Abstract
The abundance of mRNA specific for phosphoenolpyruvate carboxylase (PEPCase) was measured in leaves from well-watered plants of Mesembryanthemum crystallinum. Plants grown side by side in pots of four different volumes (0.16, 0.74, 2.6, 6.5 liters) were compared. The time of increase in the steady-state level of PEPCase mRNA in well-watered plants was dependent on soil volume. The larger the pot, the later PEPCase transcripts were increased. PEPCase mRNA induction started when shoot water content decreased to well below 4000% of dry weight. No positive correlation with the developmental status of the plants could be found. The data indicate that PEPCase mRNA induction in well-watered plants up to 10 weeks of age is controlled environmentally rather than developmentally.
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Claims 4
Claim · model-written summary
In well-watered plants, the time of increase in PEPCase mRNA depended on soil volume, and larger pots led to later increases.
- Taxon
- Mesembryanthemum crystallinum
Mesembryanthemum crystallinume0 - Treatment
- soil volumee1
- Outcome
- time of increase in the steady-state level of PEPCase mRNAe1
- Direction
- latere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The abundance of mRNA specific for phosphoenolpyruvate carboxylase (PEPCase) was measured in leaves from well-watered plants of Mesembryanthemum crystallinum”
e1“The time of increase in the steady-state level of PEPCase mRNA in well-watered plants was dependent on soil volume”
e2“The larger the pot, the later PEPCase transcripts were increased”
Claim · model-written summary
PEPCase mRNA induction started when shoot water content decreased to well below 4000% of dry weight.
- Taxon
- Mesembryanthemum crystallinumMesembryanthemum crystallinume0
- Gene
- PEPCasee3
- Outcome
- PEPCase mRNA inductione3
- Direction
- startede3
- Value
- 4000% of dry weighte3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The abundance of mRNA specific for phosphoenolpyruvate carboxylase (PEPCase) was measured in leaves from well-watered plants of Mesembryanthemum crystallinum”
e3“PEPCase mRNA induction started when shoot water content decreased to well below 4000% of dry weight”
Claim · model-written summary
No positive correlation was found between PEPCase mRNA induction and the developmental status of the plants.
- Taxon
- Mesembryanthemum crystallinumMesembryanthemum crystallinume0
- Treatment
- developmental status of the plantse4
- Outcome
- correlation with the developmental status of the plantse4
- Direction
- No positivee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The abundance of mRNA specific for phosphoenolpyruvate carboxylase (PEPCase) was measured in leaves from well-watered plants of Mesembryanthemum crystallinum”
e4“No positive correlation with the developmental status of the plants could be found”
Claim · model-written summary
PEPCase mRNA induction in well-watered plants up to 10 weeks of age is suggested to be controlled environmentally rather than developmentally.
- Taxon
- Mesembryanthemum crystallinumMesembryanthemum crystallinume0
- Outcome
- PEPCase mRNA inductione5
- Qualifier
- controlled environmentally rather than developmentallye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The abundance of mRNA specific for phosphoenolpyruvate carboxylase (PEPCase) was measured in leaves from well-watered plants of Mesembryanthemum crystallinum”
e5“The data indicate that PEPCase mRNA induction in well-watered plants up to 10 weeks of age is controlled environmentally rather than developmentally”