of thyme ( Thymus vulgaris L.)”
e3“Highest growth (i.e., fresh weight) and morphogenesis responses (i.e., leafs, shoots and roots) were obtained when shoots were grown under 10,000 μL CO 2 /L regardless of whether or not sucrose was included in the medium”
Claim · model-written summary
Spearmint–peppermint cross shoots grown under 10,000 μL CO2/L had the highest fresh weight and morphogenesis responses, with or without sucrose.
- Taxon
- spearmint–peppermint crosse2
- Treatment
- 10,000 μL CO 2 /Le3
- Outcome
- growth (i.e., fresh weight) and morphogenesis responsese3
- Direction
- Higheste3
- Qualifier
- regardless of whether or not sucrose was included in the mediume3
Not reportedComparator
Verbatim
e2“a spearmint–peppermint cross ( Mentha spicata × Mentha piperita )”
e3“Highest growth (i.e., fresh weight) and morphogenesis responses (i.e., leafs, shoots and roots) were obtained when shoots were grown under 10,000 μL CO 2 /L regardless of whether or not sucrose was included in the medium”
Claim · model-written summary
Ultra-high CO2 at 3000 μL CO2/L stimulated secondary metabolite production in thyme shoots, with or without sucrose.
- Taxon
- thymeThymus vulgarise1
- Treatment
- Ultra-high CO 2 concentrations (3000 μL CO 2 /L)e4
- Outcome
- secondary metabolite productione4
- Direction
- stimulatede4
- Qualifier
- regardless of whether or not the medium contained sucrosee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Shoots of thyme ( Thymus vulgaris L.)”
e4“Ultra-high CO 2 concentrations (3000 μL CO 2 /L) stimulated secondary metabolite production regardless of whether or not the medium contained sucrose”
Claim · model-written summary
Ultra-high CO2 at 3000 μL CO2/L stimulated secondary metabolite production in spearmint–peppermint cross shoots, with or without sucrose.
- Taxon
- spearmint–peppermint crosse2
- Treatment
- Ultra-high CO 2 concentrations (3000 μL CO 2 /L)e4
- Outcome
- secondary metabolite productione4
- Direction
- stimulatede4
- Qualifier
- regardless of whether or not the medium contained sucrosee4
Not reportedComparator
Verbatim
e2“a spearmint–peppermint cross ( Mentha spicata × Mentha piperita )”
e4“Ultra-high CO 2 concentrations (3000 μL CO 2 /L) stimulated secondary metabolite production regardless of whether or not the medium contained sucrose”
Claim · model-written summary
The combination of ultra-high CO2 (3000 to 10,000 μL CO2/L) with sucrose gave thyme shoots the highest secondary metabolite levels.
- Taxon
- thymeThymus vulgarise1
- Treatment
- combination of certain ultra-high CO 2 levels (e.g., 3000 to 10,000 μL CO 2 /L) and the presence of sucrose in the mediume5
- Outcome
- levels of secondary metabolitese5
- Direction
- higheste5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Shoots of thyme ( Thymus vulgaris L.)”
e5“the combination of certain ultra-high CO 2 levels (e.g., 3000 to 10,000 μL CO 2 /L) and the presence of sucrose in the medium resulted in shoots producing the highest levels of secondary metabolites”
Claim · model-written summary
The combination of ultra-high CO2 (3000 to 10,000 μL CO2/L) with sucrose gave spearmint–peppermint cross shoots the highest secondary metabolite levels.
- Taxon
- spearmint–peppermint crosse2
- Treatment
- combination of certain ultra-high CO 2 levels (e.g., 3000 to 10,000 μL CO 2 /L) and the presence of sucrose in the mediume5
- Outcome
- levels of secondary metabolitese5
- Direction
- higheste5
Not reportedComparator
Verbatim
e2“a spearmint–peppermint cross ( Mentha spicata × Mentha piperita )”
e5“the combination of certain ultra-high CO 2 levels (e.g., 3000 to 10,000 μL CO 2 /L) and the presence of sucrose in the medium resulted in shoots producing the highest levels of secondary metabolites”
Claim · model-written summary
In vitro photosynthesis stimulated by ultrahigh CO2 may enhance secondary metabolite production in thyme shoots.
- Taxon
- thymeThymus vulgarise1
- Outcome
- secondary metabolite productione6
- Qualifier
- in vitro photosynthesis, which is stimulated by ultrahigh CO 2 levelse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Shoots of thyme ( Thymus vulgaris L.)”
e6“in vitro photosynthesis, which is stimulated by ultrahigh CO 2 levels, may enhance secondary metabolite production”
Claim · model-written summary
In vitro photosynthesis stimulated by ultrahigh CO2 may enhance secondary metabolite production in spearmint–peppermint cross shoots.
Verbatim
e2“a spearmint–peppermint cross ( Mentha spicata × Mentha piperita )”
e6“in vitro photosynthesis, which is stimulated by ultrahigh CO 2 levels, may enhance secondary metabolite production”
The same questions in other papers
co2 · growth · Thymus vulgaris (thyme)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
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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.