Abstract
Photosynthetic light-response curves of mature leaves of Sarracenia alata were generated and characterized using a custom built chamber (2.79 L) capable of accommodating whole leaves, or pitchers, coupled to a LI-COR 6400XT Portable Photosynthesis System. In addition to generating light-response curves, chlorophyll content, leaf area, and dry mass measurements were obtained for each pitcher. Gas-exchange variables from the light-response curves are reported on a leaf area and dry mass basis. Calculated light-saturated photosynthesis was found to be 2.09 µmol(CO2) m-2 s-1 with a light-saturation point of 315.14 µmol(photon) m-2 s-1, light-compensation point of 40.25 µmol(photon) m-2 s-1, dark respiration rate of -0.57 µmol(CO2) m-2 s-1, and apparent quantum efficiency of 0.033. The use of a large custom built chamber proved to be successful and the data presented indicate that adequate mixing and sampling was achieved. This study is the first to document photosynthetic response of S. alta. The data from this study indicate that S. alata collected from our study site photosynthetically performed like that of a shade-adapted C3 plant and the measurements were consistent with those published for other species of Sarracenia.
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Claims 8
Claim · model-written summary
Light-saturated photosynthesis was 2.09 µmol(CO2) m-2 s-1.
- Taxon
- Sarracenia alata
Sarracenia alatat0 - Outcome
- light-saturated photosynthesise0
- Value
- 2.09 µmol(CO2) m-2 s-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“light-saturated photosynthesis was found to be 2.09 µmol(CO2) m-2 s-1”
t0“Sarracenia alata”
Claim · model-written summary
The light-saturation point was 315.14 µmol(photon) m-2 s-1.
- Taxon
- Sarracenia alataSarracenia alatat0
- Outcome
- light-saturation pointe0
- Value
- 315.14 µmol(photon) m-2 s-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“light-saturation point of 315.14 µmol(photon) m-2 s-1”
t0“Sarracenia alata”
Claim · model-written summary
The light-compensation point was 40.25 µmol(photon) m-2 s-1.
- Taxon
- Sarracenia alataSarracenia alatat0
- Outcome
- light-compensation pointe0
- Value
- 40.25 µmol(photon) m-2 s-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“light-compensation point of 40.25 µmol(photon) m-2 s-1”
t0“Sarracenia alata”
Claim · model-written summary
Dark respiration was -0.57 µmol(CO2) m-2 s-1.
- Taxon
- Sarracenia alataSarracenia alatat0
- Outcome
- dark respiration ratee0
- Value
- -0.57 µmol(CO2) m-2 s-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dark respiration rate of -0.57 µmol(CO2) m-2 s-1”
t0“Sarracenia alata”
Claim · model-written summary
Apparent quantum efficiency was 0.033.
- Taxon
- Sarracenia alataSarracenia alatat0
- Outcome
- apparent quantum efficiencye0
- Value
- 0.033e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“apparent quantum efficiency of 0.033”
t0“Sarracenia alata”
Claim · model-written summary
The large custom chamber achieved adequate mixing and sampling.
- Taxon
- Sarracenia alataSarracenia alatat0
- Outcome
- adequate mixing and samplinge0
- Comparator
- large custom built chambere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of a large custom built chamber proved to be successful and the data presented indicate that adequate mixing and sampling was achieved”
t0“Sarracenia alata”
Claim · model-written summary
S. alata photosynthesis resembled that of a shade-adapted C3 plant.
- Taxon
- S. alataSarracenia alatae0
- Outcome
- photosynthetically performed like that of a shade-adapted C3 plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. alata collected from our study site photosynthetically performed like that of a shade-adapted C3 plant”
Claim · model-written summary
S. alata measurements were consistent with published measurements of other Sarracenia species.
- Taxon
- Sarracenia alataSarracenia alatat0
- Outcome
- measurements were consistente0
- Comparator
- other species of Sarraceniae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the measurements were consistent with those published for other species of Sarracenia”
t0“Sarracenia alata”