Abstract
Takeda, J. 1988. Light-induced synthesis of anthocyanin in carrot cells in suspension. I. The factors affecting anthocyanin production.—J. exp. Bot. 39: 1065–1077. A light-triggered anthocyanin-synthesizing system was established for carrot cells in suspension. A few days after transfer of the cells to a 2,4-dichlorophenoxyacetic acid (2,4-D)-free medium in the dark, light irradiation triggered anthocyanin synthesis and concomitantly stopped expansion growth. Over 90% of the cells synthesized anthocyanin without cell division. By lowering the concentration of phosphate or both nitrogen and phosphate and delaying the time of onset of irradiation, the production of anthocyanin per cell increased to a maximum level of 0–8 μmol anthocyanin per 106 cells. A change in the physiological state of cells (light-insensitive to light-sensitive state) induced by the transfer to 2,4-D-free medium is suggested to be a prerequisite for the light-triggered synthesis of anthocyanin.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
A light-triggered anthocyanin-synthesizing system was established in carrot suspension cells.
- Taxon
- carrot
Daucus carotae0 - Organ / stage
- cells in suspensione0
- Outcome
- light-triggered anthocyanin-synthesizing systeme0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A light-triggered anthocyanin-synthesizing system was established for carrot cells in suspension.”
Claim · model-written summary
Light irradiation triggered anthocyanin synthesis after transfer to 2,4-D-free medium.
- Taxon
- CarrotDaucus carotat0
- Organ / stage
- cellse0
- Treatment
- light irradiatione0
- Outcome
- anthocyanin synthesise0
- Direction
- triggerede0
- Qualifier
- 2,4-dichlorophenoxyacetic acid (2,4-D)-free mediume0
- Comparator
- darke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A few days after transfer of the cells to a 2,4-dichlorophenoxyacetic acid (2,4-D)-free medium in the dark, light irradiation triggered anthocyanin synthesis and concomitantly stopped expansion growth.”
t0“Carrot Cells”
Claim · model-written summary
Light irradiation stopped expansion growth after transfer to 2,4-D-free medium.
- Taxon
- CarrotDaucus carotat0
- Organ / stage
- cellse0
- Treatment
- light irradiatione0
- Outcome
- expansion growthe0
- Direction
- stoppede0
- Comparator
- darke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A few days after transfer of the cells to a 2,4-dichlorophenoxyacetic acid (2,4-D)-free medium in the dark, light irradiation triggered anthocyanin synthesis and concomitantly stopped expansion growth.”
t0“Carrot Cells”
Claim · model-written summary
More than 90% of cells synthesized anthocyanin without division.
- Taxon
- CarrotDaucus carotat0
- Outcome
- cells synthesized anthocyanin without cell divisione0
- Value
- Over 90%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Over 90% of the cells synthesized anthocyanin without cell division.”
t0“Carrot Cells”
Claim · model-written summary
Lower phosphate and delayed irradiation increased anthocyanin production per cell to the reported maximum.
- Taxon
- CarrotDaucus carotat0
- Treatment
- lowering the concentration of phosphatee0
- Outcome
- production of anthocyanin per celle0
- Direction
- increasede0
- Value
- 0–8 μmol anthocyanin per 106 cellse0
- Qualifier
- delaying the time of onset of irradiatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By lowering the concentration of phosphate or both nitrogen and phosphate and delaying the time of onset of irradiation, the production of anthocyanin per cell increased to a maximum level of 0–8 μmol anthocyanin per 106 cells.”
t0“Carrot Cells”
Claim · model-written summary
Lower nitrogen and phosphate with delayed irradiation increased anthocyanin production per cell to the reported maximum.
- Taxon
- CarrotDaucus carotat0
- Treatment
- both nitrogen and phosphatee0
- Outcome
- production of anthocyanin per celle0
- Direction
- increasede0
- Value
- 0–8 μmol anthocyanin per 106 cellse0
- Qualifier
- delaying the time of onset of irradiatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By lowering the concentration of phosphate or both nitrogen and phosphate and delaying the time of onset of irradiation, the production of anthocyanin per cell increased to a maximum level of 0–8 μmol anthocyanin per 106 cells.”
t0“Carrot Cells”
Claim · model-written summary
Transfer to 2,4-D-free medium may induce light sensitivity needed for light-triggered anthocyanin synthesis.
- Taxon
- CarrotDaucus carotat0
- Treatment
- transfer to 2,4-D-free mediume0
- Outcome
- light-triggered synthesis of anthocyanine0
- Qualifier
- light-insensitive to light-sensitive statee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A change in the physiological state of cells (light-insensitive to light-sensitive state) induced by the transfer to 2,4-D-free medium is suggested to be a prerequisite for the light-triggered synthesis of anthocyanin.”
t0“Carrot Cells”
The same questions in other papers
radiation · quality: phytochemicals · Daucus carota (carrot)Positive and negative results
1 in the opposite direction
- no effect
light · quality: phytochemicals · Daucus carota (carrot)Results agree
1 paper in the same direction as this paper
- positive
phosphorus · quality: phytochemicals · Daucus carota (carrot)Results agree
1 paper in the same direction as this paper
- positive
nitrogen · quality: phytochemicals · Daucus carota (carrot)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.