Abstract
Seedlings of two chemotypes of mint ( Mentha spicata L.), i.e. the piperitone and piperitenone oxide rich wild mint (chemotype I) and the carvone and dihydrocarvone rich spearmint (chemotype II), were grown to maturity in the field under ambient or ambient plus supplemental UV-B radiation, simulating a 15% ozone depletion over Patras (38.3°N, 29.1°E). Enhanced UV-B radiation had no effect on total stem length, photochemical efficiency of PS II, chlorophyll content, UV-B absorbing capacity of epicuticular and internal compounds, photosynthetic capacity at 5% CO2 and relative water content of both chemotypes. However, specific leaf mass in chemotype II, and leaf number in chemotype I were significantly increased under UV-B supplementation, while total leaf area remained unaffected. Dry mass accumulation measured at plant harvest showed a slight, non-significant trend for increased above- and below-ground biomass in both chemotypes, but a particularly significant increase in the biomass allocated to inflorescences in chemotype II was found. Seed yield was significantly improved by supplemental UV-B radiation in both chemotypes, but, again, chemotype II was particularly responsive, increasing the number of seeds by 100%. We conclude that the aromatic species M. spicata is not only resistant to enhanced UV-B radiation, but some chemotypes may be selectively benefited through increased reproductive effort.
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Claims 11
Claim · model-written summary
Enhanced UV-B radiation had no effect on total stem length, photochemical efficiency of PS II and chlorophyll content in two Mentha spicata chemotypes.
- Taxon
- Mentha spicata
Mentha spicatae1 - Material
- two chemotypese1
- Treatment
- Enhanced UV-B radiatione3
- Outcome
- total stem length, photochemical efficiency of PS II, chlorophyll contente3
- Direction
- no effecte3
- Comparator
- ambiente2
- Setting
- in the fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seedlings of two chemotypes of mint ( Mentha spicata L.)”
e2“were grown to maturity in the field under ambient or ambient plus supplemental UV-B radiation”
e3“Enhanced UV-B radiation had no effect on total stem length, photochemical efficiency of PS II, chlorophyll content, UV-B absorbing capacity of epicuticular and internal compounds, photosynthetic capacity at 5% CO2 and relative water content of both chemotypes”
Claim · model-written summary
Enhanced UV-B radiation had no effect on UV-B absorbing capacity, photosynthetic capacity at 5% CO2 and relative water content in two Mentha spicata chemotypes.
- Taxon
- Mentha spicataMentha spicatae1
- Material
- two chemotypese1
- Treatment
- Enhanced UV-B radiatione3
- Outcome
- UV-B absorbing capacity of epicuticular and internal compounds, photosynthetic capacity at 5% CO2 and relative water contente3
- Direction
- no effecte3
- Comparator
- ambiente2
- Setting
- in the fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seedlings of two chemotypes of mint ( Mentha spicata L.)”
e2“were grown to maturity in the field under ambient or ambient plus supplemental UV-B radiation”
e3“Enhanced UV-B radiation had no effect on total stem length, photochemical efficiency of PS II, chlorophyll content, UV-B absorbing capacity of epicuticular and internal compounds, photosynthetic capacity at 5% CO2 and relative water content of both chemotypes”
Claim · model-written summary
Enhanced UV-B radiation left total leaf area unaffected in Mentha spicata.
- Taxon
- Mentha spicataMentha spicatae1
- Treatment
- Enhanced UV-B radiatione3
- Outcome
- total leaf areae4
- Direction
- remained unaffectede4
- Comparator
- ambiente2
- Setting
- in the fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seedlings of two chemotypes of mint ( Mentha spicata L.)”
e2“were grown to maturity in the field under ambient or ambient plus supplemental UV-B radiation”
e3“Enhanced UV-B radiation had no effect on total stem length”
e4“while total leaf area remained unaffected”
Claim · model-written summary
Specific leaf mass was significantly increased under UV-B supplementation in chemotype II of Mentha spicata.
- Taxon
- Mentha spicataMentha spicatae1
- Material
- chemotype IIe5
- Treatment
- UV-B supplementatione5
- Outcome
- specific leaf masse5
- Direction
- significantly increasede5
- Comparator
- ambiente2
- Setting
- in the fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seedlings of two chemotypes of mint ( Mentha spicata L.)”
e2“were grown to maturity in the field under ambient or ambient plus supplemental UV-B radiation”
e5“specific leaf mass in chemotype II, and leaf number in chemotype I were significantly increased under UV-B supplementation”
Claim · model-written summary
Leaf number was significantly increased under UV-B supplementation in chemotype I of Mentha spicata.
- Taxon
- Mentha spicataMentha spicatae1
- Material
- chemotype Ie5
- Treatment
- UV-B supplementatione5
- Outcome
- leaf numbere5
- Direction
- significantly increasede5
- Comparator
- ambiente2
- Setting
- in the fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seedlings of two chemotypes of mint ( Mentha spicata L.)”
e2“were grown to maturity in the field under ambient or ambient plus supplemental UV-B radiation”
e5“specific leaf mass in chemotype II, and leaf number in chemotype I were significantly increased under UV-B supplementation”
Claim · model-written summary
Above- and below-ground biomass showed a slight, non-significant trend to increase under enhanced UV-B radiation in both chemotypes of Mentha spicata.
- Taxon
- Mentha spicataMentha spicatae1
- Treatment
- Enhanced UV-B radiatione3
- Outcome
- above- and below-ground biomasse6
- Direction
- increasede6
- Qualifier
- slight, non-significant trende6
- Comparator
- ambiente2
- Setting
- in the fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seedlings of two chemotypes of mint ( Mentha spicata L.)”
e2“were grown to maturity in the field under ambient or ambient plus supplemental UV-B radiation”
e3“Enhanced UV-B radiation had no effect on total stem length”
e6“Dry mass accumulation measured at plant harvest showed a slight, non-significant trend for increased above- and below-ground biomass in both chemotypes”
Claim · model-written summary
Biomass allocated to inflorescences was significantly increased by supplemental UV-B radiation in chemotype II of Mentha spicata.
- Taxon
- Mentha spicataMentha spicatae1
- Material
- chemotype IIe7
- Treatment
- supplemental UV-B radiatione0
- Outcome
- biomass allocated to inflorescencese7
- Direction
- increasee7
- Comparator
- ambiente2
- Setting
- in the fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seedlings of two chemotypes of mint ( Mentha spicata L.)”
e2“were grown to maturity in the field under ambient or ambient plus supplemental UV-B radiation”
e7“a particularly significant increase in the biomass allocated to inflorescences in chemotype II was found”
e0“Seed yield was significantly improved by supplemental UV-B radiation in both chemotypes”
Claim · model-written summary
Seed yield was significantly improved by supplemental UV-B radiation in both chemotypes of Mentha spicata.
- Taxon
- Mentha spicataMentha spicatae1
- Treatment
- supplemental UV-B radiatione0
- Outcome
- Seed yielde0
- Direction
- significantly improvede0
- Comparator
- ambiente2
- Setting
- in the fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seedlings of two chemotypes of mint ( Mentha spicata L.)”
e2“were grown to maturity in the field under ambient or ambient plus supplemental UV-B radiation”
e0“Seed yield was significantly improved by supplemental UV-B radiation in both chemotypes”
Claim · model-written summary
Chemotype II of Mentha spicata increased its number of seeds by 100% under supplemental UV-B radiation.
- Taxon
- Mentha spicataMentha spicatae1
- Material
- chemotype IIe3
- Treatment
- supplemental UV-B radiatione0
- Outcome
- number of seedse3
- Direction
- increasinge3
- Value
- 100%e3
- Comparator
- ambiente2
- Setting
- in the fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seedlings of two chemotypes of mint ( Mentha spicata L.)”
e2“were grown to maturity in the field under ambient or ambient plus supplemental UV-B radiation”
e0“Seed yield was significantly improved by supplemental UV-B radiation in both chemotypes”
e3“but, again, chemotype II was particularly responsive, increasing the number of seeds by 100%”
Claim · model-written summary
Mentha spicata is resistant to enhanced UV-B radiation.
- Taxon
- M. spicataMentha spicatae0
- Outcome
- resistant to enhanced UV-B radiatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the aromatic species M. spicata is not only resistant to enhanced UV-B radiation”
Claim · model-written summary
Some Mentha spicata chemotypes may be selectively benefited by enhanced UV-B radiation through increased reproductive effort.
- Taxon
- M. spicataMentha spicatae0
- Outcome
- reproductive efforte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the aromatic species M. spicata is not only resistant to enhanced UV-B radiation”
e1“some chemotypes may be selectively benefited through increased reproductive effort”
The same questions in other papers
uv · growth · Mentha spicata (spearmint)Positive and negative results
1 in the opposite direction
- positive
uv · yield · Mentha spicata (spearmint)Positive and negative results
1 in the opposite direction
- negative
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.