Abstract
Etiolated pea seedlings (5 days old) were treated with red light for 5 min and grown for 2 days more in darkness. Effects of the red light on the mRNA levels of two subunits of ribulose-1,5-bisphosphate carboxylase/oxygenase (EC 4.1.1.39) (ribulose-P2 carboxylase), rate of enzyme synthesis and accumulation of the enzyme were examined for the plants. Increases of the two mRNA levels, encoded in nuclei and chloroplasts were observed. Red light followed by far-red light treatment for 5 min inhibited the increases. An increase parallel with the mRNA levels was found for the rate of the enzyme synthesis and accumulation of the enzyme. These results indicate that the induction of two mRNA levels is mediated by phytochrome and causes the red-light-inducible, far-red-light-reversible increase of ribulose-P2 carboxylase. When white light was irradiated to induce the enzyme, the effects of red light given in darkness were reinforced. These results indicate that light-induction of ribulose-P2 carboxylase is mediated by phytochrome and controlled by the two mRNA levels.
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Claims 5
Claim · model-written summary
Red light increased the levels of the two mRNAs, nuclear- and chloroplast-encoded, in etiolated pea seedlings.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- red lighte0
- Outcome
- two mRNA levelse1
- Direction
- Increasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Etiolated pea seedlings (5 days old) were treated with red light for 5 min”
e1“Increases of the two mRNA levels, encoded in nuclei and chloroplasts were observed”
Claim · model-written summary
Far-red light after red light inhibited the increases in mRNA levels.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- Red light followed by far-red lighte1
- Outcome
- the increasese1
- Direction
- inhibitede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Etiolated pea seedlings (5 days old) were treated with red light for 5 min”
e1“Red light followed by far-red light treatment for 5 min inhibited the increases”
Claim · model-written summary
The rate of enzyme synthesis and the accumulation of the enzyme increased in parallel with the mRNA levels.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- red lighte0
- Outcome
- the rate of the enzyme synthesis and accumulation of the enzymee1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Etiolated pea seedlings (5 days old) were treated with red light for 5 min”
e1“An increase parallel with the mRNA levels was found for the rate of the enzyme synthesis and accumulation of the enzyme”
Claim · model-written summary
When white light was irradiated to induce the enzyme, the effects of red light given in darkness were reinforced.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- white lighte1
- Outcome
- the effects of red light given in darknesse1
- Direction
- reinforcede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Etiolated pea seedlings (5 days old) were treated with red light for 5 min”
e1“When white light was irradiated to induce the enzyme, the effects of red light given in darkness were reinforced”
Claim · model-written summary
Induction of the two mRNA levels is mediated by phytochrome and causes the red-light-inducible, far-red-light-reversible increase of ribulose-P2 carboxylase.
- Taxon
- peaLathyrus oleraceuse0
- Gene
- phytochromee1
- Outcome
- increase of ribulose-P2 carboxylasee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Etiolated pea seedlings (5 days old) were treated with red light for 5 min”
e1“the induction of two mRNA levels is mediated by phytochrome and causes the red-light-inducible, far-red-light-reversible increase of ribulose-P2 carboxylase”
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See all 27 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.