Abstract
Abstract— Photoreactivating enzyme (PRE) activity was measured in hypocotyls of Phaseolus vulgaris L. seedlings using a radioimmunoassay for thymine dimers. In dark‐grown seedlings a five‐fold increase in PRE activity was observed after 6 h of irradiation with blue or far‐red light. Short time irradiations with red light were also effective. Reversibility of this red‐light‐effect by a subsequent short term irradiation with far‐red light and also the high effectiveness of continuous far‐red light indicate that PRE activity is under phytochrome control. This observation points to PRE induction via gene activation.
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 6
Claim · model-written summary
Blue light produced a five-fold increase in PRE activity in dark-grown seedlings after 6 h.
- Taxon
- Phaseolus vulgaris L.
Phaseolus vulgarist0 - Treatment
- bluee0
- Gene
- PREe0
- Outcome
- PRE activitye0
- Direction
- increasee0
- Value
- five‐folde0
- Qualifier
- after 6 he0
- Comparator
- dark‐grown seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In dark‐grown seedlings a five‐fold increase in PRE activity was observed after 6 h of irradiation with blue or far‐red light”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Far-red light produced a five-fold increase in PRE activity in dark-grown seedlings after 6 h.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- far‐red lighte0
- Gene
- PREe0
- Outcome
- PRE activitye0
- Direction
- increasee0
- Value
- five‐folde0
- Qualifier
- after 6 he0
- Comparator
- dark‐grown seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In dark‐grown seedlings a five‐fold increase in PRE activity was observed after 6 h of irradiation with blue or far‐red light”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Brief red-light irradiation also raised PRE activity.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- red lighte0
- Outcome
- irradiations with red lighte0
- Direction
- effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Short time irradiations with red light were also effective”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Subsequent far-red light reversed the red-light effect on PRE activity.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- subsequent short term irradiation with far‐red lighte0
- Outcome
- Reversibilitye0
- Direction
- Reversibilitye0
- Comparator
- red‐light‐effecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reversibility of this red‐light‐effect by a subsequent short term irradiation with far‐red light”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
The light-response pattern indicates phytochrome control of PRE activity.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Gene
- phytochromee0
- Outcome
- PRE activitye0
- Qualifier
- phytochrome controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the high effectiveness of continuous far‐red light indicate that PRE activity is under phytochrome control”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
The authors infer PRE induction via gene activation.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Gene
- PREe0
- Outcome
- PRE inductione0
- Qualifier
- gene activatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This observation points to PRE induction via gene activation”
t0“Phaseolus vulgaris L.”
The same questions in other papers
light · physiology: enzyme activity · Phaseolus vulgaris (common bean)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- positive
3 papers more in this group
See all 7 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.